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I wouldn't call it nonsense Dave, a possibility based on a permanent live. If indeed the live is permanent, as the op has stated, then the neutral is switched. So you explain to me how if the lamp has a permanent live, how else can it be switched other than through the neutral? The op...

Yes the RB4 method or spider was commonly used and still is,nothing DIY about it, the fact that it will have to be a spidered line and looped neutral affair would be DIY ish LOL.

And that's the end of this thread....... CLOSED

Dave

Dont really know, just felt right, ill google it lol ---------- Post Auto-Merged at 00:52 ---------- Previous post was made at 00:47 ---------- Perhaps, or a fused switch, ill give the op the benefit of the doubt on this one :)

So the permanent line to the lamp is a fault? and also we have a broken neutral fault, okay it not impossible it will also raise the neutral to 230V, ill go with my option based on the ops description.

Does it sound as though the Neutrals are distributed normally lol. Hence why i said........ Live looped in to each light, neutral switched, all neutrals will be at 230v until switched, loose the neutral loop on the first light then all bar that one fail, and all neutrals at 230V ----------...

Live looped in to each light, neutral switched, all neutrals will be at 230v until switched, loose the neutral loop on the first light then all bar that one fail, and all neutrals at 230V ---------- Post Auto-Merged at 00:21 ---------- Previous post was made at 00:12 ---------- Not seen it...

how do you explain the neutrals at 230 V

Well, id suggest the lighting is neutral switched, go to the light that works, if neutral loop from this light is lost then that light will work and the rest wont, start from the working light i bet its the first on the radail

Is not just switched neutral?

Dave for sure those with practical experience do the job well visually, though if you lack theory you will not get much further than installing standard circuits. I know a NIC AC, fitted a new cu, RCD kept tripping so he removed it, system was TT. Now hes been a sparky for 30 years and...

what makes an electrician? I know many electricians Di and AC yet they cant design and struggle to test in certain enviroments, yet they have all the qualifications and cards to boot. The problem is how do we grade all these people with differing levels of competence in the many areas of the...

[quote name='Andy

Id say you would be better off drawing up your self a Visual Condition Report. This way you can advise the customer on the installation and what recommendations you are advising. |My understanding is that a EDN requires the client to advise their insurance company, hence why she may feel a...

Have you tested the on/off?

PME is a variant of TNC-S, as is PNB

Ok Well, certainly on overload you would have discrimination, short circuit on the other hand its not guaranteed the 32 amp will trip first. Whats the PSSC at the various points on the circuit.

Have you tested the distribution cable?

1) Is the Installation using RCD'S for earth fault protection? If yes then test method 2 GN3(ELI) may be used, the resulting reading is taken as the Earth electrode resistance Ra. So no issue in my mind entering this value in the Ra box. Although i agree it is a Ze measurement, and that's where...