Wiring up 8 x 230v 35w downlights

[custie86]

Hi all, this will be my 2nd post as a member.

I want to replace my existing pendant lights in my living room with 8 x 35Watt GU10 led downlights. Was just wondering about the best method of wiring these together so they can be operated from a two way dimmer switch. Ie: In two groups of four.

Really appreciate any help with the above.

Cheers!

 

[Deleted member 9648]

Maybe I have misunderstood. I was under the impression that a homeowner can make additions to an existing lighting circuit without notifying building control.

I didn't say it had to be notified to BC, but that it has to be carried out in accordance with 7671, which means testing and certification.

 

[custie86]

Hi Murdoch, Yes RCD protected. I know a plasterer who will do the work for next to nothing. Mates rates n all. As 123 mentioned without the 2 way switch I could easily do the work but I'm unsure of how to wire it for the 2 way switch for 2 x 4 downlights.

 

[buzzlightyear]

Hi Murdoch, Yes RCD protected. I know a plasterer who will do the work for next to nothing. Mates rates n all. As 123 mentioned without the 2 way switch I could easily do the work but I'm unsure of how to wire it for the 2 way switch for 2 x 4 downlights.

I was waiting for this one, don't tell him pike .

 

[Dave OCD]

Ok Custie, am I right in thinking that the two existing pendants are switched on together ?
If so the pendant nearest the switch will probably have 3 cables, a feed in, a switch wire and a switched live & neutral to the far pendant. I'd replace the switch wire with a 3 core and CPC giving two switched returns and install a MF junction box above where the pendant with 3 cables is now. Then just run a new T&E from there to each bank of lights looping in and out, the s/l and neutral to the end of circuit light can be replaced or used to feed the first downlight on one of your 2 banks.

 

[buzzlightyear]

Ok Custie, am I right in thinking that the two existing pendants are switched on together ?

Hi Murdoch, Yes RCD protected. I know a plasterer who will do the work for next to nothing. Mates rates n all. As 123 mentioned without the 2 way switch I could easily do the work but I'm unsure of how to wire it for the 2 way switch for 2 x 4 downlights.

If so the pendant nearest the switch will probably have 3 cables, a feed in, a switch wire and a switched live & neutral to the far pendant. I'd replace the switch wire with a 3 core and CPC giving two switched returns and install a MF junction box above where the pendant with 3 cables is now. Then just run a new T&E from there to each bank of lights looping in and out, the s/l and neutral to the end of circuit light can be replaced or used to feed the first downlight on one of your 2 banks.

say no more!

 

[buzzlightyear]

any body in Liverpool to give a trainee a hand, in the far off land for a jam butty !

 

[westward10]

34 posts and we got there.

 

[Deleted member 9648]

As it comes under part P you will have to carry out the work in accordance with Bs7671. Which means testing and certification in accordance with Bs7671. Failure to do so is against the law.

I note DaveOCD disagrees with the necessity to carry it out in accordance with Bs7671?

 

[Toneyz]

say no more!

We're just guessing the existing maybe some pictures of the existing pendants and switches better advice could be given.

 

[GeorgeCooke]

Hi Murdoch, Yes RCD protected. I know a plasterer who will do the work for next to nothing. Mates rates n all. As 123 mentioned without the 2 way switch I could easily do the work but I'm unsure of how to wire it for the 2 way switch for 2 x 4 downlights.

You don't need a 2 way switch. You need 2 single way switches. They may be on one plate. Lets call it a dual switch, or in your case a dual dimmer.

 

[custie86]

Ok Custie, am I right in thinking that the two existing pendants are switched on together ?
If so the pendant nearest the switch will probably have 3 cables, a feed in, a switch wire and a switched live & neutral to the far pendant. I'd replace the switch wire with a 3 core and CPC giving two switched returns and install a MF junction box above where the pendant with 3 cables is now. Then just run a new T&E from there to each bank of lights looping in and out, the s/l and neutral to the end of circuit light can be replaced or used to feed the first downlight on one of your 2 banks.

That was the answer I was looking for Dave and appreciate you taking the time to explain it to me. Much appreciated, Pal.

 

[custie86]

Thanks guys for all input. Means a lot.

 

[Dave OCD]

I note DaveOCD disagrees with the necessity to carry it out in accordance with Bs7671?

No I disagree with the work being notifiable under Part P which I'm sure you know. Unfortunately there isn't a partial disagree button.

 

[Deleted member 9648]

Two disagree now that domestic work comes under part P.
edit. I never said it would need notifying, but compliance with part P is still required, and as such it will require testing and certifying in accordance with Bs7671.

 

[Dave OCD]

That was the answer I was looking for Dave and appreciate you taking the time to explain it to me. Much appreciated, Pal.

Happy to help mate especially as you're in the trade, if any other advice or clarification is needed don't hesitate to ask.