"Harold and Susan Vordos" wrote in message
...

"Pete C." wrote in message
...


If you've got individual 50KW loads you may well be big enough to have
benefited from 480V service.

Again, a judgment call. I have one device with that load. Why would I
pay for 480 service, add an additional panel, then transform for
everything
else? Personally, I think I made some excellent choices. Everything I
have
runs as it should, and I haven't filled the shop with unnecessary
transformers. Idling current alone would have been expensive in the long
haul had I chosen that path. I have only one machine that *requires* 480
volts, a German made universal cylindrical grinder, which cannot be
strapped
for 240 volts, or anything within reason. The only time the
transformer
will be energized is when I use the machine. There will be no idling
consumption otherwise, so I won't be paying for making heat. Regardless
of
your opinion, I feel I've done a damned good job of addressing the
problems
at hand. Your bias against delta service seems to be a much greater
stumbling block for you than my choices are for me. Very strange, Pete.
However, I think if you visited my shop and observed how nicely it all has
come together, I think you might find yourself agreeing that I did the
right
thing. :-)

Well since you are already running a separate service for the single phase,
the 480 would have been the best for you. You don't need any transformers
for the 480 service and you haven't mentioned any 3 phase equipment that
requires 240 volts only. Also if you really have 75 amps of florescent
lights (That's TONS of amps for lighting. Do you use sun glasses in side??
:-) you could have run all that from a 20 amp 277 breaker if you had a 480
wye setup! Much cheaper for the wire on the 50kw load on the furnace and
smaller contactors and stuff on all other wires too....

William....




Harold