2kw heaters

[james king]

Hello currently rewiring a flat. They have ask for us to install electric panel heaters.

Now I have not really done many be for. The ones I have done I have always ran then from there own cct on a 16a mcb (3kw)....


They have asked for 2 kw heaters in each room. How many of you would put two 2kw heaters on one cct from a 20A mcb. Load would be 17ish amps .

I don't see a problam with it. Before you all say we need more info. Total run 10m... Ran in massonary, so clipped direct.

Or would you just run each heater of it own radial ??

 

[thekingiam]

i would run on seperate circuit just because if a problem occured they would be without any heating.

 

[thekingiam]

not much expense in seperating them?

 

[james king]

Will require an additional cu. more cable and bigger trunking. Sets of 3 cct with 2 heaters on each

 

[Hawk]

I would put each one on its own circuit. If not how about a 6mm radial with 3 heaters per circuit. So 2 circuits 32A mcb for each?

 

[james king]

2.5mm radial 2 heater 2KW each at 17A total .... 20A mcb i would rather. hate working with 6mm in domestic unless necessary. cookers ect

 

[Hawk]

Yeah 2.5 would be easier. Have u got 3 ways on the board?

 

[BlueToBits]

6x 2kW heaters will draw 12kW. Is the supply big enough? - presumably an electric only flat with a cooker, water heater and shower?

 

[dim_bulb]

Is there any diversity to be applied to the heater?

I.e. they won't all be on full. Don't have book to hand

 

[MDJ]

The worry is the overall load as mentioned, forgetting that for 2 seconds, if it was just 2 heaters only then you would be safe at 2 heaters on a 4mm2 cable on a 20 amp MCB, even allowing for insulation etc it would be more than likely adequate, but now getting back to potential load, as you have mentioned there will be 2 in each room, how many rooms are there?