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White Cable

Former Community Member
Former Community Member

I'm working on the design for the extension of a school and the electrical contractor says that the existing building supply is the only original cable in use and has a white core that dates it pre 1967.

Any ideas of what a white core cable is (other than MICC)?

Parents
  • 0

    The white core in the cable will almost certainly be second phase.

    You need to ask him if it is plastic, or paper in lead (and fit for continued use) or rubber or rubber in lead (and therefore needs to scrapped)

    Before 2004 when we introduced the current Brown, black, grey for 3 phases (blue neutral) 

    we had

    Red Yellow Blue (black for neutral) from late 1960s to  2004

    before that

    Red White and blue (black for neutral) green or bare earth.

    and pre war you may have found 

    Red White and Green for the 3 phases, and either brown or black for earth.  There is not a lot of this about, but it is a dangerous confusion.

    (exact years are not exactly consistent - and early wiring had local variations)

    Mike.

Reply
  • 0

    The white core in the cable will almost certainly be second phase.

    You need to ask him if it is plastic, or paper in lead (and fit for continued use) or rubber or rubber in lead (and therefore needs to scrapped)

    Before 2004 when we introduced the current Brown, black, grey for 3 phases (blue neutral) 

    we had

    Red Yellow Blue (black for neutral) from late 1960s to  2004

    before that

    Red White and blue (black for neutral) green or bare earth.

    and pre war you may have found 

    Red White and Green for the 3 phases, and either brown or black for earth.  There is not a lot of this about, but it is a dangerous confusion.

    (exact years are not exactly consistent - and early wiring had local variations)

    Mike.

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