YoU will not believe how many circuit sketches I've made to try and work out how that neutral earth fault can render the test button inoperable, without
Derlyn Yesterday, 06:23 PMOk. Was a neutral earth fault on a 1mm FTE going to an outside bulkhead light.
The live was not yet connected in the db because the light
Earth leakage problem. Help.
Try swopping the live and neutral in that diagram, and insert the dead fault between the "new" neutral and earth.
Dave A Today, 08:32 AMAnd remember to bridge