any sparks on tonight need to know a bit about cooker/hob conections

[angellonewolf]

looking at specs of cooker we will buy 3kw is about what we need 4.6 kw would be the hightest i can fined

 

[angellonewolf]

the ring main will be one just for the kitchen runing 7 dubble sockets the rest of the house is on another ring main

 

[angellonewolf]

ahhhhhhh the hobs look like they take more power than i thought

 

[123hotchef]

all depending on hob! I had to run 2 x 40 amp supplys for my hob and ovens and warming drawer, then a separate ring for every thing else

 

[steve_s]

Get a electrician to do
wont be wrong then

 

[Kayos]

I removed a gas hob yesterday and the bloke fitted an electric hob, I think it was ceramic, it had a 2.5mm flex and the destructions said use a 32a mcb, he already had this installed and a 4mm t&e feeding the connection point (unsure if that's the right name)

 

[angellonewolf]

right more info

the cable installed is a 6mm to confirm this i have cheaked there are 7 cores of 1.08 strands

the amp capacty for the 6mm cable is 47 amps but volt drop will come in to it and apply diversity ?

the cable run is 13m long 2.5 meters in a wall and then run underneath the floor in the void to kitchen

this is the hob we are looking at

http://www.currys.co.uk/gbuk/househ...-electric-ceramic-hob-black-10143236-pdt.html

and the cooker is 4.6 kw

looking at the both together total power is 10.6 kw

applying diversity so total power 10600/240 is 44.16

so take 10 amp 34.16x.3= 10.25

so the first 10a+10.25+5a for the socket total 25.25amps total

so the 30amp should be enough?

 

[angellonewolf]

or to be fair

as its 2 units

the first unit is 4.6 kw 4600/230=20 take the first 10 then .3 of whats left 10+3= 13amp for the cooker

the hob 6kw 6000/230=26.08 take the first 10 then .3 of whats left 10+4.8amp 14.8amp hob

total 27.8 amps total if i add the 5 amp for the extra socket then yes will be over the 30 amp so will have to change the cooker socket for a switch only ? yes

 

[angellonewolf]

am i right in this please

 

[Paulbarrett]

Each appliance needs to be fused correctly.

 

[sparkysy]

That looks spot on from where I am sitting! Re the socket, is the protective device 32a if so then it will be fine. If it is a 30a fuse then it will still be ok, as I said before modern hobs and things usually won't all come on at the same time this allows smaller flexible connection to the outlet from the hob and a more regulated supply instead of all of them heating together!

 

[angellonewolf]

s*d it was strugling with what i need to do but when looking on line and both said they need 30 supply i thought better safe than sorry so when pulling in the cables for the ring for the kitchen yesterday went down and pulled another 6mm cable so now got 2 30 amp supplys mate will be coming over and termnate and test in a couple weeks i still got a fair bit of plastering to get on with and the sink to sort

 

[angellonewolf]

was just thinking about xmas when we will be using near every thing at the same time

 

[123hotchef]

you will not regret running another 30amp supply you can then change to a higher ratted appliance if you ever need to always better to over spec

 

[angellonewolf]

think looking at specs they would just run on what i had but did not feel that safe i know will not use 100 percent all the time but adding the extra 30 just means we now also get an extra socket on each side of the cooker so thats a added bonus better to do it now extra cost was £70 but it was the hassel of pulling the cable and will be running it up the wall i dont like cables runing in trunking so am having to put them in the wall and with the 6mm and 2 2.5 more to do but hayho

 

[sparkysy]

Nice I like the do it once and do it right approach it is the best way! Glad you got it sorted out!

 

[angellonewolf]

thanks all for any posts and help