Replacement Single Oven - 13A or 16A

[scousespark]

As a matter of interest, are you saying that because you do not believe in the application of diversity for cooking appliances at all (i.e. you believe that a 32A 'cooker circuit' should not be used to supply cooking appliances which represent a total maximum load of more than 7.36 kW), or is it because you feel, specifically, that diversity should not be applied to a single oven?

Kind Regards, John

I never said I don't believe in the application of diversity. I said that an SO is limited to a maximum load of 13A (2990W).

 

[ban-all-sheds]

But if you apply diversity to the oven, how much does it draw?

 

[JohnW2]

Maybe cus it going to draw 15A when the oven is on and the fuse will get hot in the fuse holder?

What are your views about 50A+ flowing (briefly) through a 32A MCB?

Kind Regards, John

 

[JohnW2]

I never said I don't believe in the application of diversity. I said that an SO is limited to a maximum load of 13A (2990W).

Yes,. but if you do believe in the application of diversity to an oven, then the maximum after-diversity load presented by a "3600 kW" oven is about 11.7A (~2690kW) - which is obviously less than 13A/2990kW.

Kind Regards, John

 

[AndyPRK]

I'm fine with a large current going thru and MCB for a few seconds.

In self cleaning mode max is "4.80 kWh" 20A

I don't see how you can apply diversity to a single oven. It's either on or off.
Well in this case it appear to be between 15 - 20A. Either way its a good few amps ABOVE 13

 

[ban-all-sheds]

In self cleaning mode max is "4.80 kWh" 20A

20A for an hour.

A 13A fuse might survive, but that's way out of the operating windows of plugs and sockets.

 

[JohnW2]

20A for an hour. ... A 13A fuse might survive, but that's way out of the operating windows of plugs and sockets.

I agree - but where did this "20A (4.8 kW) for an hour" come from? - it's the first I've heard of it, and it isn't really compatible with the manufacturers saying that the oven requires a 16A supply. If that sort of thing is typical, it sounds as if we should be wondering whether it was appropriate to apply diversity to self-cleaning ovens.

 

[AndyPRK]

I guess someone must have read the link in the first post.

 

[JohnW2]

I'm fine with a large current going thru and MCB for a few seconds.

If everything were turned on simultaneously (from cold) on a large cooker on a 32A circuit, then 50-60A could easily flow for a lot more than a few seconds (before everything 'got up to temperature'), but traditional diversity calculation would say that it was OK.

In self cleaning mode max is "4.80 kWh" 20A .... I don't see how you can apply diversity to a single oven. It's either on or off.

As I've just written, I'm rather surprised/shocked by this "4.8kW for an hour". However, more generally, the fact that something is either 'on' or 'off' (in contrast to this 'self-cleaning mode', which appears to be 'continuously on') does not, in itself, preclude application of the concept of diversity ('over time').

Kind Regards, John

 

[EFLImpudence]

No it's 4.8kWh to clean itself. That's not 20A.

 

[JohnW2]

I guess someone must have read the link in the first post.

Ah - I didn't see it initially, I've just found it - under "Additional Information - Consumption Values".

However, it is NOT 4.8 kW but, in fact, 4.8 kWh. How much current that corresponds to will therefore depend upon the duration of the "e cons pyrol self-clean" cycle. Under "Connection" it says that the "Electric Connection Rating" is 3600W.

Kind Regards, John
Edit: too slow again!

 

[JohnW2]

Right ....

If the cleaning cycle takes 1.25 - 2 hours, and consumes 2.5 - 4.7 kWh, that implies a power consumption of 2 - 2.35 kW (i.e. 8.7A - 10.2A) - well within the capabilities of a 13A fuse (and 13A plug/socket).

Kind Regards, John

 

[ban-all-sheds]

I agree - but where did this "20A (4.8 kW) for an hour" come from? - it's the first I've heard of it, and it isn't really compatible with the manufacturers saying that the oven requires a 16A supply. If that sort of thing is typical, it sounds as if we should be wondering whether it was appropriate to apply diversity to self-cleaning ovens.

I guess someone must have read the link in the first post.

I've just read it, and I have found where it says that the energy consumption is 4.8kWh, but not where it says that it draws 20A. Where did you find that?

 

[JohnW2]

I've just read it, and I have found where it says that the energy consumption is 4.8kWh, but not where it says that it draws 20A. Where did you find that?

See what I've just posted. It would appear that the truth is something in the range 8.7 - 10.2 A, well within the range of a 13A fuse/plug/socket. I therefore withdraw my comment that we might need to reconsider whether it is appropriate to apply diversity to self-cleaning ovens!

 

[AndyPRK]

Ah whoops. Missed the h

It’s still 15A though.