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Re: [Shop-talk] 130v/260v?

To: <shop-talk@Autox.Team.Net>
Subject: Re: [Shop-talk] 130v/260v?
From: "gordies garage" <mg_garage@comcast.net>
Date: Wed, 30 Mar 2011 16:32:06 -0400
I'd say that's unusually high, but not highly unusual.

Gordie B


>    I have been curious about this for a while, but unable to find an 
> answer online.  My house has standard residential AC electrical service, 
> 100a at a nominal 120v.  Whenever I put a meter on a circuit, though, I 
> always measure about 130v.  Similarly, on the double-pole breaker circuit 
> I just installed for my welder (nominally 240v) I measure ~264v.  I have 
> used at least three different (cheap) meters, all with similar results.
>
>    Is this highly unusual?  For a given resistance, 264v is going to 
> provide about 10% more current than the nominal standard on the 
> double-pole circuit.  Is this risky or problematic?  The single-pole 
> circuits have been in-place for years, with no apparent problems, but I 
> obviously don't want to blow up my Syncrowave.
>
>    Thanks.
>
> --
>  David Hillman
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