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Steve's Power Toys

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Steve Spence

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Jan 5, 2005, 12:16:27 PM1/5/05
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Steve's Power Toys

Here are a few of my toys I use in our off grid home.

Starting with the NiMH battery Charger, it holds 4 AA or AAA NiMH
batteries, and charges from 120vac or 12vdc native. About $20 from
Walmart, and came with 4 AA NiMH batteries.

Next is my Kill-A-Watt, a 120vac, 15amp, monitor for volts, amps, watts,
hz, watt hours, power factor, etc. indispensable in an off grid home for
determining how much power an item uses and for how long it runs. $30
from J&R Music World.

The last item in the picture is my new Power Center, $99 from BJ's
Wholesale. It contains a battery, a 400 watt inverter, jumper cables,
air compressor, flashlight, two 12vdc power receptacles, and two 120vac
receptacles. Great for portable, emergency power, or, as we are using
it, as a temporary UPS to keep the satellite box from losing sync and
the clock radio/stereo from losing programming during
inverter/generator/inverter switching. We will plug a 20 watt PV panel
into it shortly, and give some real life run time/load numbers.

See more at http://www.off-grid.net

George Ghio

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Jan 6, 2005, 6:57:29 AM1/6/05
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In article <LhVCd.123215$Uf.8...@twister.nyroc.rr.com>,
Steve Spence <spe...@green-trust.org> wrote:

Well you got the title right, Toys

Steve Spence

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Jan 6, 2005, 11:57:21 AM1/6/05
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Still not learning, are you george?

1. battery charger - you advocate buying non-rechargeable so the
landfill has more trash? Might ungreen of a "solar consultant" if I may
say so.

2. Kill-A-Watt - A common tool used by real solar consultants to show
end users how much enrgy their equipment consumes.

3. Jump start pack - Nice jump starter, air compressor, and portable
ac/dc power pack. Handy thing to have around when a tire is flat, the
battery is dead, or I need to use my handheld drill outside the house.

"Toys" are useful, hence my reason for having them. You aren't, so I
don't. I hope some day you'll grow up to be a real solar consultant, not
just a net troll.

Steve Spence
Dir., Green Trust
http://www.green-trust.org

DJ

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Jan 6, 2005, 1:30:56 PM1/6/05
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While rechargable batteries are the most expensive type of energy, I
seem to have read recently, I do certainly have a mess of them around.
Mostly for power tools, but yeah, around. I sleep well at night,
though, knowing that they're either charged with my solar panels (which
I haven't heard a peep from in months, by the way, due to the pitiful
sunlight) or my wind mill.

As per kill-a-watts, I bought a case of them a while ago direct from
P3, and sold some, but use, as Steve suggests, a good half-dozen or
more when we do a house power consumption audit for a client. They're
great for getting *actual* totals for power hogs, like entertainment
centers, because for some reason, clients tend to seriously
underestimate their useage (especially TV viewing ;-) as well as for
getting real time weighted numbers on fridges and freezers. Plug 'em
in, leave 'em for a week, go back and record it. Very handy little
"toy".

As per building a mobile power center, always a good idea. Inverters
fail. Fuses blow. Having a fall-back is always nice to keep the glycol
heating pumps running, or powering the satellite to call/email out.
Sometimes, just a little power is all you *really* need in a pinch,
until you get the rest of it sorted out.
With a solar panel on it, it resembles the system, actually, I have on
my workshop for light and minor tools. Too far to run cable from the
house, so I built a cheapie "stand-alone".
To each their own, though, I guess!

DJ

George Ghio

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Jan 6, 2005, 6:44:57 PM1/6/05
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In article <R5eDd.129149$Uf.1...@twister.nyroc.rr.com>,
Steve Spence <spe...@green-trust.org> wrote:

Where do your "re-chargeables" end up at the end of their life. I use
small regulated power supplies.


>
> 2. Kill-A-Watt - A common tool used by real solar consultants to show
> end users how much enrgy their equipment consumes.

Must work really well. Maybe almost as well as my clamp meter.

>
> 3. Jump start pack - Nice jump starter, air compressor, and portable
> ac/dc power pack. Handy thing to have around when a tire is flat, the
> battery is dead, or I need to use my handheld drill outside the house.

Funny thing. My compressor (12V) works just fine. As does my maines
powered one. If I need a drill outside I can 1) plug it into the house
system(12V) 2) plug it into the car, truck or tractor electrical
systems. 3) Flat battery, just plug it into the system, no worries.


>
> "Toys" are useful, hence my reason for having them. You aren't, so I
> don't. I hope some day you'll grow up to be a real solar consultant, not
> just a net troll.

The thing is that YOU called them toys. This shows your mind set. You
bought them to play with and impress people.

I buy tools.

David Dillion

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Jan 6, 2005, 11:46:35 PM1/6/05
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George what is the URL for your "I hate Steve Spence" website?

Do you pass constructive meaningful comment?

What is the URL for your website?


daviddillion at postmaster co uk

"George Ghio" <gh...@netconnect.com.au> wrote in message
news:ghio-7FB181.2...@news.chariot.net.au...
> In article <LhVCd.123215$Uf.8...@twister.nyroc.rr.com>,

George Ghio

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Jan 7, 2005, 6:52:10 AM1/7/05
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Don't hate Steve at all. He just comes out with some silly statements at
times.

"Toys" is a good example.

His NiMH battery charger. $20 + batteries. He has 12V right there, said
so himself. For around $5 he could have a regulated power supply.

Kill-a-watt meter. Nice if you want to whip it out at parties so you can
say "Hey have a look at this, you won't believe what it will do.

But if you want to know how much the field on your 12 V alt is pulling
or what the inverter is pulling right now... Well.

Now DJ knows the value of tools and applies them.

And the power center, jeez I had all that stuff years ago. All as
discreet units. He bought it because he can't help himself, loves
gadgets. Does six things, none of them well. But he gets a buzz showing
off his toys.

So the title was a good choice


In article <LuoDd.107704$K7.2...@news-server.bigpond.net.au>,

nicks...@ece.villanova.edu

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Jan 7, 2005, 8:24:19 AM1/7/05
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George Ghio <gh...@netconnect.com.au> wrote:

> Steve Spence <spe...@green-trust.org> wrote:
>
>> Still not learning, are you george?...



>> 2. Kill-A-Watt - A common tool used by real solar consultants to show
>> end users how much enrgy their equipment consumes.
>
>Must work really well. Maybe almost as well as my clamp meter.

You can't measure power with a "clamp meter," George.

(Unless you measure resistors in amps, and so on :-)

Nick

wmbjk

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Jan 7, 2005, 8:41:32 AM1/7/05
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On Thu, 06 Jan 2005 16:57:21 GMT, Steve Spence
<spe...@green-trust.org> wrote:

> I hope some day you'll grow up to be a real solar consultant, not
>just a net troll.

The dividing line between a 400W inverter being a "toy", or being a
critical part of a custom home's "system", is apparently so fine that
one must be a "solar power consultant" to see it. :-)

Wayne

wmbjk

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Jan 7, 2005, 8:45:08 AM1/7/05
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On Fri, 07 Jan 2005 10:44:57 +1100, George Ghio
<gh...@netconnect.com.au> wrote:

>In article <R5eDd.129149$Uf.1...@twister.nyroc.rr.com>,
> Steve Spence <spe...@green-trust.org> wrote:

>> 2. Kill-A-Watt - A common tool used by real solar consultants to show
>> end users how much enrgy their equipment consumes.
>
>Must work really well. Maybe almost as well as my clamp meter.

When a device like a Kill-a-Watt meter is needed (for appliances whose
load changes over time, such as clothes washers, dish washers,
computers, etc.), a clamp meter is a tedious and highly ineffective
substitute. Making such a substitution is pointless anyway when the
proper tool costs so little. Not to mention the embarrassment of
getting caught pretending to be a professional for not only doing
without such a basic tool, but scoffing at others for having one.

Wayne

wmbjk

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Jan 7, 2005, 8:47:11 AM1/7/05
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On Fri, 07 Jan 2005 22:52:10 +1100, George Ghio
<gh...@netconnect.com.au> wrote:


>Now DJ knows the value of tools and applies them.

Yes, which is why he bought a case of Kill-a-Watts, and makes
effective use of them. He disagreed with your whole "toy" line of
reasoning, so what was your point again?

Wayne

daestrom

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Jan 7, 2005, 9:09:06 AM1/7/05
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<nicks...@ece.villanova.edu> wrote in message
news:crm2i3$h...@acadia.ece.villanova.edu...

Not true Nick. Some clamp-on ammeters come with two leads as well as the
clamping ring. You clamp the ring around one line, and attach the two leads
across the line for a voltage reading. Twist the selector knob and voila!,
a scale that shows watts based on the current sensed in the clamp, and the
voltage applied across the leads.

Great if you have exposed wiring, but the Kill-A-Watt is much easier for
plug-in appliances and such. Also provides a lot more information (includes
timer, kwh, freq. and more...)

daestrom


Steve Spence

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Jan 7, 2005, 9:10:18 AM1/7/05
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Steve Spence
Dir., Green Trust
http://www.green-trust.org

George Ghio wrote:
> Don't hate Steve at all. He just comes out with some silly statements at
> times.

Not oo often, but it happens. This wasn't one of those times.

>
> "Toys" is a good example.
>
> His NiMH battery charger. $20 + batteries. He has 12V right there, said
> so himself. For around $5 he could have a regulated power supply.

That regulated power supply won't work real conveniently with my digital
camera, or my son's xmods.

>
> Kill-a-watt meter. Nice if you want to whip it out at parties so you can
> say "Hey have a look at this, you won't believe what it will do.

Do you have a clue how useful this tool is? When a customer wants to
know how much a microwave draws, and how often they use it in a week,
what would you use? I bet you guess .....


>
> But if you want to know how much the field on your 12 V alt is pulling
> or what the inverter is pulling right now... Well.

I have a digital multimeter for that. This is for testing 120vac loads
over time, and the frequency setting is nice for tuning the governor on
the generator.

>
> Now DJ knows the value of tools and applies them.
>
> And the power center, jeez I had all that stuff years ago. All as
> discreet units. He bought it because he can't help himself, loves
> gadgets. Does six things, none of them well. But he gets a buzz showing
> off his toys.

Having it all in one box is convenient for the uses I need it for.

>
> So the title was a good choice

Toys are still useful. I have a friend who is a contractor. refers to
his tools as his "toys". Nothing toylike about a $300 router, but it's
his "toy".

daestrom

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Jan 7, 2005, 9:10:40 AM1/7/05
to

"George Ghio" <gh...@netconnect.com.au> wrote in message
news:ghio-0D0C01.1...@news.chariot.net.au...

> In article <R5eDd.129149$Uf.1...@twister.nyroc.rr.com>,
> Steve Spence <spe...@green-trust.org> wrote:
>
>> Still not learning, are you george?
>>
>> 1. battery charger - you advocate buying non-rechargeable so the
>> landfill has more trash? Might ungreen of a "solar consultant" if I may
>> say so.
>
> Where do your "re-chargeables" end up at the end of their life. I use
> small regulated power supplies.
>>
>> 2. Kill-A-Watt - A common tool used by real solar consultants to show
>> end users how much enrgy their equipment consumes.
>
> Must work really well. Maybe almost as well as my clamp meter.

Does you clamp meter include a timer so it can integrate the instantaneous
power over time and display the actual energy used in kwh??

daestrom


DJ

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Jan 7, 2005, 9:51:55 AM1/7/05
to
>When a device like a Kill-a-Watt meter is needed (for appliances whose
load changes over time, such as clothes washers, dish washers,
computers, etc.), a clamp meter is a tedious and highly ineffective
substitute.

You can get "clamp on" versions that do data logging, though! Briefcase
things. Was pricing them the other day, so I could do "time weighted"
on bigger stuff, mostly 220, for tracking folks bigger draws, like AC
water pumps. Those puppies, though, are SERIOUS toys, well over a
grand. Don't want to be leaving one of those in somebody's pumphouse
for a weekend ;-). Gonna have to crack open/splice together a couple of
KaWs, see if I can't cobble something together for 220. Anybody else
try it? Haven't given it much thought yet, but instinctively, you'd
think it would work with a bit of effort.

> Making such a substitution is pointless anyway when the
proper tool costs so little.

I'd doubt you could make one that does so much for so little; that's
the kicker. And they can be used for some pretty interesting
applications, Kill-A-Watts. One that I use myself is to track how many
kilowatts I "buy" from my genny, for curiosity sake. You can plug them
into a genny's output to tune Hz (ballpark), and, of course, all the
normal stuff like actual instantaneous amp and wattage draw.
One thing that's fun, though, is to take a look at the manufacturer's
page, P3International.com, I think. They make ALOT of amusing toys.

>Where do your "re-chargeables" end up at the end of their life. I use
small regulated power supplies.

Yeah, I hate that myself. Living in an off-grid home, though, you end
up with alot of them lying around. Ones in the smoke detector, CO
detector (friggin' think takes 9v *AC* from the wart), flashlights,
stuff like that. I have stopped just "pitchin' them", and drop them off
at recycle places. But yep, slowly but surely, I'll be getting as much,
atleast INSIDE the house, switched into the battery supply. Outside the
house, though, is trickier! Hunting and hiking, we got radios, GPSs,
stuff like that, that positively inhales AA batteries. Ah well. What's
life without challenges, eh?

> The thing is that YOU called them toys. This shows your mind set. You
bought them to play with and impress people. I buy tools.

Not directed at me, but I'm as guilty as Steve. I've got a whole
shopful of toys ;-). Truly, though, when you get to a point in your
life that you're doing for money what you like to do for a hobby, the
line between toys and tools gets a little blurry. If it's *fun* wiring
up a windmill, doesn't that make the 200$ multimeter you're using "a
toy"? ;-).
I also violate another cardinal "not a toy" rule, doing long-range
target shooting. VERY fun. Doesn't that turn a rifle into a "toy"?
Serious toy, and one you rarely let others "play" with, and are VERY
careful with, but like, say, a racing car a friend of mine has for the
local mod track... toy?

> I have a digital multimeter for that. This is for testing 120vac
loads
over time, and the frequency setting is nice for tuning the governor on
the generator.

Yep, works good for that. My only complaint is that it doesn't update
fast enough to accurately tune a genny to feed something like a OutBack
*Grid Tie* FX for battery charging. VERY picky on what they'll take,
those inverters. The regular VFX or FXs, though, are GREAT! I love
mine. It's an issue of Grid Tie requirements, OutBack tells me, that
they're so picky; it has to disconnect at the mere hint of grid
instability, and the genny input is the same blocks as the grid input.

> Having it all in one box is convenient for the uses I need it for.

True, grabbing an inverter, a couple of batteries, some cables and
whatnot, throwing it into the back of the truck is fine for personal
use. But for a client who's sitting in the dark while you fix the main
setup... it's nice to just wheel something over and plug into it. I
myself, as George would say, build them from components, but really,
probably can't match the BJ price. Battery, 50$? Inverter, 50$? Air
Compressor, 20$ Then the DC disconnect, fuse, cables, outlets, hard
pressed to make THAT work. You're right, of course, George, it's not a
"serious" power center, but something you can limp with until the real
one is running again.
My only real dislike of those "power boxes" is that when a client sees
THAT for 100$, sometimes it's a hard go, explaining what an OutBack
PowerBoard, for instance, costs , and why ;-).

>Toys are still useful. I have a friend who is a contractor. refers to
his tools as his "toys".

Now you have atleast two ;-).

Yep, throwing a little morningstar charge controller and a 75 watt
panel would be a really cool upgrade for that. Maybe strap the whole
thing to a 2-wheel dolly?

DJ

Steve Spence

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Jan 7, 2005, 11:12:30 AM1/7/05
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DJ wrote:
>
> Yep, throwing a little morningstar charge controller and a 75 watt
> panel would be a really cool upgrade for that. Maybe strap the whole
> thing to a 2-wheel dolly?
>
> DJ
>

and an bigger battery, like the 115ah, 27 series deepcycle at walmart
for $53. Or maybe just build one from components ( I have one of those,
too) since you have the dolly for transport.

Steve Spence

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Jan 7, 2005, 11:14:22 AM1/7/05
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daestrom wrote:
> "George Ghio" <gh...@netconnect.com.au> wrote in message
> news:ghio-0D0C01.1...@news.chariot.net.au...

>>Must work really well. Maybe almost as well as my clamp meter.


>
>
> Does you clamp meter include a timer so it can integrate the instantaneous
> power over time and display the actual energy used in kwh??
>
> daestrom
>

ah, come on, you know he'll say yes, now that you've given him the
answer ....

That sounds like a nice "toy"!

Philip Lewis

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Jan 7, 2005, 1:59:52 PM1/7/05
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"DJ" <dj_mac...@hotmail.com> writes:
>for a weekend ;-). Gonna have to crack open/splice together a couple of
>KaWs, see if I can't cobble something together for 220. Anybody else
hmmm... for smaller loads (10A/240V) you might be able to use a
120->240 transformer. Plug the 120 side of the transformer into the
KaW, and wire a 240V receptacle to the 240 side.

just a thought.

--
be safe.
flip
Ich habe keine Ahnung was das bedeutet, oder vielleicht doch?
Remove origin of the word spam from address to reply (leave "+")


Steve Spence

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Jan 7, 2005, 2:16:18 PM1/7/05
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I don't see a problem using 2 KAW's, as long as the load isn't more than
15 amps per leg. Using the transformer idea would work as well if the
load was less than 7amp. Just have to do some math with the readings.

Steve Spence
Dir., Green Trust
http://www.green-trust.org

DJ

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Jan 7, 2005, 2:29:55 PM1/7/05
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Kill-A-Watts are rated for 15 amps, as I remember. I'm just wondering
if you could make a "plug adapter" that would take both of the "hot"
sides of two KaWs, input and output... hmm. Beginning to get cumbersome
and intrusive, huh?
It might just be easier using some sort of data logger that was
triggered by a little solid state relay you could clip in parallel on
the 220, that just counted time (even an analog clock, say). When the
circuit was live, the relay would close, the clock would run. Then just
checking instantaneous draw (V and A), and doing some math, you'd have
what you needed. A digital clock wouldn't be a great choice, though
;-).

DJ

wmbjk

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Jan 7, 2005, 3:28:11 PM1/7/05
to
On Fri, 07 Jan 2005 14:10:18 GMT, Steve Spence
<spe...@green-trust.org> wrote:


>Do you have a clue how useful this tool is?

Not anymore apparently, but check the archives... about a year ago we
had this same discussion about the usefulness and affordability of
Kill-a-Watt, Wattsup, etc. George started out arguing that his
breakout box method was just as good, but changed his tune eventually.
How did he forget so quickly? My guess is that tiny marsupials sneak
into his room each night and steal portions of his mind. Perhaps
they're stocking the pieces to build a very tiny but scary DMV droid.
:-)

Wayne

wmbjk

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Jan 7, 2005, 3:30:04 PM1/7/05
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On 7 Jan 2005 06:51:55 -0800, "DJ" <dj_mac...@hotmail.com> wrote:

> Outside the
>house, though, is trickier! Hunting and hiking, we got radios, GPSs,
>stuff like that,

Oh oh, now you've done it. I bet we're going to get a lecture on how
it's preferable to communicate using a digideroo, and find direction
by checking which side of the kangaroo the moss is growing on. :-)

Reminds me... I just saw the Garmin Geko on sale for $49.
http://www.techbargains.com/tellafriend2.cfm?news_id=38465

Wayne

Gymy Bob

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Jan 7, 2005, 10:16:00 PM1/7/05
to
Geeeez. You guys in the dark ages? What is wrong with a recording, clamp-on
wattmeter with a kWh register on it and maybe even WiFi or USB talk to your
PC? Some appliances are 240V and some do not have 15A recepticals to plug
this toy into. I have a kill-a-watt also but the uses are limited to small
appliances.

"wmbjk" <wmbjk@REMOVE_THIScitlink.net> wrote in message
news:3h4tt05df9nq19hpf...@4ax.com...

Gymy Bob

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Jan 7, 2005, 10:20:44 PM1/7/05
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Here is a guy that only has "serious tools" at his disposal. He has never
"played" with his tools because he is professional. This is the kind of guy
that only knows what is in the manual and nothing more, assuming he has read
over half of some of them.

I wouldn't hire him. I want somebody knowledgeable, that has laid in bed at
night punching the buttons on his toys to see what they can do. I guess I
want a "hacker" and not a professional with a suit and tie on.


"wmbjk" <wmbjk@REMOVE_THIScitlink.net> wrote in message

news:4k4tt0dvek1bjo4uk...@4ax.com...

Landline

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Jan 7, 2005, 10:26:22 PM1/7/05
to
It really is all pretty damn simple - the guy with the most toys wins


"wmbjk" <wmbjk@REMOVE_THIScitlink.net> wrote in message

news:tvrtt01v76uojlesd...@4ax.com...

Larry Lix

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Jan 7, 2005, 10:38:56 PM1/7/05
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How are those Wally mart batteries? I been thinking of getting a 48V set of
them myself soon.

"Steve Spence" <spe...@green-trust.org> wrote in message
news:OxyDd.129269$Uf.1...@twister.nyroc.rr.com...

George Ghio

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Jan 7, 2005, 11:29:53 PM1/7/05
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Nope that does not make two days autonomy either. Try again.

In article <u6stt0lobgvn5qhon...@4ax.com>,

George Ghio

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Jan 7, 2005, 11:28:37 PM1/7/05
to
In article <tvrtt01v76uojlesd...@4ax.com>,
wmbjk <wmbjk@REMOVE_THIScitlink.net> wrote:

Nope that does not make two days autonomy either. Try again.

George Ghio

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Jan 7, 2005, 11:31:10 PM1/7/05
to
In article <4k4tt0dvek1bjo4uk...@4ax.com>,
wmbjk <wmbjk@REMOVE_THIScitlink.net> wrote:

Nope that does not make two days autonomy either. Try again.

George Ghio

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Jan 7, 2005, 11:31:50 PM1/7/05
to
In article <ib4tt05tgrl7rf59g...@4ax.com>,
wmbjk <wmbjk@REMOVE_THIScitlink.net> wrote:

Nope that does not make two days autonomy either. Try again.

You can't do it can you

George Ghio

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Jan 7, 2005, 11:32:44 PM1/7/05
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In article <ALwDd.129260$Uf....@twister.nyroc.rr.com>,
"daestrom" <daestrom@NO_SPAM_HEREtwcny.rr.com> wrote:

Did I claim that?

George Ghio

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Jan 7, 2005, 11:33:47 PM1/7/05
to
In article <3h4tt05df9nq19hpf...@4ax.com>,
wmbjk <wmbjk@REMOVE_THIScitlink.net> wrote:

Nope that does not make two days autonomy either. Try again.

George Ghio

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Jan 8, 2005, 4:01:38 AM1/8/05
to
In article <eLwDd.9792$Xs6....@twister.nyroc.rr.com>,
Steve Spence <spe...@green-trust.org> wrote:

> Steve Spence
> Dir., Green Trust
> http://www.green-trust.org
>
> George Ghio wrote:
> > Don't hate Steve at all. He just comes out with some silly statements at
> > times.
>
> Not oo often, but it happens. This wasn't one of those times.
>
> >
> > "Toys" is a good example.
> >
> > His NiMH battery charger. $20 + batteries. He has 12V right there, said
> > so himself. For around $5 he could have a regulated power supply.
>
> That regulated power supply won't work real conveniently with my digital
> camera, or my son's xmods.

So


>
> >
> > Kill-a-watt meter. Nice if you want to whip it out at parties so you can
> > say "Hey have a look at this, you won't believe what it will do.
>
> Do you have a clue how useful this tool is? When a customer wants to
> know how much a microwave draws, and how often they use it in a week,
> what would you use? I bet you guess .....

As it turnes out, Yes. But it amazes me that you need it to count how
many times the MW is used.


> >
> > But if you want to know how much the field on your 12 V alt is pulling
> > or what the inverter is pulling right now... Well.
>
> I have a digital multimeter for that. This is for testing 120vac loads
> over time, and the frequency setting is nice for tuning the governor on
> the generator.

So you have a MM that will measure a few hundred amps and does not
measure Freq. Biz


>
> >
> > Now DJ knows the value of tools and applies them.
> >
> > And the power center, jeez I had all that stuff years ago. All as
> > discreet units. He bought it because he can't help himself, loves
> > gadgets. Does six things, none of them well. But he gets a buzz showing
> > off his toys.
>
> Having it all in one box is convenient for the uses I need it for.

Looks flash when you show it off, eh.

George Ghio

unread,
Jan 8, 2005, 4:05:21 AM1/8/05
to
Nope that does not make two days autonomy either. Try again.

In article <3h4tt05df9nq19hpf...@4ax.com>,
wmbjk <wmbjk@REMOVE_THIScitlink.net> wrote:

wmbjk

unread,
Jan 8, 2005, 8:45:37 AM1/8/05
to
On Sat, 08 Jan 2005 20:01:38 +1100, George Ghio
<gh...@netconnect.com.au> wrote:

>In article <eLwDd.9792$Xs6....@twister.nyroc.rr.com>,
> Steve Spence <spe...@green-trust.org> wrote:

>> Do you have a clue how useful this tool is?

>As it turnes out, Yes.

Then why did you call it a toy? And why do you feel the need to find
something wrong with owning and using one?

>> Having it all in one box is convenient for the uses I need it for.

>Looks flash when you show it off, eh.

You might explain exactly how *you'd* measure the energy consumption
of a dishwasher *without* using something like a Kill-a-Watt. Let me
guess... the "professional" and convenient breakout box/clamp-on
meter/stopwatch/pen and paper/sit and wait/calculator method? That
would look flash when you show it off... until your customer finds out
that you only do it that way because you're too pigheaded to spend $25
for a the proper tool (http://tinyurl.com/47o95), or $5 for a surplus
house meter. But we shouldn't discount the most likely possibility -
that you've never measured the energy consumption of a dishwasher.

Wayne

George Ghio

unread,
Jan 8, 2005, 9:46:34 AM1/8/05
to
Nope! Still does not equal two days autonomy.

And you with nine years of data and a Kill A Watt.

Back on your moped Wayne. The Jons are waiting.


In article <2fnvt09qgrgedbrev...@4ax.com>,
wmbjk <wmbjk@REMOVE_THIScitlink.net> wrote:

> On Sat, 08 Jan 2005 20:01:38 +1100, George Ghio
> <gh...@netconnect.com.au> wrote:
>
> >In article <eLwDd.9792$Xs6....@twister.nyroc.rr.com>,
> > Steve Spence <spe...@green-trust.org> wrote:
>
> >> Do you have a clue how useful this tool is?
>
> >As it turnes out, Yes.
>
> Then why did you call it a toy? And why do you feel the need to find
> something wrong with owning and using one?

I didn't. Steve did.

DJ

unread,
Jan 8, 2005, 10:47:58 AM1/8/05
to
We're not talking about me, here, right, Gymy? While it's true, my
training does make me read the manuals (and often write notes in the
margins), I absolutely push every button it has to see "hmm, and what
does THIS do if I do THAT?"

Nope, to quote Calvin, talking to Hobbes about his 'messy' coloring
book, "yeah, but if I color INSIDE the lines, I get the picture THEY
want!"

DJ

Gymy Bob

unread,
Jan 8, 2005, 10:58:33 AM1/8/05
to
If you treat your equipment as a toy and investigate every aspect and weird
quirk because you are fascinated with what it can do, then "YES" I am
talking about you in the latter half (I think?). This is what makes a
hacker/professional or whatever you want to call yourself. Knowing your
equipment becaue you have "played with it" makes you a valuble player in the
tech game.

I work with many of the "professional" electricians, engineers, managers and
the rest of the ilk that don't have the time of day to experiment and as far
as I am concerned they can stay away from my projects. Sometimes it is an
ego boost to have these so-called "professionals" come and beg for
information because they can't our toys do what the good guys can but I
would never hire them given a choice.

Was that clear enough for ya'?...LOL


"DJ" <dj_mac...@hotmail.com> wrote in message
news:1105199278.6...@c13g2000cwb.googlegroups.com...

Gymy Bob

unread,
Jan 8, 2005, 10:59:20 AM1/8/05
to
Your digital memory is stuck in an analogue loop like a grammaphone.

"George Ghio" <gh...@netconnect.com.au> wrote in message

news:ghio-57A759.1...@news.chariot.net.au...

Gymy Bob

unread,
Jan 8, 2005, 11:02:56 AM1/8/05
to
Why don't one of you experts, that mouth off tell me how you use a
Kill-a-Watt unit to measure the load of a dishwasher when 99% of them are
all wired into the circuit?


"wmbjk" <wmbjk@REMOVE_THIScitlink.net> wrote in message

news:2fnvt09qgrgedbrev...@4ax.com...

Anthony Matonak

unread,
Jan 8, 2005, 11:51:32 AM1/8/05
to
Gymy Bob wrote:
...

> Why don't one of you experts, that mouth off tell me how you use a
> Kill-a-Watt unit to measure the load of a dishwasher when 99% of them are
> all wired into the circuit?

Really? How odd. Most of the new installations I've seen all have
an outlet under there somewhere that the dishwasher plugs into.
I guess different places do things differently.

In any case, there are always going to be some loads you can't
conveniently measure. Lucky for us the power company provides a
meter that measures everything. Once you've measured all the
stuff that you easily can then you just need to subtract those
totals from the power meter readings and that will tell you what
everything else uses.

Anthony

Me

unread,
Jan 8, 2005, 3:07:34 PM1/8/05
to
In article <6eBDd.9820$Xs6....@twister.nyroc.rr.com>,
Steve Spence <spe...@green-trust.org> wrote:

> I don't see a problem using 2 KAW's, as long as the load isn't more than
> 15 amps per leg. Using the transformer idea would work as well if the
> load was less than 7amp. Just have to do some math with the readings.
>
> Steve Spence
> Dir., Green Trust
> http://www.green-trust.org

and deduct the loss of the transformer...........

Me

daestrom

unread,
Jan 8, 2005, 3:15:11 PM1/8/05
to

"George Ghio" <gh...@netconnect.com.au> wrote in message
news:ghio-861A86.1...@news.chariot.net.au...

No, but that is an integral feature of the 'Kill-A-Watt'. Makes it easy to
determine the energy usage of all sorts of intermittent duty appliances. So
I don't have to guesstimate the number of hours an appliance runs each
month.

For example, left my PC power strip plugged in through it for two months to
find my 'average' PC energy usage. About 33 kwh.

daestrom


m II

unread,
Jan 8, 2005, 3:44:39 PM1/8/05
to
Philip Lewis wrote:

> hmmm... for smaller loads (10A/240V) you might be able to use a
> 120->240 transformer. Plug the 120 side of the transformer into the
> KaW, and wire a 240V receptacle to the 240 side.


You may want to draw that out on piece of paper. Keep in mind that the meter
has to read voltage, current and power factor.

This may prove to be a bit harder than a first look tells you.

mike

Vaughn

unread,
Jan 8, 2005, 4:35:00 PM1/8/05
to

"m II" <C...@In.The.Hat> wrote in message news:XCXDd.4876$06.2987@clgrps12...

Why? It sounds pretty simple to me. That said, I am not in love with the
idea. The disadvantages would be: 1) The losses of the transformer would result
in reduced accuracy (you would always get a somewhat high reading), 2) the
transformer will probably change the power factor somewhat and, 3) obtaining and
transporting a heavy/expensive transformer.

Another way *might* be to wire an adapter and use the KaW on just one half
of the line, then multiply the measured power by two. This idea will
(naturally) only work with a balanced load (I think you will find that most 220
loads are balanced.)

Vaughn

>
>
>
>
>
> mike


wmbjk

unread,
Jan 8, 2005, 6:21:49 PM1/8/05
to
On Sun, 09 Jan 2005 01:46:34 +1100, George Ghio
<gh...@netconnect.com.au> wrote:

>In article <2fnvt09qgrgedbrev...@4ax.com>,
> wmbjk <wmbjk@REMOVE_THIScitlink.net> wrote:
>
>> On Sat, 08 Jan 2005 20:01:38 +1100, George Ghio
>> <gh...@netconnect.com.au> wrote:
>>
>> >In article <eLwDd.9792$Xs6....@twister.nyroc.rr.com>,
>> > Steve Spence <spe...@green-trust.org> wrote:
>>
>> >> Do you have a clue how useful this tool is?
>>
>> >As it turnes out, Yes.
>>
>> Then why did you call it a toy? And why do you feel the need to find
>> something wrong with owning and using one?
>
>I didn't. Steve did.

Steve used the word as part of a useful contribution, and you've used
it to advertise that you'd rather quibble and struggle than shell out
a few bucks for a basic tool.

>> >> Having it all in one box is convenient for the uses I need it for.
>>
>> >Looks flash when you show it off, eh.
>>
>> You might explain exactly how *you'd* measure the energy consumption
>> of a dishwasher *without* using something like a Kill-a-Watt. Let me
>> guess... the "professional" and convenient breakout box/clamp-on
>> meter/stopwatch/pen and paper/sit and wait/calculator method? That
>> would look flash when you show it off... until your customer finds out
>> that you only do it that way because you're too pigheaded to spend $25
>> for a the proper tool (http://tinyurl.com/47o95), or $5 for a surplus
>> house meter. But we shouldn't discount the most likely possibility -
>> that you've never measured the energy consumption of a dishwasher.
>>
>> Wayne
>>

<place holder for "solar power consultant's" invisible explanation>

IOW, until Murphy gets a dishwasher, his "consultant" don't need no
steenking Kill A Watt, preferring instead to squander his hours
protecting Usenet readers from those who would mention useful and
affordable gadgets.

Wayne

wmbjk

unread,
Jan 8, 2005, 6:28:41 PM1/8/05
to
On Sat, 8 Jan 2005 11:02:56 -0500, "Gymy Bob" <not...@bight.me>
wrote:

>Why don't one of you experts, that mouth off tell me how you use a
>Kill-a-Watt unit to measure the load of a dishwasher when 99% of them are
>all wired into the circuit?

99% eh? http://tinyurl.com/3vf7h Looks like another Gymyism for m II
to add to his list. Unless you can provide a cite... try here -
www.singleusecircuitbreaker.raredishwashercord.com

Regardless... no matter the hookup, a genuine professional isn't going
to waste his time or his client's money by using an (ordinary) clamp
meter to measure the energy use of a variable load. A dishwasher for
instance takes about an hour to cycle. So at even $25 an hour, a Kill
A Watt would pay for itself the first time it was used on a
dishwasher. Then again, we shouldn't discount the possibility that
there might be legions of homeowners who'd *like* having a
homily-spouting "consultant" hang around logging clamp-meter readings
one appliance at a time.

Wayne


wmbjk

unread,
Jan 8, 2005, 6:29:30 PM1/8/05
to
On Sat, 08 Jan 2005 16:51:32 GMT, Anthony Matonak <res0...@gte.net>
wrote:

> Lucky for us the power company provides a
>meter that measures everything.

It does? :-)

Wayne

Gymy Bob

unread,
Jan 8, 2005, 7:46:10 PM1/8/05
to
The only problem is pulling the desk out and crawling behind it with a
flashlight to get the readings before pulling the plug and losing the data
forever.

"daestrom" <daestrom@NO_SPAM_HEREtwcny.rr.com> wrote in message
news:jbXDd.136787$AL5.1...@twister.nyroc.rr.com...

Clarence_A

unread,
Jan 8, 2005, 7:45:38 PM1/8/05
to
A Engineer considers everything useful in his work, which he
enjoys, to be the toys of his trade! No one would become an
Engineer except for the 'cool' toys to solve problems with!

A 'tool,' For instance - a hammer, is what a tradesman uses to
perform mundane tasks!

Gymy Bob

unread,
Jan 8, 2005, 7:49:25 PM1/8/05
to
Well here is another URL on this for you too with even better information
than your bullshit.

www.gozintothe wall.com/it_doesn't_work_either

"wmbjk" <wmbjk@REMOVE_THIScitlink.net> wrote in message

news:fpq0u0lrntiau8r9v...@4ax.com...

Gymy Bob

unread,
Jan 8, 2005, 7:52:57 PM1/8/05
to
We are not allowed to plug 20A devices into 15 amp circuits here. It must be
direct wired to a #12 AWG 20amp circuit alone. Nobody wants to pay the big
buck for the special receptical and the special plug.

We have an electrical code that tries to prevent fires and injuries, not
written for convenience.

"Anthony Matonak" <res0...@gte.net> wrote in message
news:ocUDd.2235$u47.1800@trnddc09...

Gymy Bob

unread,
Jan 8, 2005, 8:12:32 PM1/8/05
to
And here I thought, that the Engineers thought, a "tool" was the techs that
do all the work he gets credit for!

"Clarence_A" <n...@No.com> wrote in message
news:S8%Dd.9571$5R....@newssvr21.news.prodigy.com...

George Ghio

unread,
Jan 8, 2005, 8:59:14 PM1/8/05
to
In article <fpq0u0lrntiau8r9v...@4ax.com>,
wmbjk <wmbjk@REMOVE_THIScitlink.net> wrote:

That doesn't make two days autonomy either. You are hopeless aren't you.

George Ghio

unread,
Jan 8, 2005, 9:00:29 PM1/8/05
to
In article <b6r0u01fg1o68pvbo...@4ax.com>,
wmbjk <wmbjk@REMOVE_THIScitlink.net> wrote:

That won't work either

George Ghio

unread,
Jan 8, 2005, 9:02:46 PM1/8/05
to
In article <knq0u0p3nolpimiko...@4ax.com>,
wmbjk <wmbjk@REMOVE_THIScitlink.net> wrote:

Still nothing as to how you get two days autonomy. And all that data to
work with too. Sad to see such a cretin flaunt his failure

DJ

unread,
Jan 8, 2005, 11:00:56 PM1/8/05
to
[quote]If you treat your equipment as a toy and investigate every

aspect and weird
quirk because you are fascinated with what it can do, then "YES" I am
talking about you in the latter half (I think?). This is what makes a
hacker/professional or whatever you want to call yourself. Knowing your
equipment becaue you have "played with it" makes you a valuble player
in the
tech game.

Then, that's good? Ok. I'll go along with that ;-).

Really, to play in this game, ya gotta do that. Almost as much to know
what to say when a client calls and says that some component is doing
something odd; if you've screwed something up already intentionally
just to see what it does, you're ahead of the game when you have to
solve the problem when somebody does in unitentionally ;-).

DJ

DJ

unread,
Jan 8, 2005, 11:10:21 PM1/8/05
to
Well, there's the inelegant crawling in behind the stupid thing, but
there's an electrician's rule that "if a circuit has one end, it has
another". I'd go down to the electrical box, and just yank the wire,
build a quickie plug and outlet, and do that... Lots of room, nice and
easy.
All things being equal, though, most of the "normal" consumption
houses I do, the dishwasher, if there, doesn't account for much of the
total. Last one, just checking my data, it was about 1% of the montly
consumption.
And of course, yes, the "usual suspect" was right there at 40%. Hot
water.

DJ

DJ

unread,
Jan 8, 2005, 11:17:02 PM1/8/05
to
True, but that drives me absolutely nuts. True, it's great to have a
total to chase, but I'm not happy until I can account for every watt...
well, almost every watt ;-).
Last fall, I was doing one, and I was coming up short. Spent two days
at this place, did everything from the electric fence in the back
paddock to the composting toilet in the basement, and still was missing
a big chunk. Looking at one of their ponds, I noticed a stream of water
coming into it out of a pipe. Turns out, they had a 220v well pump
running 24/7 at 5.8amps (sorry, the KaW couldn't do this one, so I used
the clamp) just to "fill the pond"!!
Voila. Balance sheet cleared ;-).

DJ

Gymy Bob

unread,
Jan 8, 2005, 11:47:27 PM1/8/05
to
I used to do Bill Complaints for the electric utility. I love the one where
ya' walk into the basement and they have the humidifier on the furnace
running full tilt and the dehumidifier running at the same time.

Or the heater left on in the basement 1500W running on low (never shuts
off) and the upsatirs NG thermostat turned down, bragging about how low
their gas bills are lately, but that damn electric bill is out of this
world???

People are their own worst enemies.

My favourite is the heater that the kids left on last spring but there can't
be anything on since the kids moved out last spring and nobody ever goes
down there...LOL

Ever clamp on the water pipe to the hot water heater? Tells ya' if the
element has a ground in it. Careful. You can get fooled with another ground
in the house finding it's way back to the transformer neutral.

"Geeez. It can't be my water heater!! That units works so well it makes the
water boil in the morning! It must be OK"


"DJ" <dj_mac...@hotmail.com> wrote in message

news:1105244221.9...@c13g2000cwb.googlegroups.com...

m II

unread,
Jan 9, 2005, 4:25:55 AM1/9/05
to
Vaughn wrote:

> "m II" <C...@In.The.Hat> wrote in message news:XCXDd.4876$06.2987@clgrps12...
>
>>Philip Lewis wrote:
>>
>>
>>>hmmm... for smaller loads (10A/240V) you might be able to use a
>>>120->240 transformer. Plug the 120 side of the transformer into the
>>>KaW, and wire a 240V receptacle to the 240 side.
>>
>>
>>You may want to draw that out on piece of paper. Keep in mind that the meter
>>has to read voltage, current and power factor.
>>
>>This may prove to be a bit harder than a first look tells you.
>
>
> Why? It sounds pretty simple to me.

I don't see any possibility of it working. The device has to have 240V going
to it. You want to connect a 240 volt transformer to these supply wires. Ok
so far...you can now measure 120 Volts on the other side of said
transformer. That's not enough. Where do you get you load amperage reading
from? If I were a betting sort....

> Another way *might* be to wire an adapter and use the KaW on just one half
> of the line, then multiply the measured power by two. This idea will
> (naturally) only work with a balanced load (I think you will find that most 220
> loads are balanced.)
>

Not in the case of a dryer or electric stove. In a dryer, the motor and
controls are 120. The elements MAY be switched between 120/240, depending on
setting. Same with stoves. With the advent of solid state heat controls,
though, this series/parallel, 120/240 volt switching is nowhere near as
common as it was some years ago. In any two wire 240 volt load, I'd agree
with you.

mike


m II

unread,
Jan 9, 2005, 4:33:23 AM1/9/05
to
Gymy Bob wrote:

> You can get fooled with another ground
> in the house finding it's way back to the transformer neutral.

Thank you for yet ANOTHER gem...


--
My 'GymBobism' collection...updated daily:
=========================================
##some '#' bracketed text added for clarification##


You sure spent a lot of time trying to convince me you don't knwo what I am
talking about...LOL

At 11.6 volts a 12v battery is about 50-70% charged still.

Polish solar panels are what americans called "flashlights"

Propane will disapate and freeze when it evaporates.

Gasoline is not nearly as volatile as hydrogen.

Many people have browsers that economize the download

Try to stay on topic and on thread too bean brain.

Perhaps try Outlook Express or another browser that knows how to thread
posts.

Let's say youre solar cell was trying to put out
14.3 volts DC and you stuck a 10 ohm meter in series with a charged 13.8
volt DC battery.

This is power grid induction through capacitive proximity

You can get fooled with another ground in the house finding it's way back to
the transformer neutral.

A thought I have is rain water from a roof on a three story home through a
micro-turbine.

Setback thermostats only work efficiently for small differentials, dependant
on the time duration.

Breakers are good for one time usage of one fault and then they need to be
replaced for any warrantied usage.

If the breaker interupts a fault, it should be replaced.No warranty will
honoured after that.

I don't have a link at this time

There are no hydrogen molecules in water and the oxygen in water isn't
flammable either.

Water is inert and contains no energy to be used. Get some basic chemistry
first.

Quite simply put, for some of the boneheads here.

NiCads and NiMh batterries are designed to take a current charge forever.

Did they have electricity back in 1994?

I have been around so long with this stuff I believe I invented the diode in
1941 but I am not familiar with the solar panel usage requirements of them.
(no P & N substrate explanations please. I wrote the GE manual...LOL)

NOTE: do not pass ground wires through metal holes or cable clamps with two
screws on a metal surface.

There is **NOT*** enough energy in a lightning bolt to power your house for
more than an hour...if that. Do the math.
The figures escape me but let's say it puts out a roughly MWatt of power for
100 nanoseconds?
100 x 10-9 x 1 x 106 / 3600 (sec/hr) = 0.0027 wH
oooops.... Wouldn't light your home for a 1/2 second.
OK..OK.. multiply the figures time 100 or 1000. Now it would light a 100W
bulb for 1 second.

The IEEE-232 standards were never followed or known by many.

Fossil fuels are still renewable and being cxreated as we speak.

Children are venerially created.

If you want to discuss this then fine, otherwise go fuck yourself like your
mother did.

Can you let go of my dick before it explodes on ya, goofball?

Petroleum is not related to Natural gas.

I would rather work at my $100/hour job than at chopping wood for hours to
save $3/hour

I have no license, I wire and inspect other's wiring for a job and work for
a medium size electrical utility.

The majority prefers top posting.

Get your tear ducts flushed by a knowledgeable optometrist.

Not many materials have the huge exponential resistance/heat curve aluminum
does. Overload doesn't make it glow like copper...it flashes and explodes.

A bathroom fan motor would never push hot air down ten feet or cold up ten
feet.

Bathroom fans have a hard time pushing 55 cfm through a 3-4" pipe 20
horizontal feet. They are made to vent smells and humid air horizontally
only.

Why not spend the money on a contract with the grid company and get an
exclusive line to your house and never have brownouts.

Usenet rules dictate top posting for readability

Many cell modems are set up to filter bottom posts out.

Cell modems do not cut off anything.

What security flaws. ##referring to Outlook Express##

Bottom posting was the was in the 70s and 80s before threading browsers were
available cheap like OE

What is a PMW?

10 pounds per gallon Imperial. That gallon is totally unique to the
US....ooops..I think all gallons are unique to the US now.

The standard Imperial gallon the whole world used weighs 10 pounds exactly.

The copper isn't worth more than 5 cents per pound. It is classed a mixed
copper and nobody wants it.

Hey moron! The copper is considered "mixed" copper and is worth about $0.02
per pound, if he seperates it all.

Just don't ever lose weight. Toxins are stored in your fat cells.

Did you know, **NO***, I repeat ***NO*** death has ever been related to
PCBs?

Insulated square copper wires from a dry transformer are not 99% copper and
take a lot of work to remove the insulation.

I have tonnes of insulated copper wire if you want it. I think you could
almost have for the picking it up. How many bins can you take per year

50 lbs? We have it by the bin full. Mostly #6 to 650 MCM. I beleive you
would have to leave a bin and then pick it up full later to compete with the
current scrapper.

Can't this tranformer be used by somebody to generate a second 120V from a
single phase 120V inverter? It sounds pretty beefy.

BTW: once you knock the wedge out of the coil form the laminations will be
easier to get out. This keeps them from buzzing until the varnish and other
impregnations go into it.

All you guys have a bad Christmas or Jewish and didn't see Santa or something?

Run each signal twisted with a ground for noise. RD twisted with gnd as a
pair, TD twisted around ground as a pair etc... This means signal/logic
ground not power ground or case ground, if they are different. Do not
connect the other ends of the ground conductors.

Tar pitch in a flourescent ballast does ***NOT*** contain PCBs and probably
never did.

Religion is not genetic or even herodigious

I believe the warmest part of the lake is just below the ice. As the water
frezes it rises to the top and joins the other ice formations.

Gel cell won't cut it when it comes to putting out 100A or more. They cook
in one spot and the rest of the electrolyte doesn't circulate fast enough.

There is nothing standard about USanian measurements. They changed their
sizes to avoid trading with the rest of the world. This worked for a few
centuries but the rest of the world moved on to the metric system to avert
the confusion the US caused.

Ever put your ohmmeter (do I need to explain an ohmmeter also?) across a
capacitor? It measures infinity after charging to the supply voltage because
the electrolyte is an insulator.

Electrolytes are not conductors of electricity in a capacitor.

If the electrolyte conducted it would be a resistor.

I doubt they are 4 farads. More likely 4 microfarads uf. ##referring to
4000mfd caps##

Sometimes it is an ego boost to have these so-called "professionals" come
and beg for information because they can't our toys do what the good guys
can but I would never hire them given a choice.

Do you measure altitude in degrees? Many aeronautical people would disagree
with you. ##referring to solar azimuth/altitude thread##

My house is filled with motion detectors. They don't all operate lights.
They mostly signal my house control computer and it decides what to do and when.

m II

unread,
Jan 9, 2005, 4:49:03 AM1/9/05
to
DJ wrote:


> And of course, yes, the "usual suspect" was right there at 40%. Hot
> water.

In Alberta the the vast majority of water heaters are natural gas. I was a
bit surprised to see an electric tankless setup a few months back. They had
bought it because it was relatively cheap to purchase.

It was comprised of roughly 30cm (1 ft) of 3/4 inch water line in a
horseshoe shape with an electric heater in each leg. These were connected to
TWO 2pole 30 amp breakers.

After a year of use, they went back to a normal tank, as they didn't like
paying the four hundred dollar a month electrical bill.

The interior of British Columbia has many electric heated houses. Mainly
baseboard heat. Your heart has to go out to the poor dwellers. Gas is
getting pretty wide spread now, but the rates go up regularly.

Outlawing ALL corporate donations to ALL political parties would be good
start in getting OUR public servants to listen to US again.


mike

wmbjk

unread,
Jan 9, 2005, 8:52:23 AM1/9/05
to
On Sat, 8 Jan 2005 19:52:57 -0500, "Gymy Bob" <not...@bight.me>
wrote:

>We are not allowed to plug 20A devices into 15 amp circuits here. It must be


>direct wired to a #12 AWG 20amp circuit alone. Nobody wants to pay the big
>buck for the special receptical and the special plug.
>
>We have an electrical code that tries to prevent fires and injuries, not
>written for convenience.

Bravo! You've hit on the five main problems with dishwashers - rogue
units adding 5A at border crossings, obscenely expensive "special"
power cords, risk of fire and personal injury, and the lack of
convenience. Hopefully the folks at 60 Minutes are reading....

Wayne

wmbjk

unread,
Jan 9, 2005, 8:54:00 AM1/9/05
to
On Sat, 8 Jan 2005 19:46:10 -0500, "Gymy Bob" <not...@bight.me>
wrote:

>The only problem is pulling the desk out and crawling behind it with a


>flashlight to get the readings before pulling the plug and losing the data
>forever.

Yeah, you wouldn't want to buy any of those pricey extension cords.
These &*^%ing wire manufacturers must think we're made of money.

Wayne

DJ

unread,
Jan 9, 2005, 12:16:34 PM1/9/05
to
> Or the heater left on in the basement 1500W running on low (never
shuts
off) and the upsatirs NG thermostat turned down, bragging about how low
their gas bills are lately, but that damn electric bill is out of this
world???

Another fun one I came across was a dual wood-electric furnace. A 20kw
electric element in addition to the firebox. Seems it wasnt enough for
the previous owner, though, so they stuck a 4kw booster in the ductwork
as well, just an anonymous gray box on the ductwork... with a 220v line
running into it ;-).
The previous guy musta known *some* stuff, though, because he had it
triggered on a air flow switch; when the furnace blowers ran, so did
it! So even when the new owners *thought* they were being energy
conscious, and just using the wood portion of the furnace, with the
main 20kw breakers shut down, as soon as the forced air blower engaged,
bam, an extra 4kw draw ;-).

Thing is, grid electricity, really, is awful cheap, and people play
with it like SuperSoakers at a ten year old kids birthday party.
Yup, humidifiers, de humidifiers, UV water purifiers, forgotten 1kw
space heaters, 100 watt outside lights people forget to turn off...
DJ

Gymy Bob

unread,
Jan 9, 2005, 5:46:20 PM1/9/05
to
So the voltage drop in the cheap extension cord doesn't get compensated for?
I thought you were a professional and got the details?

Does the current go up or down when you have voltage drop?

LOL


"wmbjk" <wmbjk@REMOVE_THIScitlink.net> wrote in message

news:ppd2u0hab56j4noge...@4ax.com...

Philip Lewis

unread,
Jan 9, 2005, 6:09:59 PM1/9/05
to
"Gymy Bob" <not...@bight.me> writes:
>We are not allowed to plug 20A devices into 15 amp circuits here. It must be
Not sure where you are, but we here in pittsburgh PA, USA are not
allowed to do that either, nor are we able to since a device requiring
20A has a different plug than a 15 amp device.

Mind you, of the several "not built in" dishwashers that my family/
friends have had, none seemed to have been 20A. All had the standard
parallel blade 15A plugs.


>the big buck for the special receptacle and the special plug.
umm... big bucks? we'd be talking a $10 increase max.
(and probably closer to $2)

I know if I were going to install a built in, i'd wire it via a plug
and receptacle since it would make it easy to take out and
service... same reason i put in shutoffs under the sink when I last
replaced the faucet.

--
be safe.
flip
Ich habe keine Ahnung was das bedeutet, oder vielleicht doch?
Remove origin of the word spam from address to reply (leave "+")


Vaughn

unread,
Jan 9, 2005, 6:25:59 PM1/9/05
to

"Gymy Bob" <not...@bight.me> wrote in message
news:RP2dnUcdtp0...@golden.net...

> So the voltage drop in the cheap extension cord doesn't get compensated for?
>...

> Does the current go up or down when you have voltage drop?

It depends on the type of load.

Vaughn

wmbjk

unread,
Jan 9, 2005, 7:40:50 PM1/9/05
to
On Sun, 9 Jan 2005 17:46:20 -0500, "Gymy Bob" <not...@bight.me>
wrote:

>So the voltage drop in the cheap extension cord doesn't get compensated for?


>I thought you were a professional and got the details?
>
>Does the current go up or down when you have voltage drop?
>
>LOL

You probably shouldn't be laughing right after needing a public
prompting to use an extension cord. But at least you don't have to
crawl around under the desk anymore. Thank God for Usenet eh?

Wayne

LurryLixx

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Subject: Re: Steve's Power Toys
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<ghio-7FB181.2...@news.chariot.net.au>
<LuoDd.107704$K7.2...@news-server.bigpond.net.au>
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<eLwDd.9792$Xs6....@twister.nyroc.rr.com>
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Philip Lewis wrote:

> hmmm... for smaller loads (10A/240V) you might be able to use a
> 120->240 transformer. Plug the 120 side of the transformer into the
> KaW, and wire a 240V receptacle to the 240 side.


You may want to draw that out on piece of paper. Keep in mind that the meter
has to read voltage, current and power factor.

This may prove to be a bit harder than a first look tells you.

mike


"m II" <C...@In.The.Hat> wrote in message news:XCXDd.4876$06.2987@clgrps12...
> Philip Lewis wrote:
>
> > hmmm... for smaller loads (10A/240V) you might be able to use a
> > 120->240 transformer. Plug the 120 side of the transformer into the
> > KaW, and wire a 240V receptacle to the 240 side.
>
>
> You may want to draw that out on piece of paper. Keep in mind that the
meter
> has to read voltage, current and power factor.
>
> This may prove to be a bit harder than a first look tells you.
>
>
>
>
>

> mike


LurryLixxx

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Vaughn wrote:

mike

news:DM6Ed.84336$KO5.25348@clgrps13...

LurryLixxx

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<2fnvt09qgrgedbrev...@4ax.com>
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Gymy Bob wrote:

Children are venerially created.

What is a PMW?

"m II" <C...@In.The.Hat> wrote in message

news:DT6Ed.84421$KO5.80460@clgrps13...

LurryLixxx

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DJ wrote:


mike


"m II" <C...@In.The.Hat> wrote in message

news:j67Ed.84597$KO5.24411@clgrps13...

Gymy Bob

unread,
Jan 9, 2005, 10:03:56 PM1/9/05
to
Your extension cords you have so handy are good for 15amperes right? Like
#14 awg wire in all them?

I don't endanger my clients with dangerous outlandish practices like #16 or
#18 gauge extansion cords strung all over their houses behind appliances. I
use professional meters, not something I bought from a junk dealer on eBay.

Thank Gawd soembody told you about poor safety practices. Did you get your
ticket from a gumball machine or did your momma teach you?

LOL
"wmbjk" <wmbjk@REMOVE_THIScitlink.net> wrote in message

news:t1j3u0dhr3g67ndf2...@4ax.com...

wmbjk

unread,
Jan 10, 2005, 9:25:12 AM1/10/05
to
On Sun, 9 Jan 2005 22:03:56 -0500, "Gymy Bob" <not...@bight.me>
wrote:

>Your extension cords you have so handy are good for 15amperes right? Like


>#14 awg wire in all them?

Extension cords come in many shapes and sizes. A 6 ft. 14-3 would be
just dandy to keep you out from under the desk when using a KaW. A 100
ft. 12-3 would also do nicely if part of it were coiled around your
foot, and another part snagged on a passing elevator.

>I don't endanger my clients with dangerous outlandish practices like #16 or
>#18 gauge extansion cords strung all over their houses behind appliances. I
>use professional meters, not something I bought from a junk dealer on eBay.

My guess is that your equipment and clients are in the same league as
our other resident blowhard's.

Wayne

Philip Lewis

unread,
Jan 10, 2005, 10:46:32 AM1/10/05
to
m II <C...@In.The.Hat> writes:
>>>Philip Lewis wrote:
>>>>hmmm... for smaller loads (10A/240V) you might be able to use a
>>>>120->240 transformer. Plug the 120 side of the transformer into the
>>>>KaW, and wire a 240V receptacle to the 240 side.
>I don't see any possibility of it working. The device has to have 240V going
>to it. You want to connect a 240 volt transformer to these supply wires. Ok
>so far...you can now measure 120 Volts on the other side of said
>transformer. That's not enough. Where do you get you load amperage reading
>from? If I were a betting sort....

Ok... perhaps my understanding of a transformer is wrong, but i
understand the following:

A (simple) transformer has two sides, primary and secondary.
If the step up of V on the primary is 2, (ie 120->240) then the
current will drop by the inverse (1/2). (less some transformer loss)
20 amps on the primary at 120V equates to 10 amps-T(loss) on the
secondary at 240V.

so on "paper":
<PRE>
+----+
C |
+---------+ +-----+ C |
| K|in K|o C C (~)240v
(~)120V a| a|u C C |
| W| W|t C C |
+---------+ +-----+ C |
+----+

</pre>

Just plug your 240V device into the 240V side of the transformer.

If you average 15A for 1 hour on the 120 side (which is what the
KaW is measuring) then you've used 1.8kwH. You know the 240V load drew
about that much (less transformer loss).... an average of 7.5A over
the same hour.

The complaint I hear is that I neglected to consider power
factors and the original transformer loss. I don't know those
calculations, or how to minimize them.

Thanks for the folks who pointed out the KaW was a 15A device, BTW.

m II

unread,
Jan 10, 2005, 10:48:46 AM1/10/05
to
Vaughn wrote:


Very true. I've seen a few burned out motors due to too long of an extension
cord. we figured the load amperage went up roughly twenty percent. These
were table saws used on a construction site.


mike


--
My 'GymBobism' collection...updated daily:
=========================================
##some '#' bracketed text added for clarification##

We need less morons like another clone of Moron II here. ##My fifteen
minutes of FAME!##

Children are venerially created.

What is a PMW?

Enlighten please (like it really matters...LOL)


m II

unread,
Jan 10, 2005, 11:27:49 AM1/10/05
to
Philip Lewis wrote:

> Ok... perhaps my understanding of a transformer is wrong, but i
> understand the following:
>
> A (simple) transformer has two sides, primary and secondary.
> If the step up of V on the primary is 2, (ie 120->240) then the
> current will drop by the inverse (1/2). (less some transformer loss)
> 20 amps on the primary at 120V equates to 10 amps-T(loss) on the
> secondary at 240V.
>


Yes. Right on..but let's do it the other way. If the current on the
secondary is 35, then the primary would be 70. This is why you had
previously mentioned that the idea would be good for 7.5 amp 240 loads maximum.

> so on "paper":
> <PRE>
> +----+
> C |
> +---------+ +-----+ C |
> | K|in K|o C C (~)240v
> (~)120V a| a|u C C |
> | W| W|t C C |
> +---------+ +-----+ C |
> +----+
>
> </pre>
>
> Just plug your 240V device into the 240V side of the transformer.


Yes. That would work if the load were ONLY 240 volts. You'd need a centre
tapped transformer in order to get a neutral. Dryers and Stoves have 120 v
motors and or controls. That centre tap would have to be grounded to clamp
the voltage of each winding leg at 120v. .else we get a floating neutral and
the voltage on each leg varying to some degree with any unbalanced load.


> If you average 15A for 1 hour on the 120 side (which is what the
> KaW is measuring) then you've used 1.8kwH. You know the 240V load drew
> about that much (less transformer loss).... an average of 7.5A over
> the same hour.

Yes. That's all correct


> The complaint I hear is that I neglected to consider power
> factors and the original transformer loss. I don't know those
> calculations, or how to minimize them.

I think for the purposes at hand we can safely forget that stuff. We are in
an ideal world as far as our exploration here is concerned. We can even
ignore rolling friction and the resistance of air. *I* can even ignore the
furnace squeaking for the last week.


Ok now..resistive loads have a unity power factor and the closer a motor
runs to it's rated output, the closer the power factor gets to unity. Very
lightly loaded motors have the poorest PF. From what I've seen of
manufacturing economics, you can bet they would NEVER put in a motor bigger
than the smallest they could reasonably get away with. In a dryer this
factor would be negligible. Also, the meter on the house will only charge
you for REAL power (Watts) used, not apparent power (VA), so the point is
kinda moot.

Even in industrial settings, they *usually* don't get to excited about power
factor correction until it gets to below 80 percent.


> Thanks for the folks who pointed out the KaW was a 15A device, BTW.

Bless them all. Good people.


NOW, having said all that, I have **a small confession** to make.

I screwed up in my original protestations to the suggestion. When I thought
about the transformer being used, I had visions of it being used to feed the
KiloWatt device from the 120V side of it..(somehow). That was before I
actually did a web search and saw the actual feed-through configuration of
this device.

All I can say in my defense is that it was late. The wind had taken the roof
off the house. The dogs were chewing my right leg off at the knee because I
hadn't fed them. My daughter was telling me she was pregnant with quints and
didn't know who the father was. A fire in the garage was visible through the
kitchen window. I had forgotten my anniversary. Again.

So, you see, my fear of Wife clouded my thinking. I am sorry.


mike

m II

unread,
Jan 10, 2005, 11:38:13 AM1/10/05
to
Philip Lewis wrote:

> "Gymy Bob" <not...@bight.me> writes:
>
>>We are not allowed to plug 20A devices into 15 amp circuits here. It must be
>
> Not sure where you are, but we here in pittsburgh PA, USA are not
> allowed to do that either, nor are we able to since a device requiring
> 20A has a different plug than a 15 amp device.
>
> Mind you, of the several "not built in" dishwashers that my family/
> friends have had, none seemed to have been 20A. All had the standard
> parallel blade 15A plugs.


I've seen ONE twenty amp dishwasher in the last thirty years and that was in
a restaurant. The built in units in residential now usually provide a cord
that MAY be wired into the junction box at the base of the machine. The code
here does not require a receptacle, but it MAY be used. The electrical
contractors usually just leave a few feet of wire (loomex, ???ex) coming out
of the floor or wall. This gets wired directly in.

Some of them are not thinking, though. When they connect, the wire gets cuts
off to fit the need. That means disconnection the machine to get at the
plumbing. Dumb. There should be five feet of wire left to facilitate
appliance removal.


>
>>the big buck for the special receptacle and the special plug.
>
> umm... big bucks? we'd be talking a $10 increase max.
> (and probably closer to $2)
>
> I know if I were going to install a built in, i'd wire it via a plug
> and receptacle since it would make it easy to take out and
> service... same reason i put in shutoffs under the sink when I last
> replaced the faucet.

That as the reasoning when dryer and Range receptacles were made mandatory.
Before that, the hard wiring meant a phone call to the expensive trades
types. Mind you, it was easy money to make..

mike

DJ

unread,
Jan 10, 2005, 12:42:07 PM1/10/05
to
> In Alberta the the vast majority of water heaters are natural gas. I
was a
> bit surprised to see an electric tankless setup a few months back.
They had
> bought it because it was relatively cheap to purchase.

Salesmen can be quite persuasive ;-). Really, though, from the
research I've done, the only thing, really, a tankless system saves is
space. Never seen the electric ones, just the gas ones, though. A
propane hot water heater is what, 1200$ CAN? I usually see the in-lines
for about 1500$.

> It was comprised of roughly 30cm (1 ft) of 3/4 inch water line in a
> horseshoe shape with an electric heater in each leg. These were
connected to
> TWO 2pole 30 amp breakers.

Well now. That's a bit of juice, eh?

> After a year of use, they went back to a normal tank, as they didn't
like
> paying the four hundred dollar a month electrical bill.

I'm sure they were more comfortable watching it disappear into the gas
bill ;-).
But, then, out there in the gas patch, I guess it's cheaper than it is
here? Can't beat SDHW, man. That, and wood stove loops or furnace
loops. Waste not, want not ;-).

> Outlawing ALL corporate donations to ALL political parties would be
good
> start in getting OUR public servants to listen to US again.

That's another kettle of fish too, but yes, political interference is
a problem. One of the things I have on my webpage is form letters (in
french and english) and address search links for the various Ontario
and Quebec politicos, that interested parties can download, fill out,
and send off to the appropriate people; basically, asking the various
departments to get off their asses and support alternative energy in
all its forms.
I'm sure you could find an equivalent out west!

F'rinstance, the City of Ottawa outright prohibits the installation of
SDHW panels on people's houses, because the CSA certification is still
on-going. Too stupid. Several of the manufacturers are *ON* the CSA
Board, writing the certifications, including my favorite, the folks at
Thermo-Dynamics.

Ah well. We fight the war as we can.

DJ

wmbjk

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Jan 10, 2005, 1:04:28 PM1/10/05
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On Mon, 10 Jan 2005 16:38:13 GMT, m II <C...@In.The.Hat> wrote:


>That as the reasoning when dryer and Range receptacles were made mandatory.
>Before that, the hard wiring meant a phone call to the expensive trades
>types. Mind you, it was easy money to make..

And there you have it - competitive home builders can't afford to make
a habit of paying out easy money. Plus, it's probably cost-effective
to provide receptacles for these appliances so that they can be
"installed" by delivery guys...er, appliance technicians. After a few
hundred deliveries...I mean, "Initial Critical Site Setup and
Installation Verifications", the tech can hang out an "Appliance
Consultant" shingle, get a computer and ..... ;-)

Wayne

DJ

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Jan 10, 2005, 1:56:47 PM1/10/05
to
Nah, Wayne, that would never work on a couple of levels: the retailers
would have to pay their delivery guys decent wages because they'd be
"technicians" then, and they wouldn't want that.
And then the retailer would have to assume responsibility for any
damage their "technicians" did during install, like installing vents
and such in the case of hoods and dryers, and water, in the case of
dishwashers.

;-).

DJ

Steve Spence

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Jan 10, 2005, 2:39:24 PM1/10/05
to
They are inexpensive, and they work well.

Steve Spence
Dir., Green Trust
http://www.green-trust.org

Larry Lix wrote:
> How are those Wally mart batteries? I been thinking of getting a 48V set of
> them myself soon.
>

George Ghio

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Jan 10, 2005, 6:31:44 PM1/10/05
to
That does not make two days autonomy either.

Gawd, what a weasel

In article <vs35u0pajnjv5vikm...@4ax.com>,

Gymy Bob

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Jan 10, 2005, 7:01:29 PM1/10/05
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Of course they have the Eveready name on them but not sure who makes them
for real.

"Ignoramus13229" <ignoram...@NOSPAM.13229.invalid> wrote in message
news:crultf$df9$0...@pita.alt.net...


> On 2005-01-10, Steve Spence <spe...@green-trust.org> wrote:
> > They are inexpensive, and they work well.
>

> I believe that they are made by Exide. I have two deep cycle batteries
> from Sam's club (a unit of Walmart Corporation). They perform rather
> well. I need them because I own a boat, a generator and I like the idea
> of having extra batteries.

Gymy Bob

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Jan 10, 2005, 7:05:38 PM1/10/05
to
Basically correct. Try thinking this way VA = VA

Volts x Current (in amps) = Volts x Current (in amperes)
no matter what voltage you transform to the VA is always the same (less core
losses)

The turns ratio is directly proportional to the voltage ratio and the
current ratio is inversely proportionate to the turns ratio. Impedance is
directly proportionate to the square of the turns ratio.

The more iron in the core, the more VA a transformer can handle.
A 50Hz transformer needs double the iron a 60Hz transformer needs for the
same VA capacity.

"Philip Lewis" <flip+sp...@andrew.cmu.edu> wrote in message
news:qvjbrbx...@unix42.andrew.cmu.edu...

Gymy Bob

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Jan 10, 2005, 7:07:44 PM1/10/05
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Most electricians doing home wiring wouldn't know what a 20A receptical was
and the 20A circuit is required here.

"DJ" <dj_mac...@hotmail.com> wrote in message
news:1105383407.7...@c13g2000cwb.googlegroups.com...

m II

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Jan 10, 2005, 9:07:54 PM1/10/05
to
Gymy Bob wrote:

> Basically correct. Try thinking this way VA = VA
>
> Volts x Current (in amps) = Volts x Current (in amperes)
> no matter what voltage you transform to the VA is always the same (less core
> losses)


More to it than that.

In a well designed transformer, the core losses are only HALF of the total
losses. The core losses are comprised of eddy current losses and hysteresis
losses. The I^2R losses in the windings should be matched to these.

=======================================================
Efficiency is a function of a transformer's power losses, and two factors
account for nearly all of these losses. One is winding copper loss. Since
you have two sets of windings, you have two components to copper loss:
primary and secondary winding copper loss.

The second factor accounting for transformer power losses is core loss. You
get core losses due to hysteresis - a function of several characteristics of
the core steel (or iron), all determined by the manufacturing process.
Fortunately, the core losses for any given transformer stay constant
(provided supply frequency is constant). You obtain maximum efficiency when
winding copper loss equals core loss.

http://www.ecmweb.com/mag/electric_basics_transformer_voltage/
=======================================================

> The turns ratio is directly proportional to the voltage ratio and the
> current ratio is inversely proportionate to the turns ratio. Impedance is
> directly proportionate to the square of the turns ratio.
> The more iron in the core, the more VA a transformer can handle.


I've seen transformers with NO iron in the core. I guess they can't handle
ANY Volt-Amps. It would be more accurate to say that the VA a core can
handle is frequency dependent.

> A 50Hz transformer needs double the iron a 60Hz transformer needs for the
> same VA capacity.

Please provide a site for that statement. It seems **WAY** out of whack. In
fact, it's worthy of adding to the collection.

I found one that said TWENTY percent more core is needed and even that may
be too much.

==========================================
Going the other way, from 60 Hertz design to 50 Hertz usage, is a *BIG
DEAL*. The applied input voltage should be reduced to 5/6 name plate rating
or bad things can/will happen. They need about 20 % more "iron" to work at
50 Hertz.

http://ed-thelen.org/1401Project/TricksFor50-60cycles.html
==========================================

===================================
How core area is 'guessed' at, for a preliminary trial before making a
transformer:

http://focus.ti.com/lit/ml/slup126/slup126.pdf
===================================

===================================
This also disagrees with you. They show roughly four times the metal needed
for a *ten* fold increase in VA...same frequency, mind you.

http://members.tripod.com/~schematics/xform/graph.gif
http://members.tripod.com/~schematics/xform/xformer3.htm
===================================

Children are venerially created.

What is a PMW?

A 50Hz transformer needs double the iron a 60Hz transformer needs for the
same VA capacity.

Luuury_Lixxxx

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<ppd2u0hab56j4noge...@4ax.com>
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Vaughn wrote:


mike

Children are venerially created.

What is a PMW?


"m II" <C...@In.The.Hat> wrote in message news:ytxEd.16266$06.11279@clgrps12...

Luuury_Lixxxx

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Philip Lewis wrote:


mike
"m II" <C...@In.The.Hat> wrote in message news:92yEd.16335$06.9832@clgrps12...

Luuury_Lixxxx

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Gymy Bob wrote:

http://www.ecmweb.com/mag/electric_basics_transformer_voltage/
=======================================================

http://ed-thelen.org/1401Project/TricksFor50-60cycles.html
==========================================

http://focus.ti.com/lit/ml/slup126/slup126.pdf
===================================

Children are venerially created.

What is a PMW?

"m II" <C...@In.The.Hat> wrote in message news:_xGEd.17810$06.7465@clgrps12...

Luuury_Lixxx

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Philip Lewis wrote:

mike
"m II" <C...@In.The.Hat> wrote in message news:VbyEd.16337$06.5609@clgrps12...

wmbjk

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Jan 11, 2005, 9:56:34 AM1/11/05
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On Mon, 10 Jan 2005 19:07:44 -0500, "Gymy Bob" <not...@bight.me>
wrote:

>Most electricians doing home wiring wouldn't know what a 20A receptical was


>and the 20A circuit is required here.

Oh really. So they know to make it 20 Amps, and how to install dryer
and range receptacles, yet have some sort of mysterious mental
deficiency when it comes to the infamously unheard-of 20A version?
Perhaps those could be installed by the carpet guys until the Royal
Commission releases its report.

Wayne

Gymy Bob

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Jan 11, 2005, 6:40:50 PM1/11/05
to
I thought Royal made instant puddings. I only have to listen to the
electrician brains here to figure out they are the "cream of the crop" This
worries me but I see it most days at work anyway...LOL

"wmbjk" <wmbjk@REMOVE_THIScitlink.net> wrote in message

news:s0q7u0pf2u1v7ppks...@4ax.com...

daestrom

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Jan 11, 2005, 9:10:06 PM1/11/05
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"Gymy Bob" <not...@bight.me> wrote in message
news:_NednXs2UJh...@golden.net...

> Basically correct. Try thinking this way VA = VA
>
> Volts x Current (in amps) = Volts x Current (in amperes)
> no matter what voltage you transform to the VA is always the same (less
> core
> losses)
>
> The turns ratio is directly proportional to the voltage ratio and the
> current ratio is inversely proportionate to the turns ratio. Impedance is
> directly proportionate to the square of the turns ratio.
>
> The more iron in the core, the more VA a transformer can handle.
> A 50Hz transformer needs double the iron a 60Hz transformer needs for the
> same VA capacity.
>

Nonsense, you don't know what you're saying. For a given ampacity, the
copper windings rule. For a given volt-second, the iron rules. When
running frequency down from 60 to 50, you must either reduce the voltage to
5/6 or increase the iron by 6/5. the saturation limit of the iron is a
constant volt/hz ratio. If the copper windings are left 'as-is', the
current capacity is the same.

So a given transformer designed to operate at its limit at 60 hz, when
connected to 50 hz has to have the voltage reduced to 5/6ths. And that
means the VA is 5/6ths.

daestrom


Gymy Bob

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Jan 11, 2005, 11:14:41 PM1/11/05
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As a design engineer of transformers for 10 years I happen to know you are
full of shit.

"daestrom" <daestrom@NO_SPAM_HEREtwcny.rr.com> wrote in message
news:2G%Ed.139233$AL5....@twister.nyroc.rr.com...

m II

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Jan 12, 2005, 2:28:51 AM1/12/05
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Gymy Bob wrote:

> As a design engineer of transformers for 10 years I happen to know you are
> full of shit.

Thank you kindly. I was worried I wouldn't meet my quota for the day. Your
dependability is to be commended.


mike

Children are venerially created.

What is a PMW?

A 50Hz transformer needs double the iron a 60Hz transformer needs for the
same VA capacity.

daestrom

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Jan 13, 2005, 4:29:16 PM1/13/05
to

"Gymy Bob" <not...@bight.me> wrote in message
news:B5-dnaFyAKI...@golden.net...

> As a design engineer of transformers for 10 years I happen to know you are
> full of shit.
>

If you design iron core transformers, you know that the volts/hz ratio is
very important in avoiding saturation of the iron. And that the VA rating
is the product of allowable voltage and current.

You would further know that current limitations are based on heating in the
windings from I^2R losses and don't change with frequency unless you get up
above a few kHZ when skin affect starts to seriously reduce the effective
resistance.

The fact that you *don't* know this means you either design just air-core
units, or are blowing a lot of smoke.

daestrom


Gymy Bob

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Jan 13, 2005, 7:06:19 PM1/13/05
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There are many minimum parameters that must be maintained in any transformer
design. There must be enough ***iron*** in the core to handle the flux
density produced or the design isn't going to work. Once the core saturates
because of lack of ***core iron***, there is no more apparent power
transformation available. Of course, the conductors have to handle the
current and the quantity of turns has to be high enough to keep the
volts/turns capabilty down given the quantity and quality of the ***CORE
iron*** mass.

Perhaps read up some more.


"daestrom" <daestrom@NO_SPAM_HEREtwcny.rr.com> wrote in message

news:MKBFd.150005$AL5....@twister.nyroc.rr.com...

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