C
Chector
Hi, I've come across a system with no apparent main fuse. The supply comes into a metal hinged box with the words BIG Ltd on it. This is boxed inside a cupboard so I can't open it or tell if it is sealed. The tails then come out to the meter and into a double pole connector block. This splits the supply to two old cartridge fuse boards. Has anyone come across this before. I guess I'll have to ask the DNO to fit a modern fuse and isolator as I'm installing a consumer unit but an advice would be gratefully received. If I could work out how to post a picture on this forum I would upload them.