Discuss RCD trip time in the UK Electrical Forum area at ElectriciansForums.net
RCDs work by sensing a difference on current flow between L and N ( in your case hot and N). close to the threshold, they trip, as they see an imbalance., i.e when the current i 1 of the conductors leaks to earth (ground) in the event of a fault. the test button simulates earth leakage by putting a resistance across L and E.Never knew that. Thanks How does the science work for RCDs?
This is a link to a site sponsor doing a good deal on these type of testers.@Andy78: Big thanks, I needed that. How much does a tester like that cost?
That's a multifunction tester, also known as an installation tester, that performs all the tests required to verify safety.@Andy78: Big thanks, I needed that. How much does a tester like that cost?
Mostly interested in earth fault loop impedance and perspective fault current.
Might just get one. Are the cheap ones good? How will the tester tolerate 120 volts and line-line 230 volts?
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