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Electrician understanding of Electrical Vehicle Charging installations

Jaymack

I note from my future assessment visit under notes, that the NiCEIC reserve the right to visit the location where an EVC installation has been installed. Methinks there may be concern on the quality of installations by their members whether future or not. I have enrolled on their onsite course which includes a copy of the IET Code of Practice - Edition 4. I did enrol since I was aware of the knowledge and other standards required by the installer. I have not carried out any of these such installations but I was asked to quote for one, so having seen what was involved w.r.t. earthing requirements and consultation with the supplier etc. I gave an initial quote of £50 for an initial survey etc. to this domestic property. I didn't get any response so I assume that the eventual contractor simply gave a quote. I am now concerned on the quality of such installations. Should it be made compulsory to inspect such installations by a competent authority before energisation?'

Jaymack        

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    I am am not convinced that every installation with Type AC RCDs warrants a C2 code on an EICR.

    However with built in RCD protection in EVSE it must be better to run a circuit to it without any RCD protection than it is to connect the circuit to an existing Type AC RCD in a consumer unit and must definitely be better than installing a new Type AC RCD for the circuit.

    But then the amount of work and cost may increase, because it’s no longer possible to just connect the EVSE circuit into the existing consumer unit and a new additional consumer unit connected into the tails with a Henley block may be required with a main switch, a Surge Protection Device with a MCB as well as a RCD with a MCB or RCBO. Obviously that is all going to cost more than just putting a MCB costing less than a fiver into a spare way in an existing consumer unit with a Type AC RCD.

    I am not going to worry about connecting new electric showers to Type AC RCDs, but I would not consider connecting EVSE to one.

    Mind you, most PV inverters I see are connected through Type AC RCDs.

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  •  

    I am am not convinced that every installation with Type AC RCDs warrants a C2 code on an EICR.

    However with built in RCD protection in EVSE it must be better to run a circuit to it without any RCD protection than it is to connect the circuit to an existing Type AC RCD in a consumer unit and must definitely be better than installing a new Type AC RCD for the circuit.

    But then the amount of work and cost may increase, because it’s no longer possible to just connect the EVSE circuit into the existing consumer unit and a new additional consumer unit connected into the tails with a Henley block may be required with a main switch, a Surge Protection Device with a MCB as well as a RCD with a MCB or RCBO. Obviously that is all going to cost more than just putting a MCB costing less than a fiver into a spare way in an existing consumer unit with a Type AC RCD.

    I am not going to worry about connecting new electric showers to Type AC RCDs, but I would not consider connecting EVSE to one.

    Mind you, most PV inverters I see are connected through Type AC RCDs.

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  • in reply to Sparkingchip

    Not quite sure where you are going with this one. The EVCP needs its own RCD, which could be internal or even wired adjacent to it. However. if the supply is in soft cable buried < 50 mm deep, it may need to be protected for that reason alone.

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