another loop in out question

[chrisreid186]

room one has 4 down lights and 1 switch
room two has 2 down lights and 1 switch
consumer unit has no spare ways

3 options on how to wire

option 1 : loop in and out from switch (3 cables at switch)

feed from mcb >>> light switch room 1 >>> room 1 lights
>>> light switch room 1 >>> light switch room 2

option 2 : loop in from 1st light (requires two joint box's at 1st lights )

feed from mcb >>> 1st light room 1 >>> 1st light room 2
>>> 1st light room 1 >>> light switch room 1
>>> 1st light room 1 >>> rest of lights room 1

option 3 : two feeds from the same mcb to each room

feed from mcb >>> light switch 1 >>> room 1 lights

feed from mcb >>> light switch 2 >>> room 2 lights

Q1)which way would you wire it????
Q2)would option 3 be a spur from a spur or bad practise?? i'm thinking it would be ok as neither would be able to pull more then 6 amps

 

[SirKit Breaker]

Loop in as normal at first light, then parallel connections to other lights in same room, take loop to next room and do the same. Job done.

 

[Deleted member 9648]

As they are downlights I'd feed the switches and reduce cables at the lights to two max............making sure boxes are of adequate depth.......(preparing for flak now)

 

[chrisreid186]

i'm in favour of option 1, no joint box's has to be a good thing , and majority of downlights only accept 2 cables,

however when doing x1 center light's loop in/out from light wins everytime

 

[morph]

use the switch and joint the neutrals

 

[chrisreid186]

what's your views regarding 3??

 

[SirKit Breaker]

i'm in favour of option 1, no joint box's has to be a good thing , and majority of downlights only accept 2 cables,

however when doing x1 center light's loop in/out from light wins everytime

If you use a Helacon you can get up to 12 way I think.

 

[morph]

only if i really have to , prefer to loop in the switch

 

[topquark]

Option 4, go wireless

 

[sp4rk13]

Put a bit heatproof flex on your downlight, just incase the pvc comes in contact with any hot part of the light fitting. Joint box at each fitting. As many wires as you want.

 

[Adam W]

I'd go for option 1 to avoid joint boxes. You could do option 3, but it might be better to reserve that option for a future emergency.

 

[davelerave]

option 1

usually

i wouldn't bother with option 3 - 'bunching' wires at mcb unless you have to

 

[Paul.M]

Option 3? You can have 2 circuits on one mcb but the 2nd circuit is classed as a spur and can only used to feed one fitting, so may not be an option for you.

 

[londonlec]

Option 3? You can have 2 circuits on one mcb but the 2nd circuit is classed as a spur and can only used to feed one fitting, so may not be an option for you.

Are you sure?

 

[londonlec]

Option one, 35/47mm back box.