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Topic Title: Seperate oven and hob
Topic Summary: One cct?
Created On: 22 July 2013 07:10 PM
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 22 July 2013 07:10 PM
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SherlockOhms

Posts: 320
Joined: 05 April 2011

Chaps,

A tricky kitchen install.
There is an existing 6mm feed for the oven which I can reuse.

There is to be a seperate induction hob a few meters away from the oven.

Can I pop them both on the same cct? They would be if they were mounted together?

S.
 22 July 2013 07:38 PM
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stateit

Posts: 2132
Joined: 15 April 2005

I'm thinking the rating of most induction hobs is around the 8kW mark...

The rating of an oven/grill is about 3kW...

I've yet to see a combined induction hob/electric oven.

I've clamp metered an induction meter and they are true to their rating... I wouldn't want thetwo of them on a 40A breaker on Xmas day. Or when my better half is doing one of her big cooking sessions for some other booger's party, come to that.

Manufacturers guidelines...

-------------------------
S George
http://www.sg-electrical.com
 22 July 2013 08:35 PM
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geoffsd

Posts: 317
Joined: 15 June 2010

Yes, they will be fine on 6mm and 32A as is nearly every cooker in the country.
 22 July 2013 09:53 PM
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ebee

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If you compare to the old traditional cooker (essentially oven, 4 ringed hob & grill) then what difference should it make if the 4 ringed hob was separate from the oven?
It`s the loading which is important.
The standard old first 10A plus 30% of remainder plus 5A if kettle has stood the test of time for most installs and that would not make most of us worry at 13KW anyway.
So, unless you expect particularly heavy usage for some reason then probably not a problem I would say.
(13KW is an old "rule of thumb")

-------------------------
Regards,
Ebee (M I S P N)

Knotted cables cause Lumpy Lektrik
 22 July 2013 10:22 PM
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leckie

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And that was usually hanging on a 32a mcb. Or a 30a rewirable.
 23 July 2013 07:28 AM
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SherlockOhms

Posts: 320
Joined: 05 April 2011

It wasn't so much the loading I was considering, more the arrangement of isolators etc.?

S.
 23 July 2013 08:09 AM
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normcall

Posts: 8111
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Don't worry about that as most of the new developments round my way have a central panel in a corner controlling all the appliances.
Same room isolation?

-------------------------
Norman
 23 July 2013 10:17 AM
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redtoblackblewtopieces

Posts: 203
Joined: 10 January 2013

As long as neither appliance is more than 2m away from switch and circuit is over 15A but below 50A , ok to go, ( 4.4 Electricians guide to the Building Regulations)
Kevin

-------------------------
Safety through a Standard
Compliance by Approved Documents
 23 July 2013 10:59 AM
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geov

Posts: 174
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Subject to confirmation of loadings, Click do a neat "elephant's nose" outlet to accommodate (from memory), 2 x 6mm2.
 23 July 2013 01:19 PM
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AJJewsbury

Posts: 11270
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The induction hobs I've looked at seem to have an in-built power rationing system - they don't allow all the hobs to be on full power a the same time. Some are even configurable as to the maximum instantaneous power they'll draw - so that can be limited to 10A, 13A or 20A etc, to suit the available supply circuit.

- Andy.
 23 July 2013 09:03 PM
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alancapon

Posts: 5746
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Originally posted by: geov
. . . Click do a neat "elephant's nose" outlet to accommodate (from memory), 2 x 6mm2.

MK also do a cooker outlet plate, which will easily take a 6mm² in from the isolator and a couple of 6mm² cables out.

Regards,

Alan.
 23 July 2013 10:03 PM
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antric2

Posts: 1049
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Originally posted by: alancapon

Originally posted by: geov

. . . Click do a neat "elephant's nose" outlet to accommodate (from memory), 2 x 6mm2.


MK also do a cooker outlet plate, which will easily take a 6mm² in from the isolator and a couple of 6mm² cables out.



Regards,



Alan.


The click connector unit is a PRW217 and is very good.
The MK one is ok as long as you dont try and tighten the screws more than twice as very soft metal screws.

I may be wrong but I believe diversity cannot be applied to induction hobs due to the way they it manages its supply in temp control.

We, as standard, now supply 10mm as supply cable to click connector units with 2 x 6mm out as load cable
Regards
Antric
 23 July 2013 11:03 PM
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ebee

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Mmmm, that`s interesting Antric.
I can see where you`re comming from.
I`ll have to investigate that one, it ties in with Andy J Js comments.
Good point, Thanks.

Kinda causes a rethink of the old "tried and tested" scenario because of new tech.

-------------------------
Regards,
Ebee (M I S P N)

Knotted cables cause Lumpy Lektrik
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