On Sun, 05 Jul 2009 12:04:07 -0500, RoyJ
wrote:



Assuming a nominal 240VAC supply, 245V is in no way "not correct" -- it's only
about a 2% overvoltage.

And since there is likely no load in shop when the install was taking
place, the 245 would be a higher than normal reading.

But I question the use of "3phase" and "245 volts" in the OP question.
Around here, 245 volts would be perfectly normal for a single phase
circuit, very high for a "standard" 208/3 phase delta.

Can't say that i have ever heard of 208 V 3 phase delta sources. All
of the 208 V, 3 phase stuff i have seen has been 120/208 V, 3 phase
"Y". Wiring motors for 208 V, 3 phase delta i have seen though, they
typically also have taps for 240 V, 3 phase and other voltages as
well.