Jon Ison
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| posted on 30/12/07 at 06:22 PM |
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Fan ovens ?
Our gas/fan oven is a bit poorly, its a double one and one as given up the ghost.
Am I correct in thinking modern electric fan ovens just plug in ?
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blakep82
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| posted on 30/12/07 at 06:30 PM |
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i think they're all still 30A supply...
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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joneh
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| posted on 30/12/07 at 06:34 PM |
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All need hard wiring, some crappy cheap single built in ones plug in.
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JoelP
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| posted on 30/12/07 at 06:41 PM |
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double ovens will draw more than 13A so need hard wiring normally but there are dubious ways round this. Single ones nearly all have a 13A plug on
them, just a few new/big ones are more.
There are ways to wire a double oven direct into you kitchen ring, but the reasoning is definately grey!
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JoelP
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| posted on 30/12/07 at 06:53 PM |
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i step onto a limb and say that NO domestic cooker needs a 10mm feed.
The bottom line is read the manual of the oven. One solution (and id welcome comment or argument from any other sparkies) is to put a 40A double pole
switch onto the kitchen ring, and a 6mm cable to this. Then you have the same switch, mcb and cable capacity as if it was on its own circuit. One
argument against it would be that the cooker should maybe have its own supply, though id be suprised if anyone could quote me a reg that specifically
forbids it. Another way would be to simply but a 2.5mm spur off a double socket, via a double pole isolator, to the oven. 2.5mm cable having a
capacity of around 20A, which is more than enough for the oven.
Then you can also apply diversity to reduce what you need supply to the cooker.
Plus the fact that if you have a spur shorter than 3m, you can drop the cable size without lowering the fuse rating to protect it provided demand
doesnt exceed capacity.
Now you'd be daft to apply all these arguments to one situation (esp the two about diversity and fusing), so id use a 6mm heat proof flex (even
if the connections inside the oven are 1.5mm flex...).
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wilkingj
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| posted on 30/12/07 at 07:34 PM |
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Under the 16th IEE Regs the MINIMUM is 6mm for cookers.
So anything of that size or Larger, and 10mm is the next size up.
Sorry, but you are on a limb... but only just 
I suspect the reasoning is that if you fit a cooker, it can be changed for a new one, and by the next house owner, hence your wiring must be up to the
spec.
1. The point of a journey is not to arrive.
2. Never take life seriously. Nobody gets out alive anyway.
Best Regards
Geoff
http://www.v8viento.co.uk
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billynomates
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| posted on 30/12/07 at 07:53 PM |
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I was advising somebody on this just before christmas, they'd bought an oven thinking it would justy plug in, but it was rated about 5.5kw, so
obviously needed it's own supply. With no time to arrange to get one installed I said if he protected it with a 13 amp fuse, and plugged it in,
then the worse that would happen would be the fuse blowing.
Truth is, the oven would probably run all day without blowing the fuse.
Having said that, I'd always to stay on both limbs, and run a 6amp cable to the oven. You never know when swmbo is gonna want a touch control
ceramic hob.
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billynomates
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| posted on 30/12/07 at 07:55 PM |
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quote:
Originally posted by billynomates
run a 6amp cable to the oven
That would be a 6mm cable. Ahemm.
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JoelP
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| posted on 30/12/07 at 07:57 PM |
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quote:
Originally posted by wilkingj
Under the 16th IEE Regs the MINIMUM is 6mm for cookers.
at the risk of being proved wrong, but with the hope of learning something, i would say....
ahem, reg number please?! 
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Jon Ison
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| posted on 30/12/07 at 08:11 PM |
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Ah, got the touch ceramic hob already, can I dive in there ? Just tracked that back to its own breaker, marked cooker as it happens ?
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JoelP
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| posted on 30/12/07 at 08:16 PM |
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easy solution then jon!
Assuming the ceramic hob is on a 6mm cable and a 32 or 40A breaker, put them both onto the same circuit. You can even use the same isolator for both
provided it is within 2m of both. You can get double appliance outlets if you are struggling getting all the wires in.
IEE regs allow 15kw of domestic cooking appliances onto a single 32A mcb. Thats after diversity.
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Jon Ison
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| posted on 30/12/07 at 08:23 PM |
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Sorted, cheers me dears, I'm perfectly capable of doing the required but will it all be kosher, isolator is well within 2m of both units, I
think the breaker is 30a but easy upgrade ?
Next question, supplier of said oven ? Any recommendations, just missed a neff on ebay, that said it didnt sell so I've slipped the guy an
offer.........
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billynomates
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| posted on 30/12/07 at 08:28 PM |
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quote:
Originally posted by JoelP
quote:
Originally posted by wilkingj
Under the 16th IEE Regs the MINIMUM is 6mm for cookers.
at the risk of being proved wrong, but with the hope of learning something, i would say....
ahem, reg number please?!
don't be so rotten as to be goading somebody into trawling through the regs on a sunday evening.
I'd rather pull my own teeth out.
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Jon Ison
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| posted on 30/12/07 at 08:46 PM |
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Just bagged
This, what would fan oven experts deam a good deal ?
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joneh
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| posted on 30/12/07 at 09:00 PM |
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Looks like a good deal - you may still be able to register it through Neff for the 2yr guarantee if the previous owners didn't bother.
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JoelP
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| posted on 30/12/07 at 09:08 PM |
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you noticed its a larder unit version yup?
Dont upgrade the breaker, it wont trip a 32A one, and certainly not a 30A rewireable, and its best that the cable is protected by the lowest possible
fuse rating.
Perfectly kosher, no different to putting a freestanding electric oven in.
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Jon Ison
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| posted on 30/12/07 at 09:12 PM |
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quote:
Originally posted by JoelP
you noticed its a larder unit version yup?
Its going in an old chimney breast.....
What was a good deal £££££ at £325 did the boy do OK ?
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JoelP
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| posted on 30/12/07 at 09:20 PM |
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sounds good to me, cant find that model in my usual place but they are between 600 and 1300.
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Jon Ison
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| posted on 5/1/08 at 05:54 PM |
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Fitted n working, brownie points all round.
cant here it running, seems so strange after last one, nice piece of kit.
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