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RCD Not working with the test button

Johno12345

Hello all!

I have a circuit, 16a 3ph&e feeding a 16a socket and it has a stand-alone RCD after the isolator, before the socket - fairly normal I think.

The test button doesn't work on the RCD, its a 4 pole unit, nothing connected to the neutral, but looking at the little circuit diagram, it looks like the test button is connected between N and E

It does trip with a fault, but is this, a) normal, b) compliant?

Im not an electrician, just an enthusiastic amateur FM

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  • 0 in reply to Johno12345

    Yes, basically what that`s showing is A/ if there is a N connected then use it or B/ If N is not connected then link another phase to it - not forgetting to disconnect that link if you later supply an actual N connection to it. 

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