Variations in voltage are pretty common around the USA.
Phil Ethier West Side Saint Paul Minnesota USA
1973 Triumph Stag LE22439UBW "uncle jack"
2004 Suburban 8.1
2005 Lotus Elise
2007 Saturn Ion 3 2.4
pethier [at] comcast [dot] net
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http://www.triumphtransamerica.org
http://www.mnautox.com
----- Original Message -----
> From: "David Hillman" <hillman@planet-torque.com>
> 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.
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