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ahartley (Electrical) (OP)
27 Apr 09 13:23
could someone please tell me if there is such a code that states what colors you must use for three phase wiring. 380volt 3 phase. If so can you get around the code if both ends are  markee with lables that match your prints.
Hoxton (Electrical)
27 Apr 09 14:54
If you are in UK, or working to UK regs:

The proposed colours for the conductors of three-phase circuits are brown, black and grey with a blue neutral conductor, in place of the traditional red, yellow and blue with a black neutral. Again, the bi-colour green-and-yellow marking of protective conductors will remain unchanged.
dpc (Electrical)
27 Apr 09 19:17
Switching from a standard with a black hot wire to a black neutral?  That sounds like a fun transition.  


"The more the universe seems comprehensible, the more it also seems pointless." -- Steven Weinberg

ScottyUK (Electrical)
28 Apr 09 1:31
Look closely and you'll see the black and the blue actually swapped functions. An act of absolute bloody madness.

If we learn from our mistakes I'm getting a great education!

dpc (Electrical)
28 Apr 09 13:28
Is this an IEC thing or just the UK?   

"The more the universe seems comprehensible, the more it also seems pointless." -- Steven Weinberg

davidbeach (Electrical)
28 Apr 09 13:38
So, if there is one three-phase color code, how do you differentiate between systems of different voltage levels in the same building?
Hoxton (Electrical)
29 Apr 09 3:07
dpc... it is our beloved European Union!

david beach... by cable marking(tagging) not colour

I agree with scottyuk .... this is madness!

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