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Can you supply a pic of the intake with the cutout?

You need one of these . Wire it in 6mm².

Have you tried taking one of them out of the equation and seeing if it works? If it does try taking the other one out?

No couldn't get the pic up - sorry!

It's amazing what what you can get at M&S these days. Wish I'd known about it when my kids were younger! :D [/url]

On Pcs and other sensitive equipment I usually do an earth continuity check @ 100mA and then an earth leakake test @ 6mA, as long as it is <3.5mA it is a pass.

Yes you can replace switcthes and light fittings with plastic ones as these do not require an earth. But as your wiring is more than 40 years old it would be a good idea to have it checked over with a view to having it rewired.

Been asked to fit some fans in a clubhouse toilets. When asked about where they were to be vented I was told into the roof space. I said I thought that was contrary to building regs, but was told that the architect said it was ok. Can anyone tell me who's right here, and can give me ammunition...

Strickly speaking you should have a 50A MCB for 10.5kW as we now base our calculations on 230v. You would also need to check on the size of cable used as 6mm² would definitely be too small. You really need to get hold of an electrician to have a look at the whole situation as it sounds as...

I would have expected the red wire to be the permanent live, the black wire on its own to be the switch wire and the other black wire that goes into the neutral connector to be the neutral. This is quite common, but if it is correct the switch wire should have been flagged with red tape.

Thanks for the replies kevindgas and Spark123, I will let you know the outcome when I see the owner on Sunday.

They are too small for main bonding, that's why I'm assuming they are supplementaries going to the earth bar in the CU. Also where the gas meter is fitted in the utility room against the garage wall the obvious route for the main bonding would be through the wall and along to the CU. Basically...

Agreed, the two cables going into the CU were 4mm, that's why I said they were for supplementary bonding. Probably, from the old bathroom and new ensuite that was fitted.

Also be aware some have internal fuses. So it could be as simple as replacing one of those.

Apparently the contractor is quite a big firm certainly not a domestic one. I hope to be able to have a look at the certificate when I see her on Saturday. But my guess is she won't pursue them. I had to correct a socket that was previously left dangling on the end of a dry-wall moulded box...

NO not as far as I can see. There are two earth cables going into the CU but these look to be both supplementary cables. The CU is situated in the garage and the gas meter backs onto the garage wall and there are certainly no earths coming through from there. When I get a chance to speak to...

Came across this today at a friend's house. It is the main bonding for the gas meter and all it is is a loop bonded to the water pipe at the sink. There is no bonding at the water stop cock either. This is as a result of a major extension done to the building and the electrical work was...