power supply to oven and hob

[gpz900jim]

I need to put a power supply to an electric oven and an electric hob in a domestic kitchen (separate items, hob is located above the oven). I have done the calculations, and decided to run the supply in 10mm t and e. My questions are 1, can both appliances be wired through a single 45a wall switch in the kitchen given that they are separate appliances? and 2 what method should be used to tee off the single 10mm cable to the 2 appliances ? Thanks

 

[BLBelfast]

Tee the two appliances from your cooker outlet plate. What size of load is on the oven and bob for you to resort to 10mm or is it a long run?

 

[telectrix]

and have you allowed for diversity when calculating cable size?

 

[gpz900jim]

yes its a very long run to the kitchen from the cu. it wasnt the size of the cable that worried me, it was the fact that these 2 appliances are separate items, and i thought that all fixed appliances needed an exclusive means of isolation. and also, im a bit iffy about teeing off a cable of this size, I want to get it right.

 

[SimpleSimon]

yes its a very long run to the kitchen from the cu. it wasnt the size of the cable that worried me, it was the fact that these 2 appliances are separate items, and i thought that all fixed appliances needed an exclusive means of isolation. and also, im a bit iffy about teeing off a cable of this size, I want to get it right.

You are right in saying that fixed appliance lead a local means of isolation but 10mm for 2 separate appliance? Can you not run it in a ring?

 

[Des 56]

You are prmitted to isolate both appliances off the same local isolator as long as they are within close proximity ( i cant recall the distance without checking)
The both items can be wired to the cooker control on seperate supply cable,then downsizing of a fuse or individual isolation at the outlets

 

[malcolmsanford]

If you are going to work to the on site guide then you can feed two cooker units from one switch providing that the switch is not 2 meters from either appliance, but it does advise you to note regulation 536.2 where you need to install as per the manufacters instruction, so if that says a seperate circuit for an appliance then that is what you need to do.

If you 10mm^ cable is going into the main CCU then as long as you keep the connection cable from the switch to the oven and hob below 3 metres and installed against damage by fault conditions and fire (Regulation 434.2.1) then you can reduce the size of the cables CSA to fit the load of the units.

 

[gpz900jim]

You are right in saying that fixed appliance lead a local means of isolation but 10mm for 2 separate appliance? Can you not run it in a ring?

Thanks for the info, just wondering what was meant by running it in a ring, are you saying that a ring can be used in a situation like this, instead of a conventional radial circuit?

 

[daniel hill]

we do something simular in rotherham we go from the 45A isolator it a cooker outlet to a single socket both on a gate box
thats if it is a single oven
have done this for years

 

[gpz900jim]

Gate box? is that what is also known as a double accessory box??