This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

Maximum Demand / ENA / EV Help!

Hello all,


This evenings issue relates to an EV charger install.

The supply cut out is labelled 60/80 amp so I called the DNO and asked if this could be uprated to 100 amp.

They have sent me the ENA EV application form which asks for the Maximum Demand including the new equipment.

The problem I have is the existing circuits are:


32A - 7.2 kW shower 

40A - 8.2 kW shower

32A - Ring main

32A - 7.9 kw cooker

6A - lighting

6A - lighting

6A - security


Additional 32A for EV charger


So even with diversity I'm way over 100A, obviously in reality the diversity calculations are not appropriate as the client has never blown the cut out.

The smaller shower is not currently in use although they want to replace it for another one, I have told them this may not be possible.

The EV charger will have load management but I still need to put a figure on the ENA form....


Help appriciated :)
Parents
  • Former Community Member
    0 Former Community Member
    wallywombat:

    As far as I'm aware, smart meters and chargers don't currently do this, and there doesn't seem to be any immediate plan to make it so.


    Apparently French smart meters have a standardised communications bus for this kind of thing. Where a UK demand-managed charger (or heatpump, etc.) might have a CT around the incomer a French one has a data connection to the meter.


Reply
  • Former Community Member
    0 Former Community Member
    wallywombat:

    As far as I'm aware, smart meters and chargers don't currently do this, and there doesn't seem to be any immediate plan to make it so.


    Apparently French smart meters have a standardised communications bus for this kind of thing. Where a UK demand-managed charger (or heatpump, etc.) might have a CT around the incomer a French one has a data connection to the meter.


Children
No Data