Had a boiler tripping the Rcd. With all parts disconnected. Ie pump, spark gen fan gas vlv etc etc.
1,The boiler was powered up via a fuse spur, now if I was to have all parts disconnected leaving just the Pcb in place and the main earth to the metal case the Rcd trips off. Now if I remove the earth from the case of the boiler it's fine. The Rcd does not trip.
2,Just so I could be sure I wired the boiler via an extension lead onto the next door neighbours house and it was find no problem.
3, when I disconnected the fly lead from the fuse spur completely turned on Rcd it was also fine:/
4. The fuse spur was spurred off a socket I checked this sock with my socket and see and all was ok also all resistance to earth readinging where above 1 mega ohm. And short circuit check was OL.
Am lost, I know it's a neutral to earth fault but what? Help!!!'n
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1,The boiler was powered up via a fuse spur, now if I was to have all parts disconnected leaving just the Pcb in place and the main earth to the metal case the Rcd trips off. Now if I remove the earth from the case of the boiler it's fine. The Rcd does not trip.
2,Just so I could be sure I wired the boiler via an extension lead onto the next door neighbours house and it was find no problem.
3, when I disconnected the fly lead from the fuse spur completely turned on Rcd it was also fine:/
4. The fuse spur was spurred off a socket I checked this sock with my socket and see and all was ok also all resistance to earth readinging where above 1 mega ohm. And short circuit check was OL.
Am lost, I know it's a neutral to earth fault but what? Help!!!'n
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