what size cable for a boiler thermostat

[rjl]

hi,could anyone tell me the size of cable needed to wire in the reciever unit for a wireless programable thermostat please.it will be wired directly into the boiler but would like to know what size wire is needed.thanks

 

[RF Lighting]

1.0mm² will be fine.

 

[rjl]

thanks,i thought either 1.0 mm or 1.5 mm would be ok.just wondered, because the supply to the spur for the boiler looks like 1.0 or 1.5 mm but then from the spur to the boiler they have used 2.5mm... is this ok.thanks

 

[ajrobb]

If the boiler is connected through a fused connection unit, check the fuse. It might be 3A, which can protect smaller cables.