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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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    But at best the DNO could only tell you what kind of Earth terminal they have supplied, if any. They won't be able to tell you if the previous electrician decided not to use it and TT the installation instead (or forgot to connect an Earthing conductor…)

       - Andy.

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    But at best the DNO could only tell you what kind of Earth terminal they have supplied, if any. They won't be able to tell you if the previous electrician decided not to use it and TT the installation instead (or forgot to connect an Earthing conductor…)

       - Andy.

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