Cooker hood - can I run it from the cooker switch?

[DNS1]

Hi chaps,

Very quick one for you.

I know I have to have an easily accessible switch for fixed kitchen equipment like the cooker hood, but can this be shared with another item of equipment?

Going to have a standard double pole cooker switch for the built in oven, but wondered if I can also run the hood from this too. Just thought maybe I could avoid having a separate switch cluttering up the area.

Cheers

 

[cagedanimal2010]

simple answer mate is no, spur it of the ring(or make SFS part of ring) and then it can have its own control unit.

Danny

 

[DNS1]

Cheers mate,

It's not a problem to add a FSU to the ring anyway.

 

[cagedanimal2010]

happy days then buddy!!

 

[DNS1]

Out of interest, would I be allowed to run the FSU for the hood off a spur from the cooker radial? (only the oven is electric these days hob replaced with gas, so the cable is hugely overrated for task)

 

[FAA Greenie]

In theory, and I'm sure I'll be corrected if I'm wrong. Yes you can, however the practicallities are a little awkward. If you have in a worst case scenario, a 10mm T&E in the cooker radial, you would then have to spur a further 10mm cable to the FCU to fuse it down to whatever you need for the hood. It would be a case of 'good luck with that'!!

 

[DNS1]

Cheers!

I'll give it a miss and just run it off the socket ring!

 

[Deleted member 26818]

In theory, and I'm sure I'll be corrected if I'm wrong. Yes you can, however the practicallities are a little awkward. If you have in a worst case scenario, a 10mm T&E in the cooker radial, you would then have to spur a further 10mm cable to the FCU to fuse it down to whatever you need for the hood. It would be a case of 'good luck with that'!!

Actually, it would be quite acceptable to use 2.5mm² or even 1.5mm² (depending upon loading and installation methods) from the cooker switch to the SFCU, as long as the cable length is less than 3m.

 

[DPG]

Wouldn't the new 1.5mm cable only be protected by the 32A cooker fuse though? Daz

 

[Deleted member 26818]

Wouldn't the new 1.5mm cable only be protected by the 32A cooker fuse though? Daz

Regulation 433.2.1 Except where Regulation 433.2.2 or 433.3 applies, a device for protection against overload shall be installed at the point where a reduction occurs in the value of the current-carrying-capacity of the conductors of the installation.
NOTE: A reduction in curent-carrying-capacity may be due to a change in cross-sectional area, method of installation, type of cable or conductor, or in environmental conditions.

433.2.2 The device protecting a conductor against overload may be installed along the run of that conductor if the part of the run between the point where a change occurs (in cross-sectional area, method of installation, type of cable or conductor, or in environmental conditions) and the position of the protective device has neither branch circuits nor outlets for connection of current-using equipment and fulfils at least one of the following conditions:
(i) It is protected against fault current in accordance with the requirements stated in Section 434
(ii) It's length does not exceed 3 m, it is installed in such a manner as to reduce the risk of fault to a minimum, and it is installed in such a manner as to reduce to a minimum the risk of fire or danger to persons (see also Reglation 434.2.1).

It is these two Regulations, that allow us to spur off of a RFC, without having to use an increased size of conductor, and why the maximum length for tails is generally restricted to 3m unless a switched fuse is used.

 

[GT1]

Guys.
Top thread.!
That's the thing with this line of work.
ALWAYS learning !!!
This is an absolute nugget of info, and one that has huge real-world application.

I have to put my hand on heart and say that I did not know about the 3metre rule for a reduction in load carrying capacity. !
I passed my regs 3 years ago and 2391 two years ago but never (knowingly) came across this reg.
Just goes to show that you have to keep your study up if you want to stay on the ball. !
Plus. I would MUCH rather work with some 1.5 than try to spur off with 10mm to an FCU. (which until today I would've done).!!
Cheers.

 

[DNS1]

Great stuff!

This is why I love this forum, I can ask a stupid question and learn loads from people's responses!

Thanks guys!

 

[ringer]

The main problem here is going to be getting a secure termination where you have a 6mm conductor and 1.5mm conductor sharing the same terminal.

 

[supertoad]

if 4/6mm cooker ckt, run 4/6 mm to sfu then correct size cable to cooker hood/check sfu fuse size[prob 3A]

 

[GLENNSPARK]

Actually, it would be quite acceptable to use 2.5mm² or even 1.5mm² (depending upon loading and installation methods) from the cooker switch to the SFCU, as long as the cable length is less than 3m.

yeah i was gonna say....where the hell`s he got that from?..lol..