Chimney Wiring

[Pobz]

Hoping someone can help me here.

Have removed chimney for usual thing to stick TV etc in there, but got a couple of queries on the wiring

the consumer unit is right next to it and any nearby sockets are plastered in so no access to run a spur.

Can i add a 20AMP MCB to unit and run the 3 core 2.5mm to the socket in the chimney. Then from the socket run 3 core 1mm to a switch controlling 2 recessed lights (240V lights)

Or do i need to run 2 distinct separate circuits?

Option 1

Option 2

TIA

 

[securespark]

Is 1mm² rated at 20A?

 

[Pobz]

No thats what i think will trip it up its 10A i think

 

[securespark]

Cable ratings have to meet or exceed the CPD rating.

 

[Pobz]

2nd question applicable to either option are these ok as straight spurs from CU dont have to loop them back or anything?

 

[plugwash]

note that your first option would be fine if you used a FCU with a 3A fuse instead of the lightswitch and 2.5mm in place of the 1.5mm run from socket-switch.

if its 2.5mm on a 20A breaker there is no need to make it a ring.

note that being new cuircuits you are supposed to notify building control.

note also that you can take a spur off a ring at the CU and being part of an existing cuircuit this would not be notifiable (crazy isn't it).

 

[Pobz]

Cheers i hadn't thought of that.

Have bought a 5 & 20A MCB's now so will stick those in and run as option 2.

Its been a while since i did any wiring just needed to here someone else tell me it looked OK