junction box on boiler

[rockinter]

Hi,
I want to fit a room thermostat to my boiler. It is already connected to a programmer. Only problem is that the wiring isn't long enough to connect. So i am thinking of using a junction box.

I have 30 amp junction box, will that be okay to use, to give power to the boiler and wireless room thermostat, or do i need a 3 amp junction box?

 

[PrenticeBoyofDerry]

30Amp Junction box will do the job, a bit over rated for amps but will do!

 

[rockinter]

thanks