On Sun, 13 Jul 2003 18:42:32 GMT, Don Murray wrote:
Gary Coffman wrote:


Nope, you took that one out of a different context. I'm talking about 208 delta
there. Your power company may still support it for new work, but none of the
ones I know will (though they continue to support it in old work). They want
to supply 480 wye instead. It saves them money via smaller cheaper transformers.
In a stretched out facility it saves you money too, in reduced copper costs.

Gary

Gary,

I don't think I took anything out of context, I am going to cut and paste the
paragraph from your original post so you can see why I thought you were talking about
208 wye.

"Note you probably don't want to change to 4 wire wye service.
That would give you 120 volts to neutral from any leg, but the
leg to leg 3 ph voltage would drop to 208. That would require
rewiring all your 3 ph motors for 208 instead of 240. This was
found a lot in older installations, but most power companies
don't want to provide this any more."

I've never heard of a 208 delta, other than the high leg on a 240 bank.

I misspoke (miswrote), I meant 208 wye.

Gary