Test button on RCCB not working

paulroome · 11 Sep 2009

I've fitted a small Consumer Unit in my shed. It has an RCCB in it, which doesn't trip when I press the test button.

I've wired it as follows

At the top of RCCB
Terminal 1 =. Live Line
Terminal 3 =. Neutral Line

At the bottom of the RCCB there is
Terminal 2 = Buzz Bar
Terminal 4 = Neutral link to conector

Do you think the RCCB is faulty, or have missed something?

Thanks,

Paul.

rebuke · 11 Sep 2009

Terminal 1-4 doesn't help unless we know what the RCCB is - a picture may help?

If it doesn't trip when the test button is pushed, either it's been wired wrong, or it's faulty (could be somethign as simple as a mechanical problem with the button, or could just be totally dead). While you could test it using a proper RCD tester (as I assume you will be doing since you've fitted this new) then that would show whether it's totally dead - it isn't worth it in this case - if the test button doesn't work, and you're sure the wiring is correct, then replace it...

ban-all-sheds · 11 Sep 2009

paulroome said:
I've fitted a small Consumer Unit in my shed. It has an RCCB in it, which doesn't trip when I press the test button.

I'm a bit reluctant to ask this, but....

you have connected the supply to the CU, haven't you?

kai · 11 Sep 2009

The RCD Test button will NOT work, unless the incoming supply is energised! (Think what powers the test button circuitry!)

securespark · 12 Sep 2009

Do you think he's connected it in yet?

ban-all-sheds · 12 Sep 2009

I think it's possible that someone with insufficient knowledge might think that it was worthwhile caution to check that the RCD worked before connecting the supply....

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Test button on RCCB not working

paulroome

rebuke

ban-all-sheds

kai

securespark

ban-all-sheds

DIYnot Local

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