What size cooker feed?

[Cirrus]

Was wiring a kitchen yesterday and the guy is having an electric range cooker installed and I needed to get a feed to it. The councils ask us to put in 6mm t&e as standard but will sometimes agree to 10mm. However, this cooker is rated at 14.1kW!!!! I calculated that at about 61A. Now surely I can't be expected to try and install 16mm t&e and worse still - terminate it in the cooker? I appreciate I have to factor in diversity but -
What is worse, his main cut out is only 60A and he also has a 10kW shower, 4 ring mains as well as the usual lighting circuits, water heater etc..
The council will not pay for 16mm so instructed me to pull in 10mm and leave it at that. Your thoughts chaps?

 

[rumrunner]

Good question ,how does it work out if you wire it in micc,maybee you can satify everyone that way
i dont do this type of work and didnt bother finishing the 16 edition course ,due to head blow off ,so please treat it as a sugestion rather tham a solution
atvbitwww

 

[Cirrus]

Nah, they wouldn't entertain pyro as it's domestic.

 

[Grae79]

what's the diversity calc for cookers? don't have osg to hand.

 

[Cirrus]

Nah, neither do I and yesterday it was a case of too many differing opinions. AGA reckon 10mm is fine and even 6mm would just about be ok too!

 

[Grae79]

was just looking at some ranges on t'interweb....similar sort of spec...they recommend connection through 45A conn/switch.

how long's the run?

 

[Cirrus]

Run is only 4 metres max

 

[Grae79]

not too bad really...i mean 10mm's rated at 63A using ref method 1. so with diversity in effect would've thunk would be ok, but don't quote me on that. better off doing sums and what-not, obviously.

 

[EasyFox]

what's the diversity calc for cookers? don't have osg to hand.

First 10amp of rated current then 30% of the remainder
Dont forget to add 5amp if sso on ccu.

25amp with diversity
30amp if socket on ccu

 

[Grae79]

did u pluck that off the top of ur head Easy?

 

[EasyFox]

did u pluck that off the top of ur head Easy?

What the diversity bit?

 

[Cirrus]

Eh?

 

[Bane]

did u pluck that off the top of ur head Easy?

No. He asked me.

 

[Cirrus]

 

[Bane]

He did. Ask him.