Australian fixed wiring colour code is as follows: Single phase: Red = Line/Active/Phase/Hot Black = Neutral Green/yellow = Earth/ground
3 Phase: Red = L1 White = L2 Blue = L3 Black = Neutral Green/yellow = Earth
I assume the same code applies in NZ, but you would need to check with Trumpy.
In older 3 phase Australian installations L2 is coloured yellow (like current UK standard), I don't know when the change to white was made. Also green was used as earth on older installations. Hope this is of help.
#133881 - 02/23/0301:37 PMRe: International Wire Colour Codes
I have posted this information before but for the record South African fixed wiring is exactly as described for Australia by Dave.
Flex for single phase is the brown (live), blue (neutral), green/yellow (earth). As for three phase flex, I am not sure.
A note on conduit wiring. Black is always neutral and earth is either green or bare. Red is usually phase but I have seen brown used. For switched feeds and travellers, I have seen used brown, blue, white, yellow and pink.
#133882 - 02/24/0312:01 AMRe: International Wire Colour Codes
One more addition to this endless thread: I got some info from a Swiss sparky on their color coding. Current Swiss color coding: Phases: all colors but blue and yellow-green Neutral: Blue Ground: Yellow-green. Old colors: Phases: all colors but yellow and yellow-red Neutral: Yellow Ground: Yellow-red Swiss, is that correct?
Old Italian color coding: Whatever you feel like. Think a pink phase with blue polka dots is beautiful? Go for it! Common agreement seems to be: L red, N green, Ground yellow.
#133884 - 05/07/0309:28 AMRe: International Wire Colour Codes
I got another, more detailed information on swiss color coding. Until about 1970 Phases red (R), green (S) and dark blue (T). N yellow. PE yellow-red until the 1950ies, later yellow-green. Phase after fuse often red. Switched phase often blue or green. Got you the following colors to a light fixture: Green, yellow-green and yellow. 3way travelers often white. In the ca. 90ies introduction of blue neutral, ban of blue phase. Yellow seems to have died out. Phases red, black and white, after fuse often black. Switched neutral whatever, for example green, travelers green as well.
#133886 - 05/09/0305:55 AMRe: International Wire Colour Codes