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Hi Botchartist, From what I can see in your diagram it's not a standard 2 way arrangement. As you say, generally a 3 core & Earth would be used, although 2 x 2 core and Earth could be used instead. However, if that was the case here there would be another cable. What you need to do first...

Teahead, this is a common misconception - There is plenty on Part P elsewhere on the forum, but anyone can do electrical work. If you are not registered as competent with one of the Part P schemes then you must notify the Building Control before you start, and pay them to certify it as compliant...

Just to add, the fact you've already considered this shows you should be able to cope with sorting out the rest... It is a good idea to isolate the CU first, that will reduce any possibility of arcing when you remove or replace the fuse. It is best to remove or replace the fuse quickly and...

Hi Fred, As others have said it appears to be T-N-S, although it is very hard to tell without looking at it properly as sometimes things have been altered and the original cabling left in place to mislead you. A call to your current electricity supplier is definitely worth a try as they...

Sorry to hear that Eddie, Maybe I was lucky then, because someone else on my EAL VRQ course described his assessment as a grilling. With mine I had the feeling that I would have had to electrocute myself in front of him for him to find a fault! It was quite instructive too in that when...

Hi mst, I registered with the NICEIC back last year sometime, and once all the paperwork was sorted I got an appointment about 10 weeks later. That was last Wednesday and apparently I am competent :o Just waiting now for the registration paperwork, but the guy who attended said I...

In reality it's probably unlikely that there would ever be a problem, but its bad practise to rely on downstream protection - if there was an overload on the ring somewhere then more than 20A could pass through the switch and cause it to overheat. Having said that, you could have a single...

Ok, That is better, except I would say that item 2 cannot be a 20A switch, assuming the ringmain is on a 32A breaker. If you replaced it with another item 1 with a 13A fuse then that's fine. in fact you could lose one of the legs after the dual socket, and have the fan FCU as a spur...

oops - Eddiecurrent is correct about option 2 - in my defence I saw it as a representation and not an exact layout :oops: Gavin

Either is acceptable - you can run cable either vertically or horizontally from socket to socket without protection. Many people seem to prefer the first option, but it does use more cable. Although you don't need to provide any protection, generally plastic oval conduit is a good idea -...

That sounds like you have more than 3 wires then? a breakdown of what cables you have would be useful, otherwise its hard to give exact advice. From what you have said, would I be right in thinking that you have: 1 cable with red and black cores that you know comes from the ceiling rose...

Not as a wiring diagram, there are too few wires for a start and not enough information... But as a logical diagram it works with a couple of caveats... Is this a radial circuit? If so, and its protected by a 20A or less mcb then its ok, otherwise the switches should be fused switch units...

Can't add anything to Bernard's answer re the switch. If the wall lights or ceiling rose are metal then the earth MUST be connected to them. If everything is plastic it is not so essential now, but still best to do it to make things easier if they ever change fittings later on. The earths...

I agree, most structural surveyors will not be expert in electrical, though I would imagine many would suggest an electrical inspection just to cover themselves... If on the other hand it was supposed to cover electrical then certainly there would be a case for claiming something. Having...

What we need to know to advise on how to wire it up is what you plan to switch with the PIR. From the sounds of it, you have an extractor fan connected to the light, which you wish to switch from the PIR? Give us more information and we will be able to give a fuller answer. Gavin...

Hi, To offer full advice we need to know whether either the removed or existing switches (or both) are two way - i.e. the light could be switched from two places, as is common in a hallway. and as jj mentions a breakdown of the cables and colours would also help. If you have...

damn, too slow :D At least we agree! I suggested bridging the Com - Com only because the existing bridge cable may be short and may now not reach Com to 1 Way, but either will work. Gavin

Hi Smithfield, If I understand what you have right, the following is what you need to do: The existing Red into the bottom right Com will now go to the Com on top right. The short length bridging the bottom com with L1 should now bridge the two Com connectors at the top, from right to...

It is certainly becoming more relevant to have certificates and as Comms points out if you have obvious recent work done with no paperwork a sensible buyer will question it, but there is absolutely no requirement for an electrical inspection before selling. I would imagine that most surveyors...

Hi Timbo, Sounds like your best bet might be to get a PIR (Periodic Inspection Report) from a local contractor, preferably one with plenty of experience and qualified engineers so that their report will carry weight should you need to claim. That should detect any serious defects which...