I need a 60Hz, 240V to 220V transformer to power some ac servos. I found this transformer, supposedly rated for 3kVa. Fortunately I need considerably less than 3kVa and I suppose this thing might actually deliver 3kVa for short spurts, but it looks grossly overrated by CSA standards.
Salient points:
1) Input power cord (120V in) uses 1.5mm^2 (AWG16ish), not sure what UL/CSA lets manufacturers get away with for chassis wiring, but I'm sure this would not fly.
2) The winding on the transformer measured to be 0.0625" so appears to be close to AWG14
3) the circuit breaker (looks like a circuit breaker, might just be a switch) is rated for 20A
4) The stickers on the back claim 13.6A out at 220V. that's close enough to 3kVA, if it actually does that, input current would be close to 25A
5) no ground.
I guess I'm going to load test it, what do you think an acceptable transformer temperature is as measured on outer windings?
Comments welcome.