DIYnot
Local | Network
   DIYnot > Forums
Local | Network
DIYnot Network Local DIYnot Network Local  
  Forum IndexForum Index     RulesRules    HelpHelp     Join FREERegister Free     About CookiesCookies     SearchSearch     LoginLogin 

2 single ovens from 10mm cable


 
Post new topic   Reply to topic    DIYnot.com Forum Index > Electrics UK
Search this topic :: View previous topic :: View next topic  
Author Message
cameraman555

from United Kingdom

Joined: 25 Aug 2009
Posts: 1
Location: London,
United Kingdom

PostPosted: Tue Aug 25, 2009 7:11 pm Reply with quote

Hi,
Previously installed 10mm T&E on 45 Amp MCB, in timber stud wall to future proof kitchen. Now I want to utilise the 10mm cable to feed a single pyrolytic oven & a combi microw/oven both rated at 3.4kW. Therefore 3400/240=14.2 Amps(installation manual states 16 amp rating) Can I split 10mm supply cable to each of the ovens?

Thanks
Back to top
 Alert Moderators

If you do not want to see this advert, click here to login or if you are new click here to join free.
Steve

from United Kingdom

Joined: 15 Apr 2005
Posts: 15931
Location: Yorkshire,
United Kingdom
Thanked: 220 times

PostPosted: Tue Aug 25, 2009 7:14 pm Reply with quote

Yes, you need a cooker switch controlling a 2-way enclosure containing two 16A MCBs. Feed your ovens from this.
Back to top
 Alert Moderators
LiamPope

from United Kingdom

Joined: 16 Jul 2008
Posts: 508
Location: Bedfordshire,
United Kingdom
Thanked: 20 times

PostPosted: Wed Aug 26, 2009 4:32 pm Reply with quote

Steve wrote:
Yes, you need a cooker switch controlling a 2-way enclosure containing two 16A MCBs. Feed your ovens from this.


Is this necessarily true? No - not a smug loaded question - I'm slightly confused icon_smile.gif.

When someone comes on here asking how to wire up, say, a seperate oven and electric hob to their existing cooker circuit, standard advice I've read many times on here is to use the CCU to feed one of those double cable outlets (or a dual backbox with two single cable outlets) and job's a goodun. No individual fusing below 45A (or whatever the breaker is) for each seperate appliance.

So is the above really necessary? Surely it comes down to whether the manufacturers instructions specifically require the supply to be fused down to a certain level, and obviously a lot of cookers/hobs dont require this?

Or am I missing something?

Liam
Back to top
 Alert Moderators
ColJack

from United Kingdom

Joined: 16 Feb 2007
Posts: 11773
Location: West Midlands,
United Kingdom
Thanked: 408 times

PostPosted: Wed Aug 26, 2009 5:45 pm Reply with quote

cameraman555 wrote:
installation manual states 16 amp rating
icon_wink.gif

and if you're refering to this


then that's usually suggested for a seperate oven and hob where either the oven is less than 13A, of the hob is gas and only needs and ignitor.. ( the 13A fuse in the plug dealing with the fusing down..
Back to top
 Alert Moderators
LiamPope

from United Kingdom

Joined: 16 Jul 2008
Posts: 508
Location: Bedfordshire,
United Kingdom
Thanked: 20 times

PostPosted: Thu Aug 27, 2009 11:55 am Reply with quote

Yeah but no but yeah but...

I noticed the 16A rating in the OP, but then the OP hasn't really been specific about that, which is kinda what I'm getting at. For all we know it could say: 'this appliance must be supplied by a circuit of at least 16A rating.'

If individual fusing is always required when two cooking appliances are run from a single CCU, then what's this for?


And similarly, in your example above where is the local fusing for the bit of kit on the cable outlet?

So presumably there exists cooking appliances that don't require individual fusing and can be run with other appliances on a single circuit with a CPD rating high enough for them both. Given the times I've seen the advice above given, these appliances are presumably common (most cookers??).

So getting back to my original reply, is it correct to say that the OP may well (or may most likely) only need


and not

+

+

?
Back to top
 Alert Moderators
Steve

from United Kingdom

Joined: 15 Apr 2005
Posts: 15931
Location: Yorkshire,
United Kingdom
Thanked: 220 times

PostPosted: Thu Aug 27, 2009 2:01 pm Reply with quote

Liam, I would consider it clumsy to just use a dual outlet. I consider that 16A appliances should be protected by an appropriately rated MCB.

And you dont even need a mainswitch in the enclosure - isolation is provided by the CCU, or the MCB at the main board.

icon_wink.gif
Back to top
 Alert Moderators
ColJack

from United Kingdom

Joined: 16 Feb 2007
Posts: 11773
Location: West Midlands,
United Kingdom
Thanked: 408 times

PostPosted: Thu Aug 27, 2009 5:45 pm Reply with quote

the fusing is there to protect the cable
if the oven / hob ignitor is already supplied with a flex, or if it has terminals too small for a suitably sized cable then you need to fuse down..

I'm guessing that the micromave wouldn't have a terminal box for adding your own flex to it..

the dual outlet is for adding 2 items that have a suitable size cable or with terminals that will take a suitable sized cable.. such as a double oven and electric hob..
Back to top
 Alert Moderators
Search this topic :: View previous topic :: View next topic  
Post new topic   Reply to topic    DIYnot.com Forum Index > Electrics UK All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
Similar Topics   Replies   Views   Posted 
2 ovens 10mm cable 2 440 Fri Oct 27, 2006 12:29 am
two ovens with 10mm cable 3 581 Fri Apr 01, 2005 10:39 am
Single ovens on 6mm cable 5 220 Fri Mar 23, 2012 7:15 pm
2 single Electric Ovens - what's required? 3 620 Mon Nov 27, 2006 7:04 pm
Replace Single Oven with Separate Hob+2 Ovens ... 3 920 Sat Dec 01, 2007 9:44 am


 
DIYnot
Find an Expert | Find a Supplier | Search DIYnot.com
Network | Advertising | Newsletter
DIY | DIY How To | @home | DIY Wiki | DIY Forum
By using this site you agree to our Terms of Service / Disclaimer.
Please read our Privacy Policy. Copyright © 2000-2014 DIYnot Limited.