Lighting Circuit.. Surely This Isn’t Right?

[Stroppy]

Oops didn't read the date! It was on the front page so I thought it was quite recent. Never mind, that house has probably burnt down by now, from a 1.0 cable melting onto some newspaper in the loft!

 

[Engineer54]

Nah, ...It'll probably be good till the day the house get's an overall re-wire!!

 

[keniff]

Isn't it 66% diversity on lights on domestic? I know old post lol

 

[Stroppy]

Yes it is. I've never liked the idea of diversity on lights. In houses inhabited by rich and/or lazy people it is common to have all lights blazing all day and most of the night whether anyone's in the house or not. In my two-room hovel it is very common to have both candles alight at once, so no diversity here...

 

[Engineer54]

haha!! Are you saying that it's common for householders to have every lamp switched on a circuit, including exterior lighting?? I don't know what world your living in but it's not mine. Diversity ''always'' needs to be applied, especially in domestic installations, or you'll be asking the DNO for a cut out fuse of around 160+A.

 

[dagrat]

haha!! Are you saying that it's common for householders to have every lamp switched on a circuit, including exterior lighting?? I don't know what world your living in but it's not mine. Diversity ''always'' needs to be applied, especially in domestic installations, or you'll be asking the DNO for a cut out fuse of around 160+A.

not in my house, kids leave bathroom lights on , bedroom lights on, living room lights on.
my kids don't do diversity...........:coolgleamA:

 

[shocking_eg]

diversity ?!?!?! come on !

no probs mixing 1.0 and 1.5mm together.. just select overcurrent device suitable for the smaller CSA cable.

 

[shocking_eg]

plus the amount of LED's being installed now means you can have more lights per circuit.

dont forget the startup current on LED's though !

 

[Engineer54]

not in my house, kids leave bathroom lights on , bedroom lights on, living room lights on.
my kids don't do diversity...........:coolgleamA:

Well that would be across 2 circuits from your description here, up and down stairs circuits. .lol.!! If you let your kids go round switching every light switch on in the house, and leaving them on, then more fool you.

In domestic surroundings, it's unlikely that the lighting circuits will be drawing a fraction of the cables or protection devices rating!!