OP
sparky steve
Whilst a 220 volt centre tapped transformer is not within the whole idea of the original 110 VAC site transformer it should still be a safety device in that the supply is now 110 volts isolated from earth and this is what gives the safety factor and is the same as a shaver socket in the bathroom, as long as the transformer is a true dual winding unit. I once found a dentists chair where the light was low voltage but built into the chair was a massive auto transformer to power it! (scary stuff) However I digress, I do wonder if the regs have something to say about site transformers?
