OK Paul,
Regulation 44 :(Of 1935)
Quote
Each conductor of a poly-phase system shall be numbered at either end of the said conductors, this shall be as a label or as some other indelible method.
It shall be contrary to the Regulations to paint the conductor insulation.
The manufacturer shall provide the marking method
One thing that I have learned guys, is the fact that I love reading old Regulations.
The oldest we have here is the 1915 (First Institution) although Reefton (do a Google on that) was the first place in the Southern Hemisphere to have a reticulated power supply back in 1890 (I think).
I had to get out and do some work though, I could have read for hours though.

[This message has been edited by Trumpy (edited 06-24-2005).]