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Please tell who is this BL@@DY company!!! I need to build a test board for 2382 next month and I don't have any money :cry: Don't need expensive parts. Need a cheap split CU too. What price will this imaginary company charge me :D

Hello folks! Please settle a bet for me. Question. Does the metal framework for suspended ceilings need to be bonded? My answer. No. I don't think it is an extraneous conductive part (i think!). Only the metal flouresecent light housings. The Air con is earthed not bonded. Mike's...

If 3.9kW then manual is being a bit cautious. 3.9kW is just under 17 amps. 2.5mm cable can carry 27amps. For 3.9kW you can run a radial with 2.5mm T+E protected with 20amp MCB on a dedicated circuit. (Assuming no major correction factors - you need to supply further info of the enviroment the...

Only difference this is not a bungalow! Know the book far too well! Also my sisters outbuilding has a dirty great big asbestos roof at present, hense her going to have a wrestling match with BC. I saw her kiln at her school some years ago before I had my becoming an electrican epithany...

Your best start would be to look in the wiki. Many of the regular posters have put diagrams and explanations showing exactly this sort of thing as it's an often posted type of question.

Absolutely yes!. If you put a spade through it I imagine you would like current to disconnect!! You need to earth it at both ends with proper connection termination glands. Do not be tempted to use a BS951 clamp, big no no. I am answering this assuming you are not using the armour as...

Nozspark. Nonsense I don't take offence and I didn't read your post as offensive. I read it as you saying if wire had been drilled it wouldn't affect IR reading which I was questioning. I probably misread your point. :wink: PS forgot about the paper work bit!!

A multi meter is not the tool for the job. You need a insulation tester.This basically fires 500V down you conductors and it measure the resistance which needs to be high (>2M Ohms). You can buy one on ebay for about £50-60 for a cheap one. If your sparky was a regualted sparky he would or...

It can be pretty dark up there! A tip I discovered was to mount a small mirror on a stick and shine a light up the stick and hey presto you can see around corners. I used a make-up type mirror you get on blusher etc, not that I wear make-up. (not during week anyway :D )

This is also good tactic is you want spring clips for downlighters. Buy downlighters , take them back saying "why don't your suppliers check the contents before depatching??" :D.

Oharaf Nice to know there's others out there striving to become sparkies. I was thinking of using this project as the major part of the NICEIC assessment, I know my wife will get further ideas for garden electrics so i think I will run a dedicated circuit to outdoors which can be easily...

I don't understand how the RCD would have tripped if just the CPC was compromised? I would really like to know the insulation resistance readings after the repair too.

Securespark: "Noz" ??? I think you meant RJB!! Noz was arguing that resistance would be >299M ohms!! Splitting hairs maybe as well as cables!

And so did my double glazing fitters!! (When fitting French Windows, not hanging a mirror for me. Mrs RJB can hang a mirror :wink: )

Glad you've found problem and glad your fixing it. If it was plumbing it is obvious something 's wrong - you get wet or see water dripping. Electricity is a bit more tricky and dangerous. I am chewing the cud now. I would argue the OP's situation could be a very real fire risk. If a drill...

If you've drilled off the insulation so have exposed conductor close together would the results of insulation resistance be as high as you state? In this case it is easy to access the fault and it will be covered up by thecupboard so yuor suggestion of going into wall is a valid first action...

Not necessary. Is you test for insulation resistance by firing 500V down the circuit then if the results are greater than 2M ohms then everything will be fine. If less than 0.5M ohms then there is a big problem. If the cable is nicked then you may get a reading between the two which indicates...

I'm removing the post this replaces. I didn't read the bit about RCD tripping.A lesson in not reading very thing twice as I was told as school many years ago!!! SORRY

I take you don't have test equipment! Phone a sparky and say what you just posted. He will test your circuit for insulation resistance and hopefully put your mind as rest. If necessary he can carry out any recification needed. Don't worry. This happens a lot especially with pictures being...

The course is very good for getting the principles of electricity (Ohm's law, series / parallel circuits, power etc) You need a good grounding (no pun) in this area so you understand what you are doing. There is also a lot of stuff that whilst being interesting, I know I will never use again...