Seems like I stirred a bit of hornets nest...
Andrew, I agree with you. No probes with tradies charging, they have high overheads like insurance, fuel, super, accountants fees etc, but the Govt seems to want a cut at every step.
As for my original problem, I will convert one of the leads (I was given two leads from power point to transformer by the seller) into a three pin plug $2.33 from bunnings. The other I will keep as is.
Yes, I will void any warranty, house insurance, life insurance etc, but there are no laws against stupidity
(and never underestimate the brilliance of fools in fool-proof systems...)
Might even post some photos when done.
Bo