rules for in london

[tornadoarnold]

hi everyone,

i am looking at doing a rewire for a friend of the family in wimbolden at easter time, and understand that local building control in the london area have certain rules which don't apply to the rest of the country.

things like you can't use brown blue(sleeved)+ cpc for the switches, it has to be twin brown +cpc.

any info on what the different rules are or where i can find them would be much appreciated

 

[Mark_Burgess]

If you drop twin and earth to the light switch, put brown sleeving over the the blue insulation at both ends of the wire to indicate it is a switched live.

 

[bugsy]

Someone's pulling your p^^^^^ wired 4 very large town houses and 14 flats in wimbledon as long as its all to BS 7671 - 08

 

[mattb42]

Maybe for council owned property at a push but not in private homes.

 

[Phil]

known many different requirements for council owned houses to there spec but for private owned houses to bs7671 will be fine

 

[tornadoarnold]

thats what i figured it might be. cheers guys

 

[Sintra]

Just out of curiosity why don't you use twin brown & earth for switch drops as standard on the mainland. In N.Ireland it is used as standard.

 

[Jason Smith]

you never could use brown and blue sleeving for the switch wires as they are both live, either both red or both brown. I will only use blue if its a live to switch and the neutrals are in the old colours. Interestingly, my inspector didnt have an answer to weather or not i should sleeve the black in red, or brown, when working on a switch in old colours . It is far from a hanging offence andI sleeve both in brown, as we all work to the new colours .

sintra, you say the mainland demand twin brown and earth now for swtch drops, can you expand on this, I wish to be at the forfront as it were, and if this is coming "in " I will get some ordered. I will rder someanyway as its a better job. However, I feel our cal outs wil drop because the B & q ers will start to not mix their lighting wiresup so much tehe !!

 

[Sintra]

you never could use brown and blue sleeving for the switch wires as they are both live, either both red or both brown. I will only use blue if its a live to switch and the neutrals are in the old colours. Interestingly, my inspector didnt have an answer to weather or not i should sleeve the black in red, or brown, when working on a switch in old colours . It is far from a hanging offence andI sleeve both in brown, as we all work to the new colours .

sintra, you say the mainland demand twin brown and earth now for swtch drops, can you expand on this, I wish to be at the forfront as it were, and if this is coming "in " I will get some ordered. I will rder someanyway as its a better job. However, I feel our cal outs wil drop because the B & q ers will start to not mix their lighting wiresup so much tehe !!

No Jason what I asked is why twin brown & earth is NOT used as standard on the mainland. All I have ever seen used is Twin & earth with the neutral sleeved accordingly. Why not use the correct cable to start with.

 

[Jason Smith]

mate yourspot on. this forum is all about continual improvemnent . I will order some tomorrow, my local c.e.f. have it in stock and from now on, thats what this this team will install. Superb stuff.

 

[ian.settle1]

mate yourspot on. this forum is all about continual improvemnent . I will order some tomorrow, my local c.e.f. have it in stock and from now on, thats what this this team will install. Superb stuff.

It may be more expensive than normal T & E if so would you want to pay extra than standard T & E think off our profit

 

[Hawk81]

However, I feel our cal outs wil drop because the B & q ers will start to not mix their lighting wiresup so much tehe !!

we still get plenty of call outs due to the b&q ers who just connect all the browns together then wonder why the light will not switch off.

It may be more expensive than normal T & E if so would you want to pay extra than standard T & E think off our profit

very little difference in price. it is worth paying that small bit to do the job correct.

 

[pennywise]

It's just another drum of cable to lug around though, and you still have to buy a drum of normal t+e to do the rest of the lighting circuit, bit of a waste of money personal opinion.

 

[Hawk81]

It's just another drum of cable to lug around though, and you still have to buy a drum of normal t+e to do the rest of the lighting circuit, bit of a waste of money personal opinion.

i totally disagree. a job that has been done with the proper switch wires looks alot more proffesional and no need for brown slieving. or people who forget to slieve the cable. just my opinion tho.

 

[pennywise]

Agreed it does look better. Though it makes terminating far quicker having the different colours you don't have to waste time belling out cables. If it was going to catch on it would have done it by now the stuffs been avalable for years. Anyway everyone has their own way wonder when they'll bring out three core and earth with two brown and one blue or even three brown cores

 

[Sintra]

Agreed it does look better. Though it makes terminating far quicker having the different colours you don't have to waste time belling out cables. If it was going to catch on it would have done it by now the stuffs been avalable for years. Anyway everyone has their own way wonder when they'll bring out three core and earth with two brown and one blue or even three brown cores

You shouldn't have to bell them out as 1 of the browns has an inner layer of white insulation. So when cut you can see a white ring below the brown outer insulation.

 

[Notsosmart]

hi everyone,

i am looking at doing a rewire for a friend of the family in wimbolden at easter time, and understand that local building control in the london area have certain rules which don't apply to the rest of the country.

This used to relate to commercial installations within the London boroughs, as I've stayed away from the 'smoke' for a couple of years it may not now be so ~ perhaps those of you based in the capital can enlighten us further.

i totally disagree. a job that has been done with the proper switch wires looks alot more proffesional and no need for brown slieving. or people who forget to slieve the cable. just my opinion tho.

Fair enough but IMHO It's just as professional to sleeve, anyway with all switch-plates on & rose covers tightened the customer won't appreciate you going the extra mile ~ I suppose the next sparky will though.

 

[pennywise]

You shouldn't have to bell them out as 1 of the browns has an inner layer of white insulation. So when cut you can see a white ring below the brown outer insulation.

Show's how often I use the stuff cheers

 

[Had8Lives]

One reason for not using Twin Brown and Earth for switch drops is, if you want to modify it in the future you don't know which wire goes to the light.

 

[Hawk81]

One reason for not using Twin Brown and Earth for switch drops is, if you want to modify it in the future you don't know which wire goes to the light.

what??? how would you not know what wire goes to the light?