"Matt Pearson" wrote in message
...
I want to replace my csu. I notice in my leccy box that the main supply
tails come up through the service fuse, which has a metal seal, through a
metal block of 3"x2"x2" into the digital meter and into my csu.

It looks like I'd have to break the seal to remove the fuse to allow me to
detach the main tails into the csu.

I know you probably should get permission to break the seal (they'd
probably
insist on a qualified electrician to do the job + resealing - just trying
to
save some money by DIY), but it appears very easy to be done.

Then in goes the new csu with rcd and I'm update with spare fuses.

Any thoughts though on this main tails/fuse seal issue would be welcomed.

I was in the same situation not so long ago...

I rang the elec company, and they sent someone out free of charge to isolate
the supply in the morning, and someone else in the afternoon to reconnect.
(They took the fuse with them, so I couldn't reconnect it myself for some
reason)

I took the opportunity it fit an isolator in between the CU and the meter,
so if I needed to do any more work to the CU, I could just switch it off at
the isolator.

The bloke that came round to reconnect me was surprised to see I had done it
properly by calling them out to isolate the main fuse, and said most people
just pull the fuse themselves - So I took that as it wouldn't of cause a
major problem if I had simply removed the sealed fuse myself - But as it
didn't cost anything for them to do it, If I were to do it again I would
still call them out myself to be 100% sure!

Sparks...