advice please

[danhowell]

Hi,
if I want to install 2 x 3kw fan heaters in to a room on a Radial circuit with a 25metre span,
I would use:
2x 3kw heaters
2x 13 A fused isolator switches
1x junction box
1x 32A mcb
25 mtrs 4mm twin and earth.

would you agree?

 

[Dan]

Hi Dan. I'll shift this post the right area of the forum once I've granted you access.

 

[Baker1988]

Hi a 3 kW heater will pull about 13.4 amps so that is over you 13amp isolator switch also why would you need a junction box for this? I you should just go in the first isolator then out into the second isolator so no need for a junction box

 

[danhowell]

OK, thanks for this, so I will use a min 15a rated isolator switch, not fused and, as there is a nice big roof access and the heaters will be fitted high (30cms from ceiling) at opposite ends of a room so I was going to use a junction box in the roof, running a 4mm cable to each isolator and on to each heater. What do you think? Many thanks for this