Ground floor ring and kitchen ring joined


Postby Sparkydelux » Sat Dec 01, 2007 6:28 pm

Hi,

I am wiring up a large house and would like to know if it is ok to run the kitchen and ground floor sockets off one ring?

The main loads in the kitchen have there own feeds ie: induction stove (10mm cable) and conventional oven,steamer and microwave oven (6mm cable).

I know it is better practice to run a kitchen on its own circuit but honestly there are probably 4 work top plugs and 4 in the utility room which at most times wont be on all at once.
I was thinking it may be better to run them all off one circuit.

the ring will supply the garden room (4 sockets)the living room (4 sockets)
socket in the walkway and obviously the kitchen and utility room.I dont feel it will reach the 32A limit.

Furthermore,with regards to protecting it.RCBOs or Split boards?The board is going to be significanlty large as this house is a monster.

Any advice will be appreciated.

Regards,
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Postby sparx » Sat Dec 01, 2007 11:10 pm

Hi I think you have answered your own question by saying house is LARGE.
Regs say one ring per 100 sq metres or part thereof & load to be balanced over circuits as far as practicable. 10m X 10m is not a large area so need to measure area of each floor and add together, then divide by 100 to see how many rings required.
Have you considered 2 con.units one with 100mA 'S' type time delayed main RCD and other [as fitted by large housing groups] with split load each half having 30mA rcd's , cheaper (marginally) and gives DP. protection against single pole RCBO's
Good luck,
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