Check the current amp capacity for replacing oven

[Geolykos]

Hi, I'm trying to order a new electric oven but I have trouble checking the amperage of the switch as the guy in the shop told me I need to do that first before replacing oven. My current oven has a rating of 2620kw which is lower than 13A but the problem is most ovens out there are 16A nowadays.

Is it possible to tell me if my current wiring will support a 3.5kw oven based on the pictures below? Having hard time finding a consistent electrician and I need to order and replace the oven as it's not working.

 

[ban-all-sheds]

16 x 230 = _____ ?

 

[EFLImpudence]

Hi, I'm trying to order a new electric oven but I have trouble checking the amperage of the switch as the guy in the shop told me I need to do that first before replacing oven.

The switch is likely 45A so that's alright.
However, the circuit breaker is 16A. We cannot tell why this is on the cooker circuit. Perhaps previous installer thought it should be fitted for the reason you state - many ovens are stated to be connected to 16A circuits, which they have in Europe.

My current oven has a rating of 2620kw which is lower than 13A but the problem is most ovens out there are 16A nowadays.

As above.

Is it possible to tell me if my current wiring will support a 3.5kw oven based on the pictures below?

Not really; we can't see any of it although it is extremely unlikely that it would not.

Having hard time finding a consistent electrician and I need to order and replace the oven as it's not working.

Just buy one that comes with a plug fitted and plug it in.



What are the inconsistent electricians telling you?

 

[Geolykos]

16 x 230 = _____ ?

Thanks for the quick response. That 3680 capacity is a total of all the devices connected to the cooker switch? That would include my gas hob and cooker hood then?

 

[Geolykos]

The switch is likely 45A so that's alright.
However, the circuit breaker is 16A. We cannot tell why this is on the cooker circuit. Perhaps previous installer thought it should be fitted for the reason you state - many ovens are stated to be connected to 16A circuits, which they have in Europe.


As above.


Not really; we can't see any of it although it is extremely unlikely that it would not.


Just buy one that comes with a plug fitted and plug it in.



What are the inconsistent electricians telling you?

Either not picking up, not replying or arranging a time and not showing up. So far..not so good

Thanks for your response. I might buy the one I like and try it after all. Hopefully there wont be any incidents.

 

[EFLImpudence]

Either not picking up, not replying or arranging a time and not showing up. So far..not so good

Oh, that's different. I thought you had had conflicting advice.

I might buy the one I like and try it after all. Hopefully there wont be any incidents.

That's not really the way to go.
It is extremely unlikely that it will not be suitable but it would be advisable to make sure first.

If you do not buy an oven that is supplied with a plug, you will have to do some rearranging of the outlets.



The hob will be negligible and the hood very little so they are not a problem.

 

[EFLImpudence]

Plus, you have a socket on the cooker switch.

A kettle plugged in there when the oven is on could trip the breaker. Not the end of the world but a nuisance and perhaps unnecessary.

I would advise that you find an electrician who will turn up and inspect the circuit - and, if possible, revert it to a more useful cooker circuit.

 

[Geolykos]

Plus, you have a socket on the cooker switch.

A kettle plugged in there when the oven is on could trip the breaker. Not the end of the world but a nuisance and perhaps unnecessary.

I would advise that you find an electrician who will turn up and inspect the circuit - and, if possible, revert it to a more useful cooker circuit.

Guess I'll have to keep searching for someone then. I believe these sockets were all replaced/converted including the switch board at 2009 based on some papers that came with the house but I will call someone just to be safe.

 

[Taylortwocities]

I believe these sockets were all replaced/converted including the switch board at 2009 based on some papers that came with the house

OK, so tell us what information is on the Installation certificate for the cooker circuit. What size cable is noted there?

 

[eveares]

My current oven has a rating of 2620kw

I think you mean 2.62Kw or 2620 Watts as 2620Kw is 11,391 Amps at 230V based on a power factor of 1.

If you swap your cooker socket combo isolator for a standalone isolator (Thus taking the 5A allowance for the socket out of the equation), then your 16 Amp over circuit may be able to support an oven up to 3,680W or 3.68Kw, providing that all and any cables are adequately sized and cable de-rating factors are taken into account.

 

[Geolykos]

OK, so tell us what information is on the Installation certificate for the cooker circuit. What size cable is noted there?

Attached is the only detailed information i have. I know it was the cooker sockets and circuit board switches changed because of the quote they gave them

 

[Geolykos]

I think you mean 2.62Kw or 2620 Watts as 2620Kw is 11,391 Amps at 230V based on a power factor of 1.

If you swap your cooker socket combo isolator for a standalone isolator (Thus taking the 5A allowance for the socket out of the equation), then your 16 Amp over circuit may be able to support an oven up to 3,680W or 3.68Kw, providing that all and any cables are adequately sized and cable de-rating factors are taken into account.

Is it worth it? Can you give me a ballpark figure for a job like that?

 

[EFLImpudence]

Is it worth it?

No, it makes no difference.
Don't use it if it causes the circuit breaker to trip.

Have the circuit inspected.
If the cable is the usual used for cooker circuits, then the MCB can be changed for a 32A one.

 

[Echo the husky]

WTF is up with that certificate?!! It makes no sense at all!! So many mistakes!

Edit: where is the rest of it?

 

[Geolykos]

WTF is up with that certificate?!! It makes no sense at all!!

And I thought it was just me haha

No, it makes no difference.
Don't use it if it causes the circuit breaker to trip.

Have the circuit inspected.
If the cable is the usual used for cooker circuits, then the MCB can be changed for a 32A one.

Looking for an electrician now. Just wanted to check whether the ovens have plug like you said but most websites don't even mention the amperage/wattage let alone anything about the plug. Actually not even Bosch themselves mention the wattage for their models.