10 amp lighting MCB

[Guitarist]

Is anyone using 10 amp MCB's with 1.5mm for domestic lighting circuits yet (as per electricians guide to building regs) or are most of you still going with 6 amp?

Wondered if anyone had come across any lighting switchgear not rated at 10 amps

 

[ackbarthestar]

I've installed a couple in the past.

Yes, I agree, you do need to watch out for the cheaper B&Q type light switches rated at something other than 10A.

 

[Baker1988]

So do all domestic lighting circuits have to be 10 amp now?

 

[malcolmsanford]

Most BS 67 ceiling roses are rated 6amp only

 

[malcolmsanford]

So do all domestic lighting circuits have to be 10 amp now?

No .............................as the designer you decide

 

[telectrix]

and dont forget, those switches have only to carry the load of whatever light/s they control, not the whole circuit load.

 

[telectrix]

back to the 12 x 50watt downlights again. LOL.

 

[ackbarthestar]

I remember having this debate back in 1990. A chap stated that all lighting cables should be 1.5mm2 to which I showed him the regulations and proved for the basic lighting circuit covering a nominal 12 GLS 100W lamps (we used to use them once upon a time!) a 6A MCB with 1.0mm2 T&E was sufficient .

With the modern LED lighting you could probably tripple that number of outlets without undue stress to the lighting circuit, not so with 50W Halogen downlights

 

[Guitarist]

Personally, I like 1.5mm on lighting circuits. I have found it to be far more robust than 1mm. Just my preference.

 

[Amp David]

For some reason I always use 1mm for switch drops. Don't know why, just the way do it.

 

[telectrix]

For some reason I always use 1mm for switch drops. Don't know why, just the way do it.

only because you can't be arsed to mark the switch wire. LOL.

 

[Amp David]

Could be, or I'm a tight arse

 

[mogga]

hotel im working in has just had a visit from someone to look at their energyefficiency and any improvements that can be made His first thing mentioned was my fav things HALERS LED for replacing halogens and also the 2x26w thorn chalice type fitting now has an LED equivelent He said they also mention in passing on the report how LEDs pull less current than halogens hence create less hot spots in trunking,conduit systems

 

[Guitarist]

For some reason I always use 1mm for switch drops. Don't know why, just the way do it.

Now if you were talking 1mm flex, I'd be with you there. Think how much easier wiring would be if it was all flex...twin bootlace ferrules for ring finals, no fighting with shallow back-boxes...

 

[Octopus]

1.0mm on two way lighting switching everytime