Neff Induction Hob Power and Load question?

[Joe S]

I have a customer who is having a Kitchen fitted and has all the appliances picked out and ordered. The hob is an induction type hob and it says in the Kitchen Costing that it is a 20a Load required. When investigating the actual spec of the hob it states clearly that it is a 4.6kw Hob. I just wanted to double check as now allowance was made for a new circuit but judging by the spec a 4 or 6mm T&E is required.

Any help appreciated.

 

[Engineer54]

the actual spec of the hob it states clearly that it is a 4.6kw Hob.

That's an incredibly small KW load for an induction hob, is it only a 2 zone unit?? The unit i have is over 7 KW, and as far as i know isn't a particularly heavy load model....

 

[Joe S]

It has four rings with 9 different settings apprarently. I remember someone saying that induction hobs need a smaller supply but when I read the 4.6kw in the spec that just didn't feel right for a 2.5mm T&E??

 

[Engineer54]

It has four rings with 9 different settings apprarently. I remember someone saying that induction hobs need a smaller supply but when I read the 4.6kw in the spec that just didn't feel right for a 2.5mm T&E??

Most full sized zones on an induction hob are usually a min of 2 KW, (and often higher) generally there are 3 such zones with a single smaller rated zone. They are normally around 1.3 to 1.5 KW on a standard hob... Maybe you have a hob with all small induction zones??

Induction hobs generally take larger currents, but for far shorter time durations than a normal electric hob, halogen or otherwise and are of course almost as controllable as a Gas Hob...

Have you got a make and model No of this unit to check??

 

[Joe S]

Most full sized zones on an induction hob are usually a min of 2 KW, (and often higher) generally there are 3 such zones with a single smaller rated zone. They are normally around 1.3 to 1.5 KW on a standard hob... Maybe you have a hob with all small induction zones??

Induction hobs generally take larger currents, but for far shorter time durations than a normal electric hob, halogen or otherwise and are of course almost as controllable as a Gas Hob...

Have you got a make and model No of this unit to check??

Neff - T42E20X1EU

 

[telectrix]

just googled this model. it does say "electrical supply 4.6kW". wonder if they are factoring in diversity. that could make sense. i'd install 6mm on a 32A MCB.

 

[Engineer54]

Neff - T42E20X1EU

Can't get on to the Neff site for some reason, and i've been through 2 pages of goggle looking at every one!! lol!! Not one of them give individual zone ratings!! Grrr!!

Did get a laugh from one site though ''Appliance Reviews'' said this was a top rated (as far as KW rating goes)!! Then couldn't answer how this unit compared with other units with a higher KW rating, ...Seems he didn't quite understand the question then. ..lol!!!

I'll try and have another go tomorrow at getting through to the Neff site...

 

[Joe S]

Thanks guys. It confused me when the Kitchen Company are quoting for a 20a supply when the hob is 4.6kw. The customer wants me to do the work instead of their sparks and a good job too if thats what they're saying in their quotes!

 

[Engineer54]

Thanks guys. It confused me when the Kitchen Company are quoting for a 20a supply when the hob is 4.6kw. The customer wants me to do the work instead of their sparks and a good job too if thats what they're saying in their quotes!

Maybe because that's what the manufactures have recommended!!

Just been looking at other NEFF induction hobs, ...even a 2 zone job is rated at 3.6KW, and most of the other4 zone NEFF jobbies have a rating of 7.2 KW and above. Which is why i questioned the KW rating of this unit you have...

 

[Joe S]

I wondered aswell mate. Looks like a dedicated supply to me.

 

[Rauer]

I know the Siemens ones can be down rated with about 4 different power settings , but they cannot be altered back after! As neff Bosch and Siemens are all made in the same factory I wonder if this is the case?

 

[Joe S]

I know the Siemens ones can be down rated with about 4 different power settings , but they cannot be altered back after! As neff Bosch and Siemens are all made in the same factory I wonder if this is the case?

I didn't know this. Maybe thats why they were aiming for a 20a supply by down rating the appliance. Not a good move imo as the customer has chosen the appliance for a reason.

 

[Rauer]

Yeah but it's a typical kitchen designer promising the world!

 

[Joe S]

Tell me about it!

 

[Rauer]

So you don't want any plastering done and you want downlighters fitted oh and it's a flat roof you say oh I can assure you mr jones our electricians are brilliant it won't be a problem !!