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6mm flat twin NO earth?

D4G

So I came across an old cooker circuit fed from what I thought was 6mm T&E however it has no earth.  I didn't think it was a thing but it appears it is!

So how would the cooker have beed earthed?

Whilst on the subject of old cables, what were the sizes of eg 2.5mm twin and earth? it has the stranded conductors, is it still 2.5mm with 1.5mm CPC?

Parents
  • 0

    Twin cable without earth was common in the days of rubber insulation.

    PVC or polythene cables without an earth did exist but were rare. Plastic insulated cables started to come into general use in the early 1960s, but earthing of lighting circuits was not a requirement until 1968 IIRC. And enforcement was patchy for some years.

    A cooker wired in twin cable hopefully had either a separate earth wire or a connection to a water pipe. 

Reply
  • 0

    Twin cable without earth was common in the days of rubber insulation.

    PVC or polythene cables without an earth did exist but were rare. Plastic insulated cables started to come into general use in the early 1960s, but earthing of lighting circuits was not a requirement until 1968 IIRC. And enforcement was patchy for some years.

    A cooker wired in twin cable hopefully had either a separate earth wire or a connection to a water pipe. 

Children
  • 0 in reply to broadgage

    The CPC at the cooker switch is connected to something/somewhere as I get a Zs of 0.36 ohms

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