I just registered myself, as TrumpyNZ.
Seems like a large number of questions there don't have a lot of the right advice.
Also Paul, we have a thing down here called Prescribed Electrical work.
If work isn't prescribed in the Regulations, you don't have to be qualified to do it.
But, on the same side of the coin, let's not make a misnomer of this, all new wiring work is required to be connected to a source of energy, by a registered Electrician or Inspector, as the case may be.