oven connection

[6040howard]

Hi, am wiring in a new oven rated at 3.78kw and have a dedicated fuse on the house switch board with 40 amp cabling. believe I should fit a 20 amp DP isolator neon switch and then junction box to the oven lead. Problem is all the cooker switches I've seen are rated at 40 amp. suggestions?

 

[Taylortwocities]

The rating of the switch is the maximum current that the switch contacts can carry so a 40 or even 50amp switch is perfectly OK.

I would use a 40amp cooker switch so the switch is OK if the cooker is changed at some later date.

PS it does not need a neon indicator if you do not want one.

 

[6040howard]

Thanks for your info,managed to find a 20 amp isolater switch so have fitted it and all is well. H

 

[Taylortwocities]

Bear in mind that the fuse/mcb in the consumer unit is much more than 20amp, so an overload will fry your switch.

Getting those thick 6mm² conductors into the switch terminals will be a challenge too.

 

[PrenticeBoyofDerry]

Thanks for your info,managed to find a 20 amp isolater switch so have fitted it and all is well. H

You would have been better off taking the advice of Taylortwocities and fitting a higher rated control switch, the standard ones are 45A this will have kept you well covered for overload or upgrade.
Also I would recommend an "outlet plate" for the second connection rather than a junction box.