Oven and cooker circuits

[Gareth Brookes]

I prefer to apply diversity to each separate appliances (in excess of 10A) individually, as opposed combining their total loads, then using formulae.

What do ya think?

Why would you do that then

 

[PAW]

Hi new on here and back on the tools after years of point at stuff for others (so go easy). I understand diversity, but with an induction hob it is quite easy to put all rings on and be drawing max load (think Sunday dinner of all the family). The same with the oven when heating up. For the sake of another cable (there is a spare way) and future proofing, why would you not run 2 x 6mm cable on 2 x 32A breakers?

 

[telectrix]

you can have all rings on together, but that will only be for a short period till the stats start switching .

 

[Andy78]

Hi new on here and back on the tools after years of point at stuff for others (so go easy). I understand diversity, but with an induction hob it is quite easy to put all rings on and be drawing max load (think Sunday dinner of all the family). The same with the oven when heating up. For the sake of another cable (there is a spare way) and future proofing, why would you not run 2 x 6mm cable on 2 x 32A breakers?

Depends on how they are made. I have installed induction hobs that are rated at a total load of over 6kW yet are supplied with 1.5mm flex and a 13A plug top.

 

[buzzlightyear]

Depends on how they are made. I have installed induction hobs that are rated at a total load of over 6kW yet are supplied with 1.5mm flex and a 13A plug top.

try bosh induction hob ,not 1.5mm cable but 4mm.

 

[Midwest]

I prefer to apply diversity to each separate appliances (in excess of 10A) individually, as opposed combining their total loads, then using formulae.

What do ya think?

Why would you do that then

My understanding of diversity, is that any one electrical cooking appliance, through thermostats etc and switching, would never be able to use its full load, e.g. a simple single electric oven, has a selector switch, to select either main oven or grill, not both together.

Using Table A2 in the OSG for household installations; it shows formulae for diversity & asking for f.l. of connected cooking appliances.

Manufacturers would supply the f.l. figure for their devices. Separate appliances may function differently (as described above).

Further into Table A2, calculating diversity for commercial premises, it makes allowances for more than one appliance, not withstanding the different scenario.

In a simple set up of separate hob & oven, the usage is not comparable, however as is the fashion these days to have more than one oven, combination ovens etc etc, it is not hard to see the usage these appliances could have. Therefore, in such an install, I would calculate diversity separately.

In most cases as Sparksburntout suggested, 6mm would muller most situations.

 

[Toneyz]

Depends on how they are made. I have installed induction hobs that are rated at a total load of over 6kW yet are supplied with 1.5mm flex and a 13A plug top.

Yes, my mate wired in 6.0mm for hob and when he got it only had 13A plug top couldn't believe it.

 

[MDJ]

Yes, my mate wired in 6.0mm for hob and when he got it only had 13A plug top couldn't believe it.

Ah your mate

 

[Toneyz]

Ah your mate

Yes, my mate who I work with who is the other 50% of Charltec Electrical Ltd not to be confused with (new) members imaginary mate that is going to wire that house etc.

 

[buzzlightyear]

MDJ, every time a keep looking at your avatar .Im thinking I sure that f**King dog is going to kill some one .one day!

 

[MDJ]

MDJ, every time a keep looking at your avatar .Im thinking I sure that f**King dog is going to kill some one .one day!

The dog is calm, the forum needs to watch out if I re-introduce shrek.

 

[elsparko]

MDJ, every time a keep looking at your avatar .Im thinking I sure that f**King dog is going to kill some one .one day!

that dogs smiling, im actually doubting its realness but huskies have that about them

 

[Pete999]

that dogs smiling, im actually doubting its realness but huskies have that about them

It's a Dog, leave it alone good Dog.

 

[Pete999]

on his profile ,he say he is ,but any good spark. would have work out that before asking .

Bit late but to be fair to the OP he doesnt say he is an Electrician in his profile.

 

[telectrix]

Bit late but to be fair to the OP he doesnt say he is an Electrician in his profile.

yeah but... mdj does not say he's a dog in his profile, but his avatar says he is.

 

[Pete999]

yeah but... mdj does not say he's a dog in his profile, but his avatar says he is.

True but my in avatar it looks as though I'm old and bent double which is all true.