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EV Points

New apartment block of 12 units with 18 associated parking spaces. The contractor has brought a 80A TPN supply from the intake position to a new DB in fibreglass housing mounted on a steel frame near the car park. Ducting has been laid to 9 points to provide for twin sockets that will cover all spaces if necessary. The intention is to provide a DLM (dynamic load management) system such that the 80A per phase will never be exceeded and priority can be set. The units will have RFID that will allow billing. 
Part S does not apply, but suppose it did, also suppose that at least 12 points were required, would this be an acceptable arrangement given that each charge point is supposed to provide at least 7Kw? 

by the way, using IPad, I could not get the cursor back to correct or modify what I have just written! 

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  • I would consider it just acceptable. EACH charge point should be able to provide 7 kw, but I am not convinced that ALL need to be able to supply 7 kw at the same time. Even if every resident obtains an EV are they all going to need a 7 kw charge at the same time. ? Remember that many of these vehicles will see little use and be charged in an hour or two.

    I would prefer a 100 amp three phase supply as that will permit of simultaneous us of three 7 kw chargers on each phase. 

  • I agree with broadgage. Each EVCP should be capable of supplying 7 kW, but not necessarily all together.

    In fact the Regulations do not specify 7 kW. They say (my emphasis):

    "Minimum standards of an electric vehicle charge point

    44J.(1) For the purposes of this Part and Part S of Schedule 1, an electric vehicle charge point must meet the following minimum standards.

    (2) It must be capable of providing a reasonable power output for each parking space for which it is intended to be used.

    (3) It must be run on a dedicated circuit.

    (4) It must be compatible with all vehicles which may require access to it."

    In any event, the AP is not determinative:

    "Complying with the guidance in the approved documents does not guarantee that building work com- plies with the requirements of the regulations – the approved documents cannot cover all circumstanc- es. Those responsible for building work must consider whether following the guidance in the approved documents is likely to meet the requirements in the particular circumstances of their case.

    There may be other ways to comply with the requirements than those described in an approved doc- ument. If those responsible for meeting the requirements prefer to meet a requirement in some other way than described in an approved document, they should seek to agree this with the relevant building control body at an early stage."

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  • I agree with broadgage. Each EVCP should be capable of supplying 7 kW, but not necessarily all together.

    In fact the Regulations do not specify 7 kW. They say (my emphasis):

    "Minimum standards of an electric vehicle charge point

    44J.(1) For the purposes of this Part and Part S of Schedule 1, an electric vehicle charge point must meet the following minimum standards.

    (2) It must be capable of providing a reasonable power output for each parking space for which it is intended to be used.

    (3) It must be run on a dedicated circuit.

    (4) It must be compatible with all vehicles which may require access to it."

    In any event, the AP is not determinative:

    "Complying with the guidance in the approved documents does not guarantee that building work com- plies with the requirements of the regulations – the approved documents cannot cover all circumstanc- es. Those responsible for building work must consider whether following the guidance in the approved documents is likely to meet the requirements in the particular circumstances of their case.

    There may be other ways to comply with the requirements than those described in an approved doc- ument. If those responsible for meeting the requirements prefer to meet a requirement in some other way than described in an approved document, they should seek to agree this with the relevant building control body at an early stage."

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