Questions about a convector heaters?

[gophil5]

Hi,

I have been ask to install a couple of convector heaters to a small shop.
Been on the dimplex website and a couple of 3kw WFE That are suitable.
Am after a bit of advice of installation and cable/mcb's.

Plan to install and run a radial with 13amp local fcu's. supplied from a 6mm pvc. Is it ok to supply this from one radial circuit and runoff one mcb with RCD protection? Istallation will be clipped direct through the basement to the c/u. about a run of 15metres.

Just wondering if anyone has any suggestions about this install.

 

[AndrewMgan1976]

You might struggle to get 2 x 6mm cables into the connections of the FCU.

 

[gophil5]

Good point. Any suggestions?

 

[AndrewMgan1976]

You could take it to a rotary isolator switch then to a FCU.

 

[aptsys]

You can get 2x6mm conductors into an MK FCU, so you should be ok with your original plan

 

[Des 56]

Permanantly connected heating appliances should be supplied by their own dedicated circuit if they are part of a comprehensive heating installation



The above from the on site guide may apply to your system

The way I would wire them is via a dedicated radial in 2.5 with a 16 or 20 amp mcb for each appliance and switched fused spur local isolation

 

[ringer]

... via a dedicated radial in 2.5 with a 16 or 20 amp mcb for each appliance and switched fused spur local isolation

an mcb for each appliance Des?

Surely it would be a single 32A mcb? (single circuit = single mcb)

Or am I missing something?

 

[Sintra]

Agree with Des.

16A or 20A radial circuit for each heater.

 

[ringer]

I must of read it wrong. But why install a separate radial for each heater? What if there isn't room in the CU?

 

[gophil5]

Sernario is that it is a small cafe. The combi is been taken out and to replace Iaminstalling two dimplex wfe 3kw convector heaters.
The c/u isn't in the same area, its actually down in thebasement. Cable length about 15m max ( prob over estimated more like12 but prefer tobeon safe side).
Idea was to run a 6mm pvc T+E off a rcd protected c/u to fcu locally fused at 13amp asper manufacturers recommendations.
Looking at 17th eduition section 753 nothing really applies as its more to do with ceiling and floor heating. Section 701 and 705 refer to agriculture and bathrooms.
Due installtion factors was hoping that a single radial would be adequate. But have posted this to seeif anyone has any other suggestions, or if I am missing something.