HOB Flex or not ?

[dal5band]

A lot of posts mention connecting a 6KW hob using a radial 32amp cooker circuit with 6mm twin&earth cable but I cannot find any reference to the actual lead that goes from the wall cooker connector to the hob itslef.
As far as I can see 6mm or even 4mm flex is not generally available so I persume the hob lead used by most sparkies is just twin&earth ?
One supplier suggested 2.5mm heat resistant flex which can go up to 25amps ?

 

[sparkyjr]

yes normally use twin & earth to connect to the hob, the heat reistant cable is generally inside the hob taking care of the connectivity to the elements etc via the stats.

 

[Jason1961]

Watch clearances on electrical hobs re appliances underneath.
Hobs get very hot on their underside and the spacing requirements.

FTE is the standard cable as mentioned, is stranded & flexible.

Standalone cookers can use Butyl flex (high temp) or HO7 flex (where
permitted) in sizes up to and beyond 6mm, but it costs £10 a meter.
Hence unsurprisingly FTE remains the standard choice.

 

[dal5band]

That's what I decided - FTE. All the instructions say use 6mm H05 RRF which I think is the rubber flex but when I asked the electrical wholesaler they never heard of it in 6mm.

 

[Jason1961]

For those after Butyl 6mm 3-core.
www.tlc-direct.co.uk can special order it.
Otherwise they carry 35A 4.0mm in stock.

Alternatives are sound & vision suppliers.

www.warehousesound.co.uk
HO7 6mm 3-core £2.95/metre.
HO7 10mm 3-core is about double that in price.
Min order, postage & vat apply.

www.stagepoint.co.uk/Sales_cables.htm
HO7 6mm 3-core £1.99/metre.
HO7 10mm 3-core £4.48/metre.


In some situations a flex can be preferable.
Eg, if regular cleaning of a freestanding cooker requires it to be
moved a lot - or if on rollers & "shuffles" with door open/close.
Eg, if there is an internal corner, even with inches of clearance
it is not ideal for rigid FTE cable - it is not a proper flex.
Seen too many standalone cooker-drops in FTE kinked & mangled.

Just for the record in case someone ever wants to find it.
Stuff goes up to 381 Amp sizes... guillotine is much simpler.