Electric Kitchen Cooker and Indusction Hob Advice Needed for Updating Kitchen


Postby jamieweb » Mon Apr 13, 2015 1:45 pm

Hi,
I am getting my kitchen updated and just want to make sure before I call in any electricians what, if anything, needs to be done to allow us to have the below electric cooker and induction hob.

The house is 6 years old so I'm hoping everything is up to date....but we'll see...

The hob is 7,200 W = http://www.siemens-home.co.uk/our-products/cooking/hobs/EH879SP17E.html
The cooker is 0.79kwh = http://www.currys.co.uk/gbuk/built-in-appliances/built-in-cooking/ovens/single-ovens/hotpoint-shs33xs-electric-oven-stainless-steel-10015802-pdt.html

I have attached the document what came with the 'house' which looks like it contains all the details.

Image: http://postimg.org/image/9mdj7g131/full/

Any help would be appreciated.

Thanks
Jamie
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Postby collectors » Tue Apr 14, 2015 6:46 am

For the oven you are on the border line as 7.2kw is around 31amps, but it is a 6 mm cable that is rated at 41amp, so you could replace the fuse to a 40amp version. (fuse cost about £5 + Fitting) The only thing now, is the oven on another circuit/fuse?. Its only a low wattage oven but i personally not a lover of using the oven circuit for both the hob & oven.
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Postby jamieweb » Tue Apr 14, 2015 8:05 am

Hi, Thanks for your reply.
So you mean plug the oven (which already has plug on end) into a different socket, separate to the hob?

When you say change the fuse to 40amp, is that within the fuse board or in the cooker switch on the wall near the hob/oven?

But the 6mm cable is ok for the hob is it? That's a relief, didn't fancy rewiring!

I am a complete novice when talking electrics, but can I ask how do you know I wouldn't already have a 40amp fuse?

Thanks again :)
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Postby ericmark » Tue Apr 14, 2015 10:38 pm

There are reference methods 100, 101, 102, and 103 plus A, B, C, D but there is no reference method 1. So the installation certificate tells us very little. However in general we have diversity which allows for a cooker to be supplied from a overload which seems at first glance to be too small.

With an induction hob very little power is wasted so to maintain 4 pans at boiling point uses less energy with induction hobs than with other electric hobs so even though it may seem a bigger hob in real terms it uses less power.

My stand alone cooker is rated at around 60A but has never tripped the recommended B32 MCB although it can draw 60 amp it can't draw it for long enough to trip the overload. Even if it did the only harm is cooling fans on the cooker stop and food in the cupboards either side could get too hot.

So in real terms you have no problem with the units you have selected,

The only real problem is lack of control. Induction hobs react in seconds so when a pan starts to biol over there is no need to move the pan you just turn off the heat. However touch controls can't be operated in seconds if often takes multiple touches to turn off the heat by which time the pan has boiled over. Knobs work far better.

Also digital displays look great from above. But children or people in wheel chairs can't see the display because of the angle of view. Again knobs work far better.

Learn from my mistake and select a model with knobs. I now have one with knobs and it is so much easier to use. I had not realised the problem until my mothers was fitted and she simply could not use it in a wheel chair and it had to be ripped out and replaced.
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