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 Posted: Thu Nov 9th, 2017 01:43 am
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Richard Daugird
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My Variac Has five terminals on it. Can someone explain how I should wire up my cord to power it and my receptacle to plug my a fan into it? I marked the drawing with ABCD. Need to know which one goes to what number on the Variac    

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 Posted: Thu Nov 9th, 2017 01:44 am
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Richard Daugird
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 Posted: Thu Nov 9th, 2017 01:46 am
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Richard Daugird
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Hot, ground, neutral, common confuses me. ABCD 12345 I can understand

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 Posted: Fri Nov 10th, 2017 06:01 am
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David Allen
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Richard Daugird wrote: Hot, ground, neutral, common confuses me. ABCD 12345 I can understand
With the info you drew, I can say this:

D and B are "hot" or "line" or "L1"

A and C are "neutral" or "N"

The hot is the smaller slot. The Neutral s the larger slot. The ground is the round hole.

I can help more but will need you to post the variac terminals and / or wiring diagram!

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 Posted: Fri Nov 10th, 2017 06:54 am
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Richard Daugird
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Dave you are always a great help. I’ll get that information. Thanks so much.

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 Posted: Fri Nov 10th, 2017 03:39 pm
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Richard Daugird
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 Posted: Fri Nov 10th, 2017 04:17 pm
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David Allen
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See if this helps!




Note that the line colors on the diagram are not intended top represent any color code or wire colors. I just chose them to be visible in the picture. Normally, Ground is always Green; the input L would be Black; the N would be White; and the L-Out would be some other color, or black - but never white or green.

Here is a schematic of that.  This one shows a fuse / breaker in the L-out line which is a good idea, too.

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 Posted: Fri Nov 10th, 2017 05:14 pm
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Richard Daugird
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David - You. Are. The. MAN! 👏 Even I can follow that.

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 Posted: Fri Nov 10th, 2017 05:43 pm
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David Allen
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Richard Daugird wrote: David - You. Are. The. MAN! 👏 Even I can follow that.
Thanks, glad to be of help!

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 Posted: Fri Nov 10th, 2017 07:32 pm
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Jim Kovar
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Richard, the drawing David shows
is exactly the way to wire your variac

to 120V.   :thumbup

There is a caveat,...   your variac is

designed for a 240V input which will
produce 0 to 280V at the output.



So, by inputting 120V (which is only
half the designed 240V input
), it will
only output half the designed output
,
ie 0 to 140V.

The 2.25A maximum output rating
stays the same.





Last edited on Fri Nov 10th, 2017 09:07 pm by Jim Kovar

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 Posted: Fri Nov 10th, 2017 07:58 pm
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Richard Daugird
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Wow, I AM dumb. How did I not notice the 240? But I guess it's O.K. anyway.

I wonder how many electrical devices are 240 and only draw 2.25 amps?

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 Posted: Fri Nov 10th, 2017 08:01 pm
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Richard Daugird
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Someone should make a cartoon, explaining amps, volts, watts, capacitors, transformers, diodes, etc., in terms simple enough to be understood by a child (or 50 year old dummy).

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 Posted: Fri Nov 10th, 2017 08:09 pm
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Steve Stephens
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Here's an easy way to be able to play with a variac without really needing to understand much.   An old and quality US made Powerstat with a three prong adapter to allow a Kill-A-Watt meter to be plugged directly into the variac.

Add an old power strip, here I have opened it up and soldered a bridge rectifier to the last socket (with red tape to identify).   Now I can run any fans, AC or DC that I am likely to have including battery fans down to 1.5 volts DC or lower.   I know the output voltage, current, etc. from the Kill-A-Watt meter.   No wiring needed.
Mostly I use the variac to reduce the voltage to the fan for slower running.   I have even had my 220 volt DC Peerless bipolar fan running nicely but slowly on this setup with the knob turned up to 135 volts approximately.





Last edited on Fri Nov 10th, 2017 08:11 pm by Steve Stephens

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 Posted: Fri Nov 10th, 2017 08:46 pm
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Richard Daugird
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Thanks Steve, I just ordered one of those Kill A Watt meters from Amazon(I declined the $523.09 installation, however :wondering:). Does anyone offer a Kill A Watt type meter that plugs into 20 or 30 amp 220? Google didn't find me one.
I did buy a few Variacs from eBay ready to go, coming next week or so, but I have this one now and I want to play with it. Without making sparks, hopefully! :dude:

Last edited on Fri Nov 10th, 2017 08:48 pm by Richard Daugird

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 Posted: Fri Nov 10th, 2017 08:51 pm
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Jim Kovar
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Richard Daugird wrote: Someone should make a cartoon, explaining amps, volts, watts, capacitors, transformers, diodes, etc., in terms simple enough to be understood by a child (or 50 year old dummy).

The essence of Ohm's law...


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 Posted: Sat Nov 11th, 2017 01:55 am
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Richard Daugird
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Awesome! It works. I have a 5 speed AOU, also a three speed Vortalex what speed should I run them on when hooked to the Variac?

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 Posted: Sat Nov 11th, 2017 02:09 am
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Richard Daugird
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Also, this is a 2.5 amp. Can I run the AOU or Vortalex?

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 Posted: Sat Nov 11th, 2017 02:12 am
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David Allen
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Richard Daugird wrote: Also, this is a 2.5 amp. Can I run the AOU or Vortalex?
Easily!  AOU and Vortalex use about 1 to 1.5 amps.

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 Posted: Sat Nov 11th, 2017 02:15 am
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Steve Stephens
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Richard Daugird wrote:  I have a 5 speed AOU...How can that be?

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 Posted: Sat Nov 11th, 2017 02:17 am
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Richard Daugird
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Oops. AO.

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 Posted: Sat Nov 11th, 2017 02:20 am
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Richard Daugird
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Richard Daugird
wrote:
Three speed. I admitted I’m dumb

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 Posted: Sat Nov 11th, 2017 02:20 am
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Richard Daugird
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Anyway should I run them on high low medium?

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 Posted: Sat Nov 11th, 2017 04:11 am
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Steve Stephens
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When running on a variac always run on the high speed.   You said you had a 5 speed AOU.   No such critter and no such critter as a 5 speed AO either.   They are all three speeds.

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 Posted: Sat Nov 11th, 2017 08:54 am
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Richard Daugird
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Thanks Steve. Yes three speed I don’t know what the H#ll I was thinking when I said that

Last edited on Sat Nov 11th, 2017 08:57 am by Richard Daugird

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 Posted: Sat Nov 11th, 2017 09:24 am
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Richard Daugird
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All you guys are great. Thanks for the help

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 Posted: Sun Nov 12th, 2017 12:32 am
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Levi Mevis
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Maybe you were thinking of a Pancake Richard? Because the Pancakes were 5 speed fans, so were the early Centurys.

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 Posted: Sun Nov 12th, 2017 12:35 am
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Steve Stephens
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Levi Mevis wrote: ...the Pancakes were 5 speed fans,...And many GE pancakes were two speed and a few were a single (slow) speed.  5 speeds from 1902 onwards though.

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 Posted: Sun Nov 12th, 2017 12:38 am
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Levi Mevis
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That's what I was referring to. 

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