Hi Both,
Thanks for the replies.
Mark,
it's not a typo, just my inability to express myself concisely!
I have a frequency meter, rated at 100v between 1 phase and neutral, this is where my readings come from, the ammeter only works on one of the phases, as does the volt meter. The rev counter is a home made device which picks up on 4 magnets on the camshaft retaining collar, via a Hall effect switch, powered by a 9v battery. A mate made it for me, electronics are pretty much beyond me!
Gary,
Yes, it's an SX 460 AVR, well that's what the label says...
There was a sticker inside the control box which I took the precaution of photographing before disturbing it to relocate the gauges. I've laminated it so it can carry on providing a permanent record on the machine.
It's nice to know that if I over load things in a fit of exuberance that it'll all shut down before the magic smoke escapes, it's a shame more things in my past haven't been so well protected!
I intend to fit a rotary switch in order that the ammeter serves all three phases, to help with (future) load balancing between the 3 phases, however am I correct in assuming that given the size of the gen head that if it all ends up on one phase I won't damage anything?
Thanks again,
Stef