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I would think if the supply has RCD protection it’s not a problem, but if not, supplementary bonding should be in place.

No, I think it was more of a safety thing, extraneous metal, and all that

The mobile racks we used in broadcast TV had 10mm earth cable connected it was a multi strand (very fine) not like the solid 7/9 core in general earthing but if it’s a fixed rack that’s not an issue.

If it needs earthing you will find specific lugs for that and the side panels will already have fly-leads in place.

I am always amazed when you open them up and the cable size is so small!!

Are you able to shield the battery cables?

Orange (3) is bell so not really necessary 2&5 line The polarity these days is not so important. The old Trim phones were polarity conscious! As an aside BT don’t like people messing with the master box and have prosecuted in the past. The new master boxes have a clamp system for the cables.

I agree with C15JON They all share neutrals with a common RCD, so low/short insulation N-E will give same result!!

did you turn off or isolate the cooker? I would have been inclined to make a lead with open end to 13a socket!

And with AI coming to the fore, we are all Bu**ered

“Spoonerisms”!!

Problem is Binky, the annoying sales callers are using equipment to scramble no’s so it looks like a local call

TRS rubber cable perishes and crumbles away!!

Some of the French systems are 240v L-N but the L is earthed!! Marina’s were a classic example you used to have to cary separate adaptors in France.

why not install a 40w thermostat oil filled rad (tube) under it and leave it on 24/7 let the stat do the work! It would all need to be installed in an enclosure.

Sector is an own brand CU from rexel senate electrical wholesalers. The newer ones are rebranded electruim CUs, the same as wylex, volex, crabtree etc are. IIRC the older ones were rebadged GE CUs

Had an old Wylex plastic board (white) catch fire. loose connection on Fuse terminal.

I saw a few fires, normally in a cloakroom with coats and other general clothing covering the board, so any poorly terminated cables got hot and there was all the combustable material to feed a fire, right there!!

I am not disagreeing with your theory, but if it’s a fire in the c/u then the stairs are quite an important escape route!!

Welcome. Hope you get sorted