>>
>>>
>>> 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.
>
>208 three phase isn't delta. It's wye.
>
>Harold
>
Are you sure? Perhaps it is just that way where you live.
Southern California distributes 208 ungrounded delta configuration in the industrial park I was in at my last job.