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Hi festa, All I can add is my personal experience with NICEIC, who I have just passed the initial assessment with :D In my case, the EAL Level 2 VRQ was adequate and I wasn't told I needed to obtain any other qualification. The assessment was relatively straightforward, mainly...

Hi Con1, While it is certainly neater and "a good thing" to fix them to the joists, I wouldn''t be too concerned. The main reason is to keep the cable away from nails being driven through the floor for some reason.... If the cable was run using rods, then its not possible to clip it along...

If you want a semi decent detector you could check out the Bosch DMF 10 http://ukptocs.bosch-pt.com/boptocs-uk/Product.jsp;jsessionid=0648AE5DF704D7B3F307DF95DC2FF203?division=gw&ccat_id=81943&prod_id=9442 which is about 70 squids. I've found it quite good at locating cables at a reasonable...

Sorry probably not being too clear at this time of the morning - the 63A is the maximum demand calculated for the main CU with the sockets, lights etc on. The storage heaters are on a totally different CU, split using henley blocks. For heating, the on site guide advises the first 10A plus...

Another early bird I see... I was hoping noone would ask :D They are rather ancient but I will be looking on Sunday. Although they are each on 20A fuses I doubt they are any more than 2kw. Gavin

Hi, Can anyone advise on how they would work out total demand including diversity in a situation with economy 7 storage heaters? Working out the maximum demand on the main circuits gives me about 63A, which works out ok (the main house fuse is a 60A - the main CU has 100A isolation...

Good points by Adam as always... If you are already paying LABC to certify the building work then check they don't charge you extra for certifying the electrical installation - they are specifically prohibited from doing so but most seem to do it since they normally sub contract to a spark...

Thanks Pensdown, a lot more readable :D I won't claim expertise here, I'll have a bash based on my understanding of the On Site Guide: 'Where an RCD is fitted only because the earth loop impedance is too high for shock protection to be provided by an overcurrent device, for example in a...

jcp, According to table 7.1(pg 42) of the On Site Guide (which you should consider buying if you want to know anything about how to DIY electrical), the maximum length for a 32A ring on a type B breaker(the most common arrangement) is 84 m so that should give you something to work with...

Ah, I hadn't considered that the induced voltage would work within the same cable onto the earth, but it makes sense. It can only be the extension that is floating I think, because it runs to a plastic back box in a stud wall, so has no other earth available. The cable was live when he...

no, yes, yes, yes and maybe..... or to be a little clearer :wink: The advantage of a ring final circuit is that it can carry a larger current load than a single length of the same cable. However, the risk of overload is dependent on the load you apply and that should be the deciding...

Its not essential - There is no requirement for a certificate to be provided, although a surveyor will normally mention it in their report, especially if they see recent electrical work. The 'Regs' suggest 10 yearly inspections for domestic premises, but I bet over 90% of (privately owned and...

Thought I'd run this one past you knowledgable lot... A client that I do website and database stuff for asked me a question about his wiring that I didn't know the answer to. He has extended an existing dimmer switch with a simple 2 core and earth to relocate the dimmer. All is wired...

Fair enough - I'm all for accepted practice that saves me having to do calculations :P

I agree with your answer secure, but if you have a 2.5 ring on a 32A mcb then in theory a single length of 2.5 won't take 32A... I realise you should only have a single 13A socket (single or double) or a fused spur on the end of the cable so that it won't be over stretched, but that is...

Sam, Assuming you mean a NICEIC registered domestic installer, or a registered contractor, then you should have received a NICEIC certificate which is purple or red depending, and has a traceable serial number. you should have received this at the end of the job, directly from the sparky, or...

Thanks for the suggest greenbarn but I think I'll live with it as it is :D Many thanks for the useful info... Gavin

In the process of rewiring my father's house, I needed to check the house fuse for the certificate. Having found the cover loose and falling off in my hand (honest guv) I found it was a 60A fuse in a ceramic holder. 3 questions follow from that. 1) in practise, how easy is it to get the...

Hi, in the process of gradually rewiring my father's house, I let him buy the sockets and have spent many happy hours cursing the designers who had clearly never tried fitting 3 x 2.5mm2 cables! The ones I've used have been a combination of Wilkinson's own brand (not sure who makes...

I did ask this question on a course, and the tutor couldn't come up with an answer, but thinking about it afterwards it makes sense - if the cable is cut and the phase insulation damaged it increases the chance of it shorting to earth and tripping the breaker... But that is the same argument...