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Few questions before we can help. 1) Are the faulty sockets all grouped together rather than dotted around the place with working sockets in between? 2) Do you have a radial or ring circuit. 3) Do you own a multi-meter?

Hi, I looking for advice on the best way to close a cavity around the outside reveal of a sash window? Also should the concrete cill be allowed to bridge the cavity, be tied into the inner wall etc? Thanks BN.

Never had a problem with them ... beyond the occassional wait for goods to be in stock. Like anything pay on a Credit card if you want extra protection.

Can I ask an unrelated question? What edges did you trim? I’ve an image of you nephew massacring the edge of your lawn … you know the left handed screwdriver gag works better :)

Have you considered a contactor? (They are DIN rail mountable relays.) Dedicated heater circuit through a contactor. The control side could be supplied off the light circuit via a 3a FCU. (that way you can isolate both the load and control sides). You could also consider supplying the...

If you get a L-N short then the fuse/MCB will blow. The RCD will only trip when its earth leak threshold is exceeded. Your nephew probably got a painful shock below the earth leak threshold of the RCD. His resistance to earth was high enough to prevent a sufficiently large current flowing...

I asked a simple question. How did you determine that there was live at the shower? Now why did I ask this? Let me explain. If you detected it with a neon probe they false report. If you measured it using a meter to neutral then there must be some circuit back in the neutral or...

How do you know its live ... exactly how did you test. If you used a neon screwdriver ... bin it.

TT supplies don't come with a earth. You provide your own earth with a rod stuck in the ground. Now where as a typical PME/TN-S supply has a low resistance to earth causing large currents to flow to earth during a fault, a TT supply doesn't. The larger the current flow the faster an...

You don’t need to plug a FCU in. An FCU is essentially like a fixed plug. It can be wired directly into the ring. Its internal fuse protects whatever is on the load side of the circuit. Do you have any spare tiles? If it was me and you did I would chop out the tiles below two adjacent...

Unless of course you have a TT supply.

If it’s a 20A radial or 30/32A ring circuit where the socket is not itself a spur then yes it should be ok. If it’s a 4mm radial then again it will be ok if you use 4mm cable to the FCU. Of course if you are not a CORGI registered boiler installer you will be having the gas, flue and...

Isn't the breaker at the wrong end of the box? The breaker should ideally be next to the incomer. Interesting black marks below too.

Well that may be the last we will hear from kai.

Option “c” was to use an RCBO. RCBO’s combine the protection of an MCB and RCD into one device package. This allows the circuit to have its own RCD protection. In effect I fused on a non RCD side circuit it allows it the benefit of RCD protection but without the nuisance of tripping or being...

Assuming the cooker is supplied from a dedicated 4mm circuit protected by a 32A MCB/30A fuse we are allowed to apply diversity to the calculation – this allows for the fact that the cookers will not draw 100% of their current all the time. 6Kw + 2.4Kw = 8.4Kw @ 230v = 36.5A Applying...

How does it work then … is it a hand job? That’s good too … so tell me do you have lights or is it candle power? :) Depends where the pump is located, what else is in the room and the type of pipe work you have to/from the pump. Sorry I can’t be specific without a bit more info.

It is the season for cooker circuit questions! 1) You must provide an accessible method of isolation in close proximity to the cooker. That’s normally achieved by placing the cooker switch above the worktop within 2m of the cooker. You can then run the cable to a cooker connection unit...

Spare fuse wire, sheathing, torch and a MULTIMETER! Tool belts are good too as it helps prevent those painful injuries when you put screwdrivers in your jean pockets. :x

Your answer is in the reference section at the top of the forum and if you search you will find loads of similar questions answered in detail. Ahh have to get up earlier to beat B-a-s!