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Doctorsparks
I'm stumped, fitted new cu in one bed house today RCD would not trip using test button or on test. The only time it trips is when a load is put onto socket circuit, or the socket on the cooker isolator, no faults have been found during testing.
Its a TNC-S system ze of 0.16ohms IR of >999 on all circuits, zs good on all circuits.
i thought it may have been a defective RCD so I replaced it but no join? I have tested both RCD's on my board when I got home both worked!
Any ideas?
Its a TNC-S system ze of 0.16ohms IR of >999 on all circuits, zs good on all circuits.
i thought it may have been a defective RCD so I replaced it but no join? I have tested both RCD's on my board when I got home both worked!
Any ideas?