Discuss Which RCD to use for EV charging point? in the Electrical Forum area at ElectriciansForums.net

happyhippydad

happyhippydad

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I don't fit EV charging points as I am not OLEV registered. However, I am fitting a Tesla EV charger soon for a friend as I owe him a favour.

The Tesla spec asks for a Type B RCD or Type A-EV RCD.

Looking at Regulation 722.531.2.101 this sates the same as above.

The regulation states a Type A RCD AND appropriate equipment that provides disconnection of the supply in the case of DC fault current above 6mA.

Is this 'equipment' located in specific Type A RCD, or in certain EVCP's, or a seperate piece of equipment?

The tesla wall charger spec says it does not measure DC current leaking.

It sounds easier just to go for a type B RCD but it is difficult to locate one, could any EVCP installers send a link?

Thanks :)
 
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plugsandsparks

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Just order one from wholesalers, Doepke appear to be the most used.
BTW TP ones arnt cheap >£400 ... eek
 
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pc1966

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Just order one from wholesalers, Doepke appear to be the most used.
BTW TP ones arnt cheap >£400 ... eek
Doepke have good technical documents as well.

True it is not cheap, but then having 3-phase domestic supply and buying a Tesla car is not usually done on a tight budget!
Post automatically merged:

Doepke also do RCBO with 'type B' DC sensitive trip as well.
 
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plugsandsparks

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Charger is cheap enough and very well made, i often fit one at home and one at work.
Post automatically merged:

Last time i checked tesla chargers are not OLEV approved anyway.
 
happyhippydad

happyhippydad

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Doepke have good technical documents as well.

True it is not cheap, but then having 3-phase domestic supply and buying a Tesla car is not usually done on a tight budget!
Post automatically merged:

Doepke also do RCBO with 'type B' DC sensitive trip as well.
Could I ask why you've mentioned 3 phase supply @pc1966 ? My friends supply is single phase. Are the tesla chargers only compatible with 3 phase, I wouldn't have thought so?
 
richy3333

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The DC RCD is in the charger usually. You'll also need specific test equipment to carry out the full compliment of tests and ensure it all works as it should.

Look on the tube, I think smug Jordan has done a video on fitting a Tesla charger
 
happyhippydad

happyhippydad

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@plugsandsparks @pc1966
Any chance of a link to the exact doepke type b rcd? I'm still struggling to locate it on the net :blush:

I simply cant find any single phase type B RCD's!!
 
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happyhippydad

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The DC RCD is in the charger usually. You'll also need specific test equipment to carry out the full compliment of tests and ensure it all works as it should.

Look on the tube, I think smug Jordan has done a video on fitting a Tesla charger
The tesla spec does say that the tesla charger does not detect DC leakage.
 
freddo

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The tesla spec does say that the tesla charger does not detect DC leakage.
Interesting, one Tesla charger manual I looked at last year seemed to have all the required RCD protection built into the charger, the fault lights would even display exactly the fault condition that caused it to shut down. I don't get involved with EV chargers as it seems like a pain to meet all the installation requirements.
 
Risteard

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Doepke also do RCBO with 'type B' DC sensitive trip as well.
Interesting. I've never come across an RCBO with Type B RCD characteristics - only RCCBs. Do you have a link to these devices?
 

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