UK Hardwiring an induction hob

[Jock from the north]

The cable is a direct 8 metre run under floorboards

So not a long run then .you have a socket on your cooker switch .Best bet is to get an electrician in to work out the diversity and if you can replace the cooker switch with a normal switch unless of course you need it /are using it and that would help with loading .diversity is just a factor that seems to work and has done for years but only for normal use .if your using socket for a kettle say and your cooking xmas dinner there's always a chance the 32 mcb will trip.best to get an electrician in to have a look .they may be able to run in a new cable for oven although your rcd side of board is full .they may be able to fit a different type of rcbo on other side

 

[Pretty Mouth]

He's done more than that the RCD is now in the wrong place, it should be on the left. I would be getting that looked at.

I think that's a sticker problem rather than an RCD problem. The RCD has the L terminal on the left, N right

 

[Santa]

if you're using the socket for a kettle say and your cooking xmas dinner there's always a chance the 32 mcb will trip.

We have never used the socket so that shouldn't be a problem.

 

[Santa]

Thank you all for your advice and information. It looks as if I can go ahead and order the hob.

 

[mainline]

I would like to see a pic of the internals really

 

[SnowWhite]

Please help...Had an AEG Double Oven Built-under, go wrong. AEG sent replacement oven & when engineers went to swap over, they stopped. I'm now left with an unconnected oven. They are saying Currys installation team shouldn't have connected induction hob & oven on same circuit , & for safety they would not do it. They said I need a new hob that can be wired into 13amp wall socket. Currys say the two can be wired together & do not want to take responsibility. I'm left with a ruined Easter!

 

[HappyHippyDad]

It may be ok to have both hob and oven on the same circuit, as you can see from the thread you've joined. However, if the engineers won't do it then you'll have to get an electrician out.
Why don't you give your approx location and someone on the site might be near by and happy to come out today... double time I expect though. Unlikely, but worth a shot.

 

[littlespark]

Where in Uk? Maybe a forum member can help you out.
IP address suggests near Norwich? Is that right?


It all really depends on the load of both the oven and hob together, compared with the supply circuit size.
There is an equation, called diversity, that means the load is much less than the maximum of both added together.

Even if it is slightly more, the worst that would happen is the circuit breaker would trip.

Was it AEGs own engineer?


I’ve just connected a new 5 ring AEG to an existing circuit with a double oven. No problems at all.



With a username like Snow White…. I guess you’re feeling a little Grumpy just now??


Sorry

 

[Santa]

The electrician who came to connect the hob put a JB behind the oven and wired both units together. He did not alter the circuit breaker or touch the wall switch.

I did query the JB and he (rather shirtily) told me it was perfectly acceptable. I have been using both units, sometimes both at the same time, for a couple of weeks now with no apparent problems.

 

[littlespark]

Hmm.. are we talking a proper cooker connection plate, which is rated to the maximum load, or a simple joint box, which may not be.

 

[SnowWhite]

Thanks to all ,who have bothered to reply, I have attached two pieces of report to hopefully clarify the situation we're in!

 

[SnowWhite]

Where in Uk? Maybe a forum member can help you out.
IP address suggests near Norwich? Is that right?


It all really depends on the load of both the oven and hob together, compared with the supply circuit size.
There is an equation, called diversity, that means the load is much less than the maximum of both added together.

Even if it is slightly more, the worst that would happen is the circuit breaker would trip.

Was it AEGs own engineer?


I’ve just connected a new 5 ring AEG to an existing circuit with a double oven. No problems at all.



With a username like Snow White…. I guess you’re feeling a little Grumpy just now??


Sorry

I think at this rate I'm needing Doc, for my blood pressure! I have written a reply with screenshot.

 

[SnowWhite]

Hmm.. are we talking a proper cooker connection plate, which is rated to the maximum load, or a simple joint box, which may not be.

 

[littlespark]

They certainly have NOT applied diversity, whatever their little report says.

Taking the diversity equation from earlier in this thread, (message #5)

For each appliance, work out total amps....

Hob
7300/230 = 32A
Take 10 off, and add 30% of remainder.... 30% of (32 - 10) = 6.6
Add the 10 back on... 16.6A

Oven
5300/230 = 23A
30% of (23-10) 3.9
Add the 10.... 13.9A

Total load with diversity is 16.6 + 13.9 = 30.5A


That was just a quick count up, and my collegues may have a different method.... but whatever.... theres nothing wrong with doubling up the hob and oven on a 32A 6mm supply
As long as the circuit is RCD protected, theres no reason not to connect.

How you convince them, however, i dont know

 

[SnowWhite]

Hope this helps!