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Electricity Underground Ducting Colour

AncientMariner
What is the colour for electricity underground ducting for 400/230 volt supply cable?


Is it Black or Red?  If Red, when did it change from Black?

Thanks

Clive

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  • 0
    AFAIK, LV is black, HV is red. Hasn't changed as far as I've heard....

        - Andy.
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  • 0
    AFAIK, LV is black, HV is red. Hasn't changed as far as I've heard....

        - Andy.
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