3250watt oven

[brucelee]

Hi all
I know that ovens have to have own supply over 2kw
I have a question on a electric oven and gas hob with ignitor on 0.75 flex so i thought 16A breaker to a 20amp dp switch and double socket but after having a look at the job and oven i found wattage of oven was 3250watt so draws 14.13amp

I am now thinking 2.5mm t/e cable, 16amp breaker, 20amp dp switch and flex outlet the oven is not wired with a flex but manual says three core 1.5mm Hov5 V-F flex, also need a socket for the ignition of gas hob which i may now do off a sw/f/spur to low level socket is this ok any advice please chaps or suggestions of a better way

 

[mattmoo1974]

Hi all
I know that ovens have to have own supply over 2kw
I have a question on a electric oven and gas hob with ignitor on 0.75 flex so i thought 16A breaker to a 20amp dp switch and double socket but after having a look at the job and oven i found wattage of oven was 3250watt so draws 14.13amp

I am now thinking 2.5mm t/e cable, 16amp breaker, 20amp dp switch and flex outlet the oven is not wired with a flex but manual says three core 1.5mm Hov5 V-F flex, also need a socket for the ignition of gas hob which i may now do off a sw/f/spur to low level socket is this ok any advice please chaps or suggestions of a better way

Did you get me PM mate?

 

[pushrod]

Haven't got any tables in front of me but i would be tempted to go bigger again, so as to future proof it, so that at a later date the people can put an electric hob in or bigger oven. Much easier to do it now than later, bigger cable also reduces the chances of volt drop problems (depending on run length)

 

[brucelee]

Did you get me PM mate?

not looked mate will check

 

[brucelee]

Haven't got any tables in front of me but i would be tempted to go bigger again, so as to future proof it, so that at a later date the people can put an electric hob in or bigger oven. Much easier to do it now than later, bigger cable also reduces the chances of volt drop problems (depending on run length)

length of run only about 10metres or less
so how would you do this as they are only doing it to sell house so cost of renewing again someone elses problem
It has a free standing gas cooker at minute its the mother in laws house and trying to keep costs down
It does not have a cooker circuit at the minute and brother in law fitting new housing for single oven
i need a supply for 3250kw oven and the ignitor for the gas hob
would it be acceptable with 16amp breaker 2.5mm cable and a 20amp dp to a double socket or should i
go with a flex outlet with ignitor on a single socket from a fused spur

 

[pushrod]

If they are doing it just to sell the house and money is tight then not so much point in my future proof suggestion . Be aware though that a new circuit into a kitchen is notifiable so people may well want to see all the correct paper work when the sale goes through. Depending on installation method you might not even need a fused spur for the igniter as "clipped direct" for 2.5mm gives you 27 amps.

BTW no problem with VD on such a short run.

 

[brucelee]

cheers mate
yeah volt drop i checked so i am ok to just use double socket off 16a 2.5mm cable and 20amp dp switch and using method c clipped direct and there is a spare way on protected side of mains as its only got split load board with 1 30ma rcd 100amp
is the 1.5mm flex ok as manual states 1.5mm Ho5v v-f i am guessig but is this just heat resistant flex

 

[pushrod]

cheers mate
yeah volt drop i checked so i am ok to just use double socket off 16a 2.5mm cable and 20amp dp switch and using method c clipped direct and there is a spare way on protected side of mains as its only got split load board with 1 30ma rcd 100amp
is the 1.5mm flex ok as manual states 1.5mm Ho5v v-f i am guessig but is this just heat resistant flex

can't see any probs with what you are suggesting although i think i would put in just a single socket rather than a double for the igniter so people don't start plugging in tumble dryers at a later date (you could even use a 5A round pin plug and socket to ensure it stays dedicated to the igniter)
Also a 20A mcb would give a little more flexibility.

Does the oven come with a flex? Using heatproof flex can't do any harm but i would have thought that the oven would be designed with enough insulation so as not to need it - but check the manual for what it says.

 

[brucelee]

can't see any probs with what you are suggesting although i think i would put in just a single socket rather than a double for the igniter so people don't start plugging in tumble dryers at a later date (you could even use a 5A round pin plug and socket to ensure it stays dedicated to the igniter)
Also a 20A mcb would give a little more flexibility.

Does the oven come with a flex? Using heatproof flex can't do any harm but i would have thought that the oven would be designed with enough insulation so as not to need it - but check the manual for what it says.

no it doesnt come with a flex it just says use 1.5mm ho5v v-f flex whatever that is and also thought of using 20 amp breaker its a mem type db with a bs 4293 rcd 100a and type b ab16sb 16a breaker if i can still get one or ab20sb 20a type b
so should i use a flex outlet for oven and do the single socket of the ring for ignitor with fused spur as there are two flexes one for the oven and one for ignitor

 

[SEC-Tom]

Sellec Ltd

Your cable. I presume its just heat resistant.

 

[pushrod]

no it doesnt come with a flex it just says use 1.5mm ho5v v-f flex whatever that is and also thought of using 20 amp breaker its a mem type db with a bs 4293 rcd 100a and type b ab16sb 16a breaker if i can still get one or ab20sb 20a type b
so should i use a flex outlet for oven and do the single socket of the ring for ignitor with fused spur as there are two flexes one for the oven and one for ignitor

SEC-tom's link just says its ordinary flex as it is rated up to 70C .

If the ring is close you could put it on that or no reason why you can't spur it off the cooker radial - there is enough spare in the cable from what you have said - either way is fine as far as i can see.

 

[brucelee]

thanks mate
I have always just used heat resistant flex for this but thought it was a special flex as i had never heard of it
as they say you learn every day thanks mate and thanks to pushrod

 

[brucelee]

SEC-tom's link just says its ordinary flex as it is rated up to 70C .

If the ring is close you could put it on that or no reason why you can't spur it off the cooker radial - there is enough spare in the cable from what you have said - either way is fine as far as i can see.

so is it ok to run a 2.5mm from 20dp to flex outlet and then a 2.5mm of the same switch for single socket

 

[GStueyXR]

For the extra few quid it'd cost, why not just run a 6mm 40A circuit ?

 

[brucelee]

mother in law
this is all she wants as she is selling house
so as i have the 2.5mm and not charging the costs kept to a minimum if it was upto me i would run 6mm for cooker and a seperate circuit for oven but this is all she wants i need a supply for a 3250w oven and the ignitor for the gas hob whats best way mate is it ok to run 1x 2.5 mm to 20 dp switch and then two separate 2.5mm from that one for flex outlet to oven and 1 for single socket for ignitor as pushrod says if i put a double socet it may be overloaded by someone in future