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3 phase colour schemes here dropped black quite a while ago so it doesn't cause too much confusion.

I'm trying to remember the international color-codes thread from a while back without searching right through it. Didn't you change to brown/red/yellow phases so that you could start useing blue as a neutral?

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Black is a historic thing. Germany always used to have a black #1 phase, whereas Austria had cables with brown # 1 phase.

I've seen some European appliances from the 1970s (maybe French and Italian) in the which the appliance cords had black and blue rather than brown and blue (or at least very, very, very dark brown so that it was almost black anyway).

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"Do they make bell-wire to match these turquoise color tiles? I'm fixing up a 3kw electric fire in the shower stall."
No, but if you use orange "Fire-Glow" tiles instead, the bell wire will soon match it. [Linked Image]