A few have the answer, with Geoff Blackwell spotting it first. The electrician was doing other work in the property, and found the problem while proving dead. 


One of the other properties in the village had a single phase submain with an earth fault, and a non—operative main rcd feeding it.


We used the famous “screwdriver in the flowerbed” to identify which phase had gone wrong, then tried a few properties our records said were on that phase, before settling on a riding stables with a three phase supply. As only one phase was affected by the fault, we removed one fuse from their cutout and asked them to call an electrician to locate their fault. The fault was located, and we drew our remaining fuses to allow the electrician to replace the customer’s main rcd, then replaced and re-sealed all three fuses. 


Regards,


Alan.

A few have the answer, with Geoff Blackwell spotting it first. The electrician was doing other work in the property, and found the problem while proving dead. 


One of the other properties in the village had a single phase submain with an earth fault, and a non—operative main rcd feeding it.


We used the famous “screwdriver in the flowerbed” to identify which phase had gone wrong, then tried a few properties our records said were on that phase, before settling on a riding stables with a three phase supply. As only one phase was affected by the fault, we removed one fuse from their cutout and asked them to call an electrician to locate their fault. The fault was located, and we drew our remaining fuses to allow the electrician to replace the customer’s main rcd, then replaced and re-sealed all three fuses. 


Regards,


Alan.