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Nope, that's the AC voltage setting. To check the resistance you want it on the lowest of the ohm ranges (the symbol that looks like an O but with the bottom folded out to the sides if you see what I mean). On this range, you'll see a 1 if there is no continuity (meaning infinite resistance)...

How are you testing the power and the fuses - you say that the fuses reported 0 voltage, if you were testing them by metering the fuse directly away from the CU then you would want to do a resistance test, not a voltage test...

I'm assuming what you meant by your question is it allowed by the regs, however to answer your actual question first, is it legal - the answer would be only if you notify your LABC in advance and pay their fee as any electrical work in the bathroom is notifiable under Part P of the building regs...

In theory if you're getting a small shock then that should cause the RCD to trip. It's possible the current wasn't enough to do it (would need to be at least 20-30mA) if it was only a small tingle you were feeling. Alternatively it could have been wired up wrong, or be a defective RCD - when it...

It should be OK, a few things to be careful of though: * Make sure the electricity board really have cut the correct tails, and there is no supply to this CU * This is unlikely, as you'd probably have noticed it since the storage heaters would have come on when they weren't meant to (and...

Depends how you define gang - I was using 1 and 2 gang in relation to the mounting boxes, if you use it in relation to the number of grid 'slots' as it were then the 2 gang goes top and bottom, the rest in a bit from the sides...

Indeed, the 2-gang plates have the faceplate screws set slightly in from where the box screws (which hold the actual grid in) will be, on the 1-gang plate there isn't enough room for that, so they go top and bottom instead...

Problem is what if you don't realise it's a gap / wrong - you might go away thinking what he's taught you is correct, and then either get questions wrong in the test, or worse leave things in a potentially dangerous state on a real installation somewhere. I would be writing an official...

Yes this is perfectly normal - neutral to earth linkage will trip RCDs for exactly the reason you stated... It's one of the reasons why single RCD boards have essentially been banned by the regs, because a neutral-earth fault on any circuit breaks everything. Incidentally though - does...

A neutral to earth fault can cause an RCD to trip, so just disconnecting the lives doesn't necessarily prove that it is a faulty RCD. Given you seem happy working in the CU (obviously always switch off, and be careful as tails coming in to main switch will still be live etc), I suggest you...

Doesn't sound quite like an IDC terminal then, if he didn't have to use an external tool to make the connection. As for only 2 wires, that's all you actually need for a phone line - only 2 wires come in to your house (the cable might have more in, but only 2 are used per line). Within a...

If they're the multi coloured ones then the quality you tend to get from electrical wholesalers seems to be very poor, of the 4 or 5 I've bought for various reasons over the years, I think none of them still have everything working, not even 2 that were used very briefly for one scene during a...

Wouldn't the plaster/filler just crumble etc when you remove the guide?

It would be better to extend the ring - so instead of two spurs you split the current ring, connect one leg to the first socket, a new bit of cable between the two new sockets, and the other leg to the second socket. If you need to extend the existing cable you could do it with crimp...

A picture of the cable and where it runs overhead would be useful for us to determine whether it's 'right' or not. Also a picture of your consumer unit etc would probably be useful...

First obvious thing to check is that none of the breakers in your consumer unit have tripped (in which case just resetting it will probably be enough), in most cases you'd have noticed this as other lights on the same floor etc would have gone out, but it's always possible that the bedroom is on...

Either this socket is a spur, that someone has spurred from, or it is on the ring, but somewhere between the leg that became 'live' and the CU, there's a break. Either situation is bad, and should be investigated

You want 20A DP switches for the isolation. Incidentally, since nobody else have said it, you should be aware that if in England or Wales this work is notifiable under Part P of the building regs, so you either need to have it done by a suitable electrician (check they're on...

An MCB is a Miniature Circuit breaker. These normally have two parts, a thermal and a magnetic part. The thermal part causes the breaker to trip if it is slightly overloaded over a long period of time (i.e. it heats up, when it gets to a certain point it causes the breaker to trip). The magnetic...

Fault may not be at that socket of course, if there's no proper earth connection, then it could be that there is a voltage between true earth and the house earth, which is what you're feeling - this sort of situation wouldn't necessarily trip an rcd for that socket...