Re: Using dual 120V for 240?

• To: tesla-at-pupman-dot-com
• Subject: Re: Using dual 120V for 240?
• From: "Richard &/or Susan Silvera" <rgsilvera-at-earthlink-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Mon, 05 Jul 1999 18:29:47 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Sunday, July 04, 1999 11:56 AM
Subject: Using dual 120V for 240?


>Original Poster: "Coiler" <mycroft-at-access1-dot-net>
>
>I am curious.. is it possible to gang a pair of 120V variacs to
>control 240? I assume they would be wired in series, with the center
>leg shared between, basically, one on each side of the neutral.
>
>Would this work? and if so, what are the gotchas?
>[I see lots of monster 120V variacs on E-bay, but no 240, so I am
>trying to be inventive here.]
>
>Michael Baumann
>Coiler, Homebrewer, Nerd. mycroft-at-access1-dot-net
>
Yes, this works fine.
I purchssed a 120V 3 phase 45 amp variac.
I removed one unit, then wired the two in series. The output is off the two
wipers.
You do not need to, but may connect the neutral between the two variacs.

Richard Silvera
http://geocities-dot-com/CapeCanaveral/Launchpad/6827/

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