On 2012-02-02, Brian Lawson wrote:
On Wed, 04 Jan 2012 22:27:16 -0600, Ignoramus8679
wrote:

I understand that there is a bit of fudge factors involved, but I want
to know, approximately what size motors (with a usual load, like a
compressor or a lathe) can I start with a 45 kVA transformer feeding it.

No soft start of course.

Thanks

Hey Iggy,

Hammond (one of the "better" transfomer makers)
say that their 45kVA 3phase transormer is good for :

125 amps @ 208VAC (= approx. 50hp )
108 amps @ 240VAC (= approx. 40hp )
54.2 amps @ 480VAC (= approx. 20hp )
43.4 amps @ 600VAC (= approx. 15hp )


Is that starting amps or running amps?

i