Questions about light spurs

[ThomsoK]

Hi

A few leccy questions, any advice greatly welcomed:

1. I'd like to spur from my kitchen light to provide a light in the washhouse on a separate switch. The kitchen light already has a spur to provide an additional light off the kitchen light switch. Can I take both spurs from the same light? P.S. The kitchen lights are 240V downlighters so I was going to use a 4-way junction box (which can fit the 6 cables?).

2. This takes the total lights on the circuit to 9. I believed 8 was the nominal max although more could feasibly be used based on total power loading for 240V on a 6A circuit. Is 9 lights allowable by code?

3. The light in the washhouse is a batten holder type and needs mounted to a bare stone wall. Can I fix it direct to a piece of plywood that is fixed to the wall, or is this against fire code?

Or is there a different/easier way to do any of this?

Many Thanks

 

[Taylortwocities]

You have missed off some vital information.

What is the wattage of:
a) the lights that will be added
b) the wattage of ALL of the lights on the lighting circuit that you would be added to ( I mean that the lighting circuit that feeds the kitchen may also feed other lights).

We than add all of the wattage togethe and then see if its more than the fuse value. In a domestic application, we can use a little trickery called diversity - this lets you get a bit more of a pint into a pint pot.

Give us the info and we can tell you more.

Sure, you can fix the batten lampholder direct to the wall, or on a piece of plywood.

Point of order:. The term "spur" usually relates to an additional circuit to a ring final. Lights are not usually ring final circuits.

 

[RF Lighting]

It is ok to fit proper loop in type batten lampholders directly to a normally flammable surface (such as wood).

You should not fit the cheap type with exposed terminals at the rear.

 

[ThomsoK]

You have missed off some vital information.

What is the wattage of:
a) the lights that will be added
b) the wattage of ALL of the lights on the lighting circuit that you would be added to ( I mean that the lighting circuit that feeds the kitchen may also feed other lights).

We than add all of the wattage togethe and then see if its more than the fuse value. In a domestic application, we can use a little trickery called diversity - this lets you get a bit more of a pint into a pint pot.

Give us the info and we can tell you more.

Sure, you can fix the batten lampholder direct to the wall, or on a piece of plywood.

Point of order:. The term "spur" usually relates to an additional circuit to a ring final. Lights are not usually ring final circuits.

Hmm yes I see what you mean. Oops. The light circuit is a normal radial and includes 6 normal pendant lights, 2 kitchen downlighters and 1 bathroom light. So I guess 6x100W + 3x50W = 750W total even if I use 100W bulbs in the pendants. I reckoned the max for the 6A MCB would be 1440W so am I OK or are you supposed to have a certain size of margin to the max allowable? Or am I barking up the wrong tree?

P.S. As for my 'spurs' basically what I want to do is run 3 cables from the kitchen light junction box (I've already got the switch cable and 2 circuit cables connected in), 1 to power the first kitchen light, 1 to power an additional light controlled by the same kitchen light switch and 1 to supply a feed for a light in the washhouse on a separate switch. Is this kosher and/or the best way to do it? I thought you could extend a lighting circuit this way, sort of the lighting equivalent of a spur on the ring mains. Can you give me any advice?

Thanks again