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I am getting more requests at my workplace for data cable installations, the majority of this used to be done by outside contractors, but with the increasing squeeze on saving money, they are now expecting it to be done in house by me. I am conversant with the wiring regs, and regarding the...

My Dad called me yesterday with a fault that I cant figure out He has a halogen exterior light which was tripping the lighting mcb when switched on, he disconected it at the switch by removing the link wire which came from the live feed to the other switch in the box - this was 10 years ago...

Hi With new lining paper, should I give it a coat of PVA before the emulsion, or just paint direct to the new paper? Thanks

Hi Fellas I have a project on to reduce power consumption, and currently have outdoor son lighting which is controlled via a photocell, and I am adding a timer so that they can be off all night on a saturday (no night shift on sat) but the on site security would like the option to be able to...

We currently have a voltage of approx 240 s/p 430 3/p in the building where I work, and the management are looking into a company who can reduce our voltage via secondary transformers in the promise to save us about 17% in running costs We use a lot of 3p motors to run conveyor equipment, and...

which says I can't use the armour of SWA as the only cpc? I'm sure this in not alowed anymore but cant find it in the big red book anywhere Thanks

Got some time off work, and decided to upgrade my old Wylex rewirable fuse board, for a Wylex dual RCD unit (on special at Screwfix) I have spent today going around assessing and testing the circuits I have in my house, and plan to change the board tomorow My question is I'm unsure which...

Hi Folks I have read loads of threads here about outbuildings and earthing arrangements, and when to export and when to TT, but I still cant quite get my head around exactly which scenario fits which situation best? Surely a 'fix-all' would be to export the earth AND a rod at the...

Hi not really a DIY question, but have recently had a PIR done where I work and the tester has picked up on us having more than one circuit in a MCB, quoting ref 314.4 as the non compliant The actual circuit is a lighting ciruit which has intermittent (one in every 4)maintained emergency...

Is it OK to use normal silicone to stick a mirror onto a tiled surface, or is there a good reason I should use the Mirror Mate adhesive which is 3x the price? Does silicone attack the mirror rear surface or something? Thankyou

I am lowering the ceiling in my bathroom by 8 inches, using timber battens and plasterboard, above it is the existing ceiling and the loft which is already insulated, so would it be advised to also lag the false ceiling too? many thanks

Hi I recently had PIR movement sensors fitted to a stairwell which controls 9 2D type CFL units which are also emergency maintained units, but since the installation I seem to be having a lot of lamp and HF ballast failures As the lights now switch on and off multiple times per day, as...

I know its not good practice to have multiple circuits from a MCB but how does this stand with the regs? Many thanks

Acording to BS 7671 I can have as many socket outlets as I want on a 2.5mm ring circuit protected by a 32A breaker (up to 100 sq M) If I run a radial circuit in 4mm, (with 32A breaker) is there a limit to the no of outlets I can have? (it is no larger than the specified 75 sq M max) Thanks

So what do you guys think is happening here then? http://news.bbc.co.uk/player/nol/newsid_7030000/newsid_7030100/7030178.stm?bw=bb&mp=wm&news=1 :shock:

I need to add an aditional single phase CU next to a 3p distribution board, but the board is full and has no spares, do I run the feed from the live connected side of the DB to the CU? If not, where? FYI, the MD of all loads will not exceed the 100A DB Thanks

Are the power supply points at camp sites protected by an RCD at the outlet point, or should the user (ie the camper) have the protection built into their equipment? also is 10 amp the max allowable, as they use the blue 16 amp plugs? :? Thanks

Just a quick question, is it OK to reverse an MCB in a DB, as I am having trouble gwtting hold of the specific type that fit, but have another brand which do, but it means having it reversed? Would the operation of the MCB be affected by the reversal of the current flow direction? Thanks

Just recenty had a 5 year PIR done at the place I work at, and it failed on the sprinkler system not been bonded to the MET, althought the sprinkler isnt dirctly attached to the mains water ( its an independantly pressurised system which is supplied by on site tanks topped up by the mains water)...

probably been asked a million time so appologies, but could someone shed some light here or point me in the right direction. Thankyou House built in 1950, cavity walls, DG fitted approx 5 years ago. I moved in 2 years ago in the summer there was no sign of mould, provious owner had...