Cooker cable

[Anthony16090]

Can someone tell me about cooker cables, the in-laws have had a new kitchen fitted, but they have put the cooker on 2.5mm cable, and wired it in to the ring main off a switched fuse ???
the cooker is a range master, for some reason the kitchen fitters took the manual for the cooker ???
but I have download a copy, it states that with both ovens, clock and grill it's 7.5kw (the hob is gas)
the reason I ask is because on Saturday had family party, used the ovens and the fuse blown, not much fun when your half way cooking, I always thought cooker cables are 6mm.
the manual does say 2.5mm to 6mm but to me the lines point to the cores in the cable, if that makes sense

 

[telectrix]

totally unacceptable. any appliance > 2.2kW should be on it's own circuit, not the socket circuit. a dedicated 32A circuit wired in 6mm is required.

 

[gnselectricals]

totally unacceptable. any appliance > 2.2kW should be on it's own circuit, not the socket circuit. a dedicated 32A circuit wired in 6mm is required.

Is it not over 2kw cooking appliance only ?

 

[Risteard]

If it says 7.5kW then it needs to be bigger than 2.5mm cable

It is talking about the total connected load. Can the grill be energised at the same time as the double oven, for example? £100 says it can't be (after all the grill will be housed in one of the ovens).

The load will also cycle a lot as temperature is reached.

So we don't know the real load.

 

[Octopus]

It is talking about the total connected load. Can the grill be energised at the same time as the double oven, for example? £100 says it can't be (after all the grill will be housed in one of the ovens).

The load will also cycle a lot as temperature is reached.

So we don't know the real load.

We have a Range master and yes we can use all the elements at the same time as the grill is separate from the ovens !

 

[telectrix]

Is it not over 2kw cooking appliance only ?

nope. e.g. immersion heater - any appliance.

 

[Lazlo]

p425 Appendix 15 of BGB, 433.1.103 (iii), cookers, ovens and hobs rated over 2kW must be on their own dedicated radial circuit.
Immersions and space heaters are covered under 433.1.103 (ii)

Simples

 

[Anthony16090]

Hi again, sorry been working away.
had a sparky round while I been away, due to the wooden floor and the in-laws not wanting to take it up, the sparky has said he will put 3 fused Spurs in and spilt the cooker, is this safe ????

 

[Darkwood]

Hi again, sorry been working away.
had a sparky round while I been away, due to the wooden floor and the in-laws not wanting to take it up, the sparky has said he will put 3 fused Spurs in and spilt the cooker, is this safe ????

Are you saying he is going to add 3 fuse spurs to the existing ring and run 3 seperate supplies for each segment? ...

Either we don't have all the details here or this 'Electrician' is clueless, if the oven you have is in deed the one that was shown in a previous post then it needs its own dedicated supply, regardless of your parents not wanting the floor up. It needs doing right and if that means the floor up then that's what has to be done.

Appendix 15 of the regs expresses fixed loads exceeding 2kw should not be connected to the ring main socket circuit and should have their own dedicated supply - your oven is 7.3kw rated.

 

[Barrie Patrick]

AS OTHERS HAVE ALREADY SAID!!! This needs to be on its own radial circuit from the consumer unit to its isolation switch then onto the appliance NO CHOICE! NO NEGOTIATION!

The Max Load, which you've already tried and blown your ring mains Over Load Protection, is around 32Amps and generally the cable would be 6.0mm2 but depending on the length of cable used and where its installed correction factors may need to be applied and it could require a larger cable? Plenty of good sparkies on here get a local 1 to come and design your circuit.... beats having your house burnt down or someone injured.

 

[Octopus]

Can someone tell me about cooker cables, the in-laws have had a new kitchen fitted, but they have put the cooker on 2.5mm cable, and wired it in to the ring main off a switched fuse ???
the cooker is a range master, for some reason the kitchen fitters took the manual for the cooker ???
but I have download a copy, it states that with both ovens, clock and grill it's 7.5kw (the hob is gas)
the reason I ask is because on Saturday had family party, used the ovens and the fuse blown, not much fun when your half way cooking, I always thought cooker cables are 6mm.
the manual does say 2.5mm to 6mm but to me the lines point to the cores in the cable, if that makes sense

Oh dear. I would recommend you get another opinion from a decent sparky

 

[Lazlo]

Can't believe we're still on this-

p425 Appendix 15 of BGB, 433.1.103 (iii), cookers, ovens and hobs rated over 2kW must be on their own dedicated radial circuit.
Immersions and space heaters are covered under 433.1.103 (ii)

Read the flipping regs book, reading isn't really that hard, you're doing it now.........

 

[Octopus]

Can't believe we're still on this-

p425 Appendix 15 of BGB, 433.1.103 (iii), cookers, ovens and hobs rated over 2kW must be on their own dedicated radial circuit.
Immersions and space heaters are covered under 433.1.103 (ii)

Read the flipping regs book, reading isn't really that hard, you're doing it now.........

Problem is matey, that Kitchen Fitters don't have copies and think they know best!

 

[telectrix]

i must be lucky. the few kitchen fitters i have "worked with" know the score.

" i told you where the cables are... you damage, you pay, end of"

no problem.

 

[NDG Elecs]

Problem is matey, that Kitchen Fitters don't have copies and think they know best!

Oi Murdoch I fit kitchens too! :tounge_smile::tounge_smile:

 

[NDG Elecs]

Hi again, sorry been working away.
had a sparky round while I been away, due to the wooden floor and the in-laws not wanting to take it up, the sparky has said he will put 3 fused Spurs in and spilt the cooker, is this safe ????

There may be an alternate route to get the cable to where it needs to go. Get your own spark in to assess it I reckon. Sounds like the blind leading the blind with the, ahem, sparks who have been in.