Had an electrician do a periodic inspection on my place today - I was very impressed by his thoroughness and knowledge. Got pulled on a number of points so will have to cough up for a re-inspection as I want to sell with a clean report:
- No earth at bedroom light - traced to a broken connection
- He didn't like me feeding the bathroom lights/shaver/fan through a fused spur unit: running 6 x 1mm cables into the outlet terminal, although they fit, is apparently not on. So a little rearrange called for.
- Heating/hot & cold pipes need to be cross bonded even though it's all copper.
- Didn't like wiring to boiler: I've got a FSU which isolates all the heating, a three core and a two core flex coming through the flex outlet (they fit tidily IMO), one feed in, the other back to the MVs. Needs to be replaced by a four core flex.
- In the new CU the earth and neutral connections must go to the same numbered terminals as the MCBs - I filled from one end.
The rest of you would never do any of the above of course, but just in case you were tempted, this may save you trouble.