There are plug-through (doubt whether that's the right word) RCDs available, an example (link):
https://www.ryness.co.uk/13-amp-30ma-plug-in-rcd-adaptor-white
In my minds eye I can see a Residual Current Meter looking something like (apologies for shadowy photo):
but I can't find anything, am I throwing wrong keywords at Mr. Google?
What I can find are clamp meters, example (link):
https://cpc.farnell.com/multicomp-pro/mp780050/mini-leakage-current-tester/dp/IN08364?st=ac leakage
It's my belief that to use such a clamp meter I'd have to knock up a shortish extension lead in which the earth wire is in a separate cable to the one which contains the live/line and neutral wires, is this right?
Background: A friend has a 100mA Current Operated Earth Leakage Circuit Breaker (does the name give away its age?) which started tripping and which cuts all the electric to her house. It seems likely that its caused by the boiler but I kept on impressing on her (what I believe I've gleaned from other threads) that the boiler might be just the final straw and that other device(s) might also be faulty. The boiler is plugged into a normal 13A socket (which has been used successfully to boil a kettle) and so it seemed it would be easy to plug in a Residual Current Meter and see what it showed.
https://www.ryness.co.uk/13-amp-30ma-plug-in-rcd-adaptor-white
In my minds eye I can see a Residual Current Meter looking something like (apologies for shadowy photo):
but I can't find anything, am I throwing wrong keywords at Mr. Google?
What I can find are clamp meters, example (link):
https://cpc.farnell.com/multicomp-pro/mp780050/mini-leakage-current-tester/dp/IN08364?st=ac leakage
It's my belief that to use such a clamp meter I'd have to knock up a shortish extension lead in which the earth wire is in a separate cable to the one which contains the live/line and neutral wires, is this right?
Background: A friend has a 100mA Current Operated Earth Leakage Circuit Breaker (does the name give away its age?) which started tripping and which cuts all the electric to her house. It seems likely that its caused by the boiler but I kept on impressing on her (what I believe I've gleaned from other threads) that the boiler might be just the final straw and that other device(s) might also be faulty. The boiler is plugged into a normal 13A socket (which has been used successfully to boil a kettle) and so it seemed it would be easy to plug in a Residual Current Meter and see what it showed.