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Have you got an old MEM board with a long lever?
Some older RCD's (and all the above-mentioned MEM RCD's that I have encountered) will not reset without turning off all MCB's first.
You can have your RCD tested to make sure it is within its operating parameters. This is best done with the RCD in isolation.
Some older RCD's (and all the above-mentioned MEM RCD's that I have encountered) will not reset without turning off all MCB's first.
You can have your RCD tested to make sure it is within its operating parameters. This is best done with the RCD in isolation.
You need to notify to be able to test?Ps you can do it DIY but the testing would be impossible without the right tool. You'd really need to notify building control.