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EV install on a TT system - DNO PME?

Former Community Member
Former Community Member

Hi, new to this forum.

These might be obvious questions but I can't find an answer to it. 

Background.

A domestic house has a TT supply, has had a CU changed in 2019 but the new owners have no paperwork.

I can find no evidence of an earth rod anywhere and all the bonding cables go to the gas/water supplies. I did a quick Zs at the board = 2.9ohms. 

How do I know if the installation has been PME'd on the pole? (overhead wires)

Second part is - they want an EV charger installed that they brought with them from their old house. It will require TT, but as this property is TT it shouldn't need to have a separate rod.

If the installation is  a PME'd TT I would assume I would need to TT the EV?

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    AJJewsbury: 
     

    I never use green and yellow as a live conductor, sleeved or not.

    Probably no riskier than over-sleeving a ‘live’ colour with G/Y and using as a c.p.c. …. just that the danger comes from mistakes at the opposite end of the cable.

        - Andy.

    I was thinking of 514.4.2 Mr. J.

    Z.

Reply
  • 0

    AJJewsbury: 
     

    I never use green and yellow as a live conductor, sleeved or not.

    Probably no riskier than over-sleeving a ‘live’ colour with G/Y and using as a c.p.c. …. just that the danger comes from mistakes at the opposite end of the cable.

        - Andy.

    I was thinking of 514.4.2 Mr. J.

    Z.

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