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EV Chargers with built in RCD and 537.2.2

Ian Cheek

I read 537.2.2, and wonder if this applies to our EV charge points which offer built in 30ma and 6ma DC RCD's. Im sure these RCD must be electronic in nature. 

Upstream is a traditional MCB, so the EV Charger could be isolated.

However looking at 411.3.2.1 it has the line "the protecticve device shall be suitable for isolation of at least the line conductor"

So as 411.3.2.1 uses the term isolation, and the RCD is a protective device, should the inbuilt RCD comply with 537.2.2?

I'll stop reading the regs and have a cup of T, Thank you for looking, and in advance of your advice.

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  • 0

    Isolation can be single pole in TN earthed installations, but not in TT earthed installations.

    Bearing that in mind, how can the EV charger be isolated for maintenance and repairs?

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  • 0

    Isolation can be single pole in TN earthed installations, but not in TT earthed installations.

    Bearing that in mind, how can the EV charger be isolated for maintenance and repairs?

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