Help on :EV charger install check - on detached garage
Discussion
The only way to be confident of the potential cost of anything thats not completely standard (ie; the charger position is to be wall mounted on the house within 5m of an external meter box or within 5m of an up to date metal consumer unit mounted on the external wall) is to get an installer in to price it. I have an EV and had my charger installed 12 months ago so just going off that experience.
The two I asked - one came out and the other asked for multiple photos. I wanted something slightly unusual as my consumer unit, although fairly new, is on an inside wall inside the house and I didn't want an additional mini CS mounted externally.
I would suggest you contact local electricians who advertise 'EV charger installation' as part of their services. The power supply companies may have a special offer from time to time but as soon as you want something non standard its all a problem.
I would suggest you contact local electricians who advertise 'EV charger installation' as part of their services. The power supply companies may have a special offer from time to time but as soon as you want something non standard its all a problem.
Edited by Mark V GTD on Monday 16th February 01:14
Definitely get a local installer or electrician to come out and quote. Sounds like you are going to need a buried cable. A local guy will probably know someone who will dig the trench etc., or at least spec the job so you can get it dug yourself. Can't see any of the "fixed price" installers wanting to touch a job like that.
clockworks said:
Definitely get a local installer or electrician to come out and quote. Sounds like you are going to need a buried cable. A local guy will probably know someone who will dig the trench etc., or at least spec the job so you can get it dug yourself. Can't see any of the "fixed price" installers wanting to touch a job like that.
Maybe even the OP could lift the paving slabs and a 400mm deep trench ready for the sparky.celica88 said:
Yes there s electric but I m unsure on feed type or connector box.
If you've already got a supply, your first step should be to find out what it's rated for (amps). Breaker size, cable size and length, etc.If you've got proper sockets in there (not just lights) and it's got a sub consumer unit that's up to spec, you should be able to get a charger of some description.
I think most "proper" chargers can be "de-rated" to run at less than the full 7.something KW to make them OK to run on a lower capacity supply.
My charger is on a sub board, fed with a 6mm armoured cable from the main consumer unit via a 50A breaker. Only a short run, so that's fine.
Heatpump and backup immersion fed from the same board.
When I had a house battery wired up to the same board, the total load with everything on max could go just over 50A, so I "de-rated" the Zappi charger to 5KW, and set the battery Inverter to 4KW daytime, 3KW night-time. (Immersion set to only come on at night). Heatpump is 2KW maximum, and goes idle if immersion is needed. Max load 45A to play it safe.
A good sparky should be able to figure out what's what, and advise you of the best way forward.
clockworks said:
celica88 said:
Yes there s electric but I m unsure on feed type or connector box.
If you've already got a supply, your first step should be to find out what it's rated for (amps). Breaker size, cable size and length, etc.If you've got proper sockets in there (not just lights) and it's got a sub consumer unit that's up to spec, you should be able to get a charger of some description.
I think most "proper" chargers can be "de-rated" to run at less than the full 7.something KW to make them OK to run on a lower capacity supply.
My charger is on a sub board, fed with a 6mm armoured cable from the main consumer unit via a 50A breaker. Only a short run, so that's fine.
Heatpump and backup immersion fed from the same board.
When I had a house battery wired up to the same board, the total load with everything on max could go just over 50A, so I "de-rated" the Zappi charger to 5KW, and set the battery Inverter to 4KW daytime, 3KW night-time. (Immersion set to only come on at night). Heatpump is 2KW maximum, and goes idle if immersion is needed. Max load 45A to play it safe.
A good sparky should be able to figure out what's what, and advise you of the best way forward.
The main household fuse often needs to be 80A or 100A, so simply requested an upgrade from your DNO.
Typical EV consumer units for 7.4kW electric vehicle charging have some like the following A Type 2 SPD, 63A RCCB, 40A MCB and 100A mains switch.
ashenfie said:
I think you have your heat pump numbers confused. Heat pumps in the UK generally require a dedicated electrical circuit with a 16A, 25A, or 32A Type B or C breaker (MCB/RCBO), depending on the make and model.
The main household fuse often needs to be 80A or 100A, so simply requested an upgrade from your DNO.
Typical EV consumer units for 7.4kW electric vehicle charging have some like the following A Type 2 SPD, 63A RCCB, 40A MCB and 100A mains switch.
Not sure what you mean by "numbers confused"?The main household fuse often needs to be 80A or 100A, so simply requested an upgrade from your DNO.
Typical EV consumer units for 7.4kW electric vehicle charging have some like the following A Type 2 SPD, 63A RCCB, 40A MCB and 100A mains switch.
Heatpump and Zappi were installed at the same time, new sub CU in the garage run from the main CU.The battery and 5KW inverter were added by another company, using a spare way on the new garage CU. CT clamps for Zappi and inverter are on the meter tails.
CU has an SPD. Zappi and inverter are on 32A breakers, heatpump is on a 20A.
It's only a 6KW heatpump, so max load is a little over 2KW.
Main fuse is labelled 100A.
I've got Shelly EMs monitoring everything. Max load on the sub board has been a shade over 9KW with everything running as configured.
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