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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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    That's what I thought.  Certainly when we had our cut-out and meter moved to a built in meter box, besides the box, I was supplied with a hockey stick and a length of black ducting, this in 2002.  Some new houses up the road had red ducting installed for their 230 volt supply, this 2012, seemed strange since I have previously seen red ducting used for HV.

    A friend of mine has told me this evening that Scottish Power require red ducting even for replacing a single phase cable with a 3-phase cable when he was hoping to use the same black duct which is under about 7 inches of reinforced concrete....

    Clive


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  • 0
    That's what I thought.  Certainly when we had our cut-out and meter moved to a built in meter box, besides the box, I was supplied with a hockey stick and a length of black ducting, this in 2002.  Some new houses up the road had red ducting installed for their 230 volt supply, this 2012, seemed strange since I have previously seen red ducting used for HV.

    A friend of mine has told me this evening that Scottish Power require red ducting even for replacing a single phase cable with a 3-phase cable when he was hoping to use the same black duct which is under about 7 inches of reinforced concrete....

    Clive


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