[Amps] Re: Step-start calculation

[exray at bellsouth.net]

Jeff'
The magnitude of the current depends a great deal on the transformer type....for instance a fair size torroid, say 1 or 2 KVA will absolutely require some form of current limiting or you WILL trip the breaker at turn-on!!!

As a matter of fact most x-ray machines of any size 'remember' the polarity of the applied voltage so they always start with the opposite just to prevent this kind of occurrence.

George W4IW