fcu from cooker circuit

[pieman]

I have recently had my house flooded, my insurance company have redone my kitchen but changed the location the dishwasher will be in to get it closer to the plumbing. I need to get power to the dishwasher but the socket above has already been spured (more than once and not by me) so don't want to go off that (insurance company been unhelpful). No other sockets near by there is however a cooker outlet (isolator switch with 13 amp socket) above if I run 6mm cable (same as cooker circuit) to a fused connection unit then down to 2.5mm am I breaking any regs? Cant see an issue with it apart from been 'not the done thing' but I wouldn't want to overlook anything. If its in anyway unsafe I will call in someone qualified (i'm currently training) Thanks in advance

 

[telectrix]

although unconventional, i can;t see a problem.

 

[westward10]

Nor do I, why did they relocate dishwasher and not move plumbing.

 

[Octopus]

What's the rating of the cooker currently connected?

 

[valleybilly]

Extend the dishwasher cable to the cooker outlet socket maybe ? or . If the mcb on the cooker radial is 32 amp you can extend in 2.5mm not 6mm upto 3 mtrs without issues regs wise 433.3 i think on memory just like a spur & put it on your minor works cert for future ref . surface installation under plinth no rcd needed meth c

 

[pieman]

Thanks for all the replys. The mcb is rated 32amp, also it is protected by a 30ma rcd. We discussed moving the dishwasher closer to the water supply but didn't expect the socket above to be spured (novice mistake) I had also originally hoped they were doing the full kitchen installation not leaving bits for us to finish.

 

[Octopus]

What's the rating of the cooker currently connected?

I'll ask again.....

You can't add to the load if its already close to its limit and most cookers should be on a dedicated circuit.........

 

[westward10]

I have a theory, he will only use the dishwasher after he has done the cooking and eating.

 

[Octopus]

I have a theory, he will only use the dishwasher after he has done the cooking and eating.

Try running that past your scam assessor next year... I doubt it will go down well.

 

[pieman]

I'll ask again.....

You can't add to the load if its already close to its limit and most cookers should be on a dedicated circuit.........

sorry I misunderstood your question. 5.8kw for all hobs can't seem to find any specs on the oven and grill but will keep looking. Oven is in storage so going on online info on the same model

 

[pieman]

plus 2kw grill, 1.8kw oven so 40amps total consumption.

 

[westward10]

Try running that past your scam assessor next year... I doubt it will go down well.

True though.

 

[Octopus]

plus 2kw grill, 1.8kw oven so 40amps total consumption.

Then add 5A for the socket on the isolation switch plus 13A for the dish washer......

 

[pieman]

Then add 5A for the socket on the isolation switch plus 13A for the dish washer......

thankyou, can a diversity factor be applied to this? If not back to the drawing board

 

[valleybilly]

dedicated curuits are best practice not yellow book.

 

[valleybilly]

if you extend the dishwasher lead to the cooker outlet unconventionaly i know / then by use of the 13 amp plug u have discrimination. woollies n ars come to mind

 

[westward10]

Are you likely to use the cooking appliances and dishwasher at the same time.

 

[pieman]

Are you likely to use the cooking appliances and dishwasher at the same time.

Unlikely but possible, however I have never in the time I have had the cooker had 4 hobs, grill and oven running at the same time. Usualy at most doing a sunday roast would be 2 hobs at 14.16amps and the oven at 7.5amps. The cable is clipped in an uninsulated ceiling and wall on a run of 4-5 meters. I'm new to this so respect and will follow the advice of if its a risk don't do it. Will have to think of another way, just didn't want to get into ripping tiles ect off if I didn't need to.

 

[westward10]

Unlikely but possible, however I have never in the time I have had the cooker had 4 hobs, grill and oven running at the same time. Usualy at most doing a sunday roast would be 2 hobs at 14.16amps and the oven at 7.5amps. The cable is clipped in an uninsulated ceiling and wall on a run of 4-5 meters. I'm new to this so respect and will follow the advice of if its a risk don't do it. Will have to think of another way, just didn't want to get into ripping tiles ect off if I didn't need to.

Why not temporarily plug it into the cooker control unit socket and see what happens, if you have no problem you have a solution, go with your original method.

 

[pieman]

Why not temporarily plug it into the cooker control unit socket and see what happens, if you have no problem you have a solution, go with your original method.

If I have a problem I assume its just an mcb overload rather than cable overload issue? Thanks for your help. I'm new to this forum and everyone has been very helpful

 

[pieman]

Probably should have added its a 3 amp slimline dishwasher as well.

 

[Des 56]

If you were designing for the appliances as a new install,you would be wise to follow the guides that recommend a dedicated circuit for the cooker,with a separate radial and perhaps off the local ring to the dishwasher

However, you are working with what is existing and you may consider the need to deviate from those recommendations that are in the guides,if you can still ensure safety

The use of a dedicated circuit for a cooker is a recomendation,follow that recomendation and you won't ever go far wrong,however,a recomendation does not mean"You must"

The first thought would be that the 6mm radial will most probably have already been de rated by the use of a 32 amp mcb at the supply end,depending on installation method,overload may not then be a problem (other than a nuisance factor if the mcb happened to trip occasionally if it was overloaded for a period of time)

Your opening suggestion,although not a standard arrangement appears to be a suitablee compromise,however,the cooker control could be changed to a straight DP isolator,doing that will reduce the possible unknown extra load from the existing cooker control integral socket

In short,if the posted information given is correct,it would not cause me nightmares if it was necessary to adapt such an arrangement to my own kitchen

 

[sparksburnout]

19A for the hob/oven after diversity, plus max 9A for the dishwasher = 28A top whack whats wrong with that on a 32A 6mm?? Plus Westies right they probably never on together. I wouldn't worry about the Scam assessor the last one I had also had a bit of common sense.