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Induction Hob again

Former Community Member
Former Community Member
I hope that you don’t find me impudent but I am having difficulty finding an electrician to explain why they will not install the induction hob and double oven that we are looking to fit in our new kitchen.
We have chosen a hob 7.4 kW and oven 6.3 kW. The cooker radial circuit has 6mm2 cable with 40A MCB. The run is some 12 m. The house was built (converted) in 2002 and inspected last year (DPN18C). We cannot run an extra cable because the CU is separated from the kitchen without a horizontal floor or roof space and presumably runs the existing cable through the stud walls.
The kitchen fitting company electrician has visited but won’t carry out the work unless we sign an indemnity as it would invalidate our insurance and the appliance guarantee. He suggested instead two plug-in ovens which we could add to the ring main. I have contacted four other local electricians but they all use 13.7 kW means 59.7 A which means 10 mm cable and ignore my request to consider diversity.
Should I give up and accept the two oven solution or perhaps a gas oven?
Do you know of a way of finding someone who understands diversity?
Am I simply wrong?

Parents
  • Former Community Member
    0 Former Community Member
    David – thank you. When I tentatively posted my questions it was to seek advice from trained and experienced members of the Institution. I was looking for evidence either for or against my assumption that the installation was both safe and sensible. If electricians with years of experience had evidence or had come across real life problems it would have helped me to decide whether to persist with our choice. None of the replies has presented any evidence of problems though some have suggested caution. It is troubling to find that each of the three kitchen fitting companies we approached were aware that electricians would expect an extra cable to be laid for our choice of cooking appliance (we didn’t find this out until we had made our choice). The electrician who made a site visit’s comment about indemnity and guarantee was made after I had questioned his reasoning and I took it to be a threat or attempt to intimidate. I have sent email requests for a quote giving a brief outline of our request to 13 local electricians who have websites. Four have replied. Three told me that it wasn’t possible. One was prepared to consider it and seems to have backed out once I gave more details. Most householders would simply accept the statement from the electrician – we did not have that option.  Those householders will have wasted both money and resources. I have found one electrician who has said he agrees with my assessment of the problem whom I am hoping will call back on Tuesday. If he doesn’t I have a lot more research to do to find someone who will accept the job.
    I am not an electrician, I have not been trained, not passed an exam nor do I have years of experience. Questioning someone who does must be done tactfully if you want them to actually do the job. I hope that my question has allowed David’s experience and knowledge to be more widely shared throughout the community.
    My values for the MCB tripping time were taken from https://docs.rs-online.com/f0bf/0900766b8047c04e.pdf as we have a Wylex SBB40 fitted. I didn’t know about the source that you quote.

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  • Former Community Member
    0 Former Community Member
    David – thank you. When I tentatively posted my questions it was to seek advice from trained and experienced members of the Institution. I was looking for evidence either for or against my assumption that the installation was both safe and sensible. If electricians with years of experience had evidence or had come across real life problems it would have helped me to decide whether to persist with our choice. None of the replies has presented any evidence of problems though some have suggested caution. It is troubling to find that each of the three kitchen fitting companies we approached were aware that electricians would expect an extra cable to be laid for our choice of cooking appliance (we didn’t find this out until we had made our choice). The electrician who made a site visit’s comment about indemnity and guarantee was made after I had questioned his reasoning and I took it to be a threat or attempt to intimidate. I have sent email requests for a quote giving a brief outline of our request to 13 local electricians who have websites. Four have replied. Three told me that it wasn’t possible. One was prepared to consider it and seems to have backed out once I gave more details. Most householders would simply accept the statement from the electrician – we did not have that option.  Those householders will have wasted both money and resources. I have found one electrician who has said he agrees with my assessment of the problem whom I am hoping will call back on Tuesday. If he doesn’t I have a lot more research to do to find someone who will accept the job.
    I am not an electrician, I have not been trained, not passed an exam nor do I have years of experience. Questioning someone who does must be done tactfully if you want them to actually do the job. I hope that my question has allowed David’s experience and knowledge to be more widely shared throughout the community.
    My values for the MCB tripping time were taken from https://docs.rs-online.com/f0bf/0900766b8047c04e.pdf as we have a Wylex SBB40 fitted. I didn’t know about the source that you quote.

Children
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