What is the advantage of 208 compared to 120/240

in article 8oVjb.576232$Oz4.551851@rwcrnsc54, MainTech at Main_Tech snipped-for-privacy@insightbb.com wrote on 10/17/03 10:10 AM:

If the 480 VAC is three phase, as I would expect it to be, there is little down side. It requires no extra wires assuming that there is a considerable load. You will get three 120 V sources that could, if necessary provid 208 line to line. If you get a three phase transformer for the conversion, you might be able to save on transformer cost.

Bill

The 120/208 3ph-4w panel will give you better load balance. The 480/208v

How much is the total load of this panel? If it's almost trivial (100A or less) it might be worth it to scrimp, otherwise I'd expect the cost to be fairly close and you'll want to balance the load anyway.

Also, if you ever wish to install a 3 phase widget that doesn't come in a 277/480V version, you'll regret not having the 3 phase panel.

transformers?

Or if you have large motor loads, 3 phase becomes important.

Sincerely,

Donald L. Phillips, Jr., P.E. Worthington Engineering, Inc.

snipped-for-privacy@worthingtonNSengineering.com (remove NS to use the address)

MainTech

Only if you have three phase motors.

Regards,

John Phillips