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BAS - you have not commented on my post above - do you still say that (extraneous) pipe cannot be used to link MET's ? Would be interesting to hear your views. Regards

The copper pipe runs from the house cellar where it is bonded to the house MET, under the floors and out along the terraced wall into the outbuilding. It is electrically continuous.

BAN, as OMS has pointed out on the IET forum - have a look at 543.2.6 - you might change your mind. As stated there, I am not happy that the unsightly pipe will not be changed ans will go with TT. I, m going with TT and a plastic section in pipe before building. Regards

Thanks for your replies RF, Eric & John, but for the 4mm cpc on the 10mm cable and the fact that the copper pipe may be changed, I would PME the install. As it is, I'm going to TT and investigate a plastic section of pipe before it enters the outbuilding. Were it possible to run a 10mm...

Would welcome your views please. Please note that I have posted exactly the same question on another forum as I am keen to get as many views on this as possible - it seems to be a contentious issue! Domestic property, TN-C-S described as PME feeding 10mm² to outside wall of house where it...

Does it still happen if you switch off the lamps?

Sounds like a connection has been disturbed. As the conservatory is fed by a cable feom the house and the socket in the house is mis- behaving, then why not have a look at the connections behind the house socket - that's a good place to start. Regards

Looks to me as if the transformer has been resting on the luminaire carcass - doesn't look like an internal fault. Regards

No sleeving on the CPC - very bad.

Would like some advice please. Background: Am at the project planning stage of installing downstairs lavatory, kitchen move/extension, loft conversion. Part of this project requires that a new boiler be fitted. The existing boiler is over 25 years old and whilst a shame to remove a fully...

I had a meter like that once - it was made by Breville.

Sorry to butt in - but a relevant/recent example. Called to a property yesterday for an immersion heater fault. Subsequent investigations showed:- (1) Suppliers meter broken (2) Unconnected CU Earthing Conductor (there being no MET) in meter cupboard and no access to head without breaking...

Loose connection between breaker and lighting. Try isolating CU and tightening breaker screws - if not that then is likely to be a junction box somewhere - probably in roof space. A loose connection would not necessarily cause the breaker to trip. As it is a loose connection would be prudent to...

If it were me, then I'd use diversity calcs to assess the total demand at the head only but would still size cables to the appliances based upon maximum possible demand - am I wrong? Regards

BAS, Developer asked for remedial work. There are other delights too - all from the same property, examples being, five T/E cables 'connected' together in the attic space with choc. block and tape but CPC's cut off, or the feed to the boiler T/E nicked in two places exposing line conductor...

Yes, shed with a bed, lavatory and shower. Outside, on a tasteful set of decking, a hot tub too surrounded by a screened pergola. 8' x 4' pictures of Rome and Barcelona, daisy chained lights and various amphorae and vases (presumably where the car keys were put). Lovely.

Lovely. (1) Incoming wiring to outbuilding (2) Electric hand washer used as shower over shower tray (3) A miraculous extension lead (4) Central heating supply (5) Wiring (and water) between house and outbuilding Thrip.