OK, thanks for that. It's sat running in correctly phased parallel configuration at the moment. Via a voltage divider of 5 megohm my basic AC voltmeter is giving 0.072 to 0.073 volts, which I read as circa 3600V AC. It draws minimal primary current and seems happy enough with no load. That;s with it fed with 230 volts AC 50 Hz.
Peter G3RZP: Thanks for the reply. I often run a serious single phase TIG welder off the supply here, and it draws about 45 Amps. I haven't measured the sag, but the supply doesn't seem to sag dramatically. I think I caused the demise of a very old pole transformer when we moved in, and it was replaced by a much bigger, brand new one. We are no more than 250 meters from it. I did enquire as to havine 3 phase put in but the cost was prohibitive as there was a road in the way
To be honest I have no intention of running it near full capability, but it's a joint venture with a guy convalescing in the UK who is actually American, and he may well take it back with him after he recovers from his bike accident. He tends to like things big fast and powerful
The thing I don't quite get is people seem to be suggesting a centre tap and full wave rectifier is the way to go, but I seem to be reading that if the transformer works happily with the two secondary windings in parallel, with a full wave bridge rectifier, it makes more efficient use of the mains cycle? Thanks for your input, much appreciated.
