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Home > Forums > Engineering Codes, Standards & Certifications > Engineering Codes, Standards & Certifications > IEC (electrotechnical) Code Issues Forum

3 phase color codes in ireland

Read More Threads Like This One

ahartley (Electrical)

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.

http://www.theiet.org/publishing/wiring-regulations/colour/

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.

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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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