Multiple 2way switching

[P.S.]

Working out the kitchen lights, I'll have 6 lighting zones. Probably look to use the MK grid system for 6 switches.

I was looking to extend the switching capability to the other side of the kitchen near the back door.

As is usual a 4core cable between the individual switches would suffice. Great for 1,2 or 3way... But was thinking that bunching six 4core cables together is a bit wasteful when only 3cores per switch and one overall earth would be needed... would it be ok to use one or more multicore cables, or is the correct way, individual 4core cables ?

And whilst on the subject, same goes for using twin and earth to the switch, really only need 2conductors for the switch and one overall earth ? Again, can a multicore cable be used, and if so, a pointer to which and where would be good..


Help/advice appreciated

 

[toasty]

I take your point.

I'd be inclined to use conduit and singles (individual wires) that way you can indeed have a single earth.

Also consider the 'alternative' way of wiring 2way lighting, where you run the live to common on switch one. Use common on switch 2 as the swtiched live, and use a 2 cores to connect 1 and 2 of both switches together. This would be ideal for you, as assuming all the lights are on the same MCB, you need only run 1 live to one bank of switches. This will really save you copper.

Hope this helps
Dan

 

[P.S.]

QUICK REPLY !

Ah yes, conduit and "singles" That's gotta be better than six 4cores !

6x4core = 24 conductors and 6xthick outer sheathing.
6x3singles + 1 earth = 19 conductors and conduit.

As for the "alternative", any chance of a schematic ?

Thanks

 

[toasty]

Just drew you one chief!

Untitled

• toasty
• 12 Jan 2009
• 1

 

[Spark123]

Take a look in the wiki, there is one in there too.

 

[P.S.]

makes sense, cheers