You might also ask how I know the colours ;)
and before you jump to the wrong conclusion, I was a Telsta tech in an earlier life - some 30 years ago when it was the PMG :p
Same.
They are AC - there is no +ve or -neg :eek: But if you mean active & neutral - yes - red & black if old or brown & blue if new + green or yellow&green for earth.
Illegal to do yourself - get a sparkie.
