Recent content by jelliottelectrical

I assume the changeover switch is to provide an EPS in the event of a power cut? In which case your inverter and subsequently any circuits protected need to have an independent (rod) earth as you can’t rely on the DNO earth if there is a power cut.

Provide your own fuse!

And DNOs are well known for their blanket rules ‘can’t do that, won’t do that’ that often prevent logical installations

The fuse knows at what location the fault occurs. If it’s over 3 metres (or 2 depending on the rules) it decides not to disconnect and your house burns down as result of you not following ‘their’ rules

No technical reason but surely it’s just the DNO saying ‘you can’t rely on our fuse for protection of your tails if they exceed 3metres’ therefore just passing the responsibility onto you

Straight to jail, do not pass go, do not collect £200

I did mention it when I posted the pic, it’s obviously a concern and will be replaced next week

From memory it was something like the DNOs don’t like you relying on their fuse for protection. I mean if I put an 80a fuse in the switchfuse I’m installing there is no discrimination between the two!

Nothing at all! No I know and it’s all going to be replaced

Yep This is the meter box The tails run up the cavity and join to that cable under the floor, then under the floor approx 25 metres to the garage where the consumer unit is. The single insulated cables go via the submeter to feed an annexe. And there’s a 6mm swa feeding another barn, via...

Started a job yesterday and this cable runs from the above car crash, to the consumer unit at the other end of the house. Joint here is where the meter was moved, and will be sorting that out I thought it initially was a 16mm twin and earth but actually appears to be a flat conduit with...

It’s definitely a looped supply, the cutout looks to have been changed more recently though, and that’s probably why the split or straight con has been used to renew the ‘loop’ to next door

I would argue that it’s current method of installation is less than ideal, given that the only form of protection on it will be a fuse somewhere between 200 and 400amps at the local substation, which will possibly not blow if that cable were to be damaged. If nothing else they may come out and...

No what I meant was they switch off the mains before switching on the generator so a short interruption. Rather than synchronising the generator and the mains and then switching off the mains, so no interruptions

This is a link point, the fuse carriers are where two circuits meet, fuses can be inserted or links to ‘back feed’ one circuit and the fuses removed at the transformer end Obviously in this case the two transformers serving each circuit were affected by the outage so they had to use a...