I wish to install 2 new ovens (built in Siemens) and an Induction Hob (Siemens) and use the present cooker circuit to power them.
Is my application of the diversity formula correct and if so can I wire them all in to the present circuit?
oven 1 3.5kw
oven 2 3.6kw
hob 7.1kw
total 14.3kw
I = 14300/230 =62.2a
1st 10amp + 30% of remainder
use the 1st 10amps of 62.2a leaving 52.2amp.
30% of the remaining 52.2amp = 15.66a
1st 10amps + 15.66amps = 25.66amps.
Circuit is 32amps.
So this should be ok. Yes No ?
The cooker circuit is not RCD protected but straight to the consumer unit which has 8 circuits, 4 on an RCD.
It can be switched to the RCD part of the unit as there is a spare.
Is my application of the diversity formula correct and if so can I wire them all in to the present circuit?
oven 1 3.5kw
oven 2 3.6kw
hob 7.1kw
total 14.3kw
I = 14300/230 =62.2a
1st 10amp + 30% of remainder
use the 1st 10amps of 62.2a leaving 52.2amp.
30% of the remaining 52.2amp = 15.66a
1st 10amps + 15.66amps = 25.66amps.
Circuit is 32amps.
So this should be ok. Yes No ?
The cooker circuit is not RCD protected but straight to the consumer unit which has 8 circuits, 4 on an RCD.
It can be switched to the RCD part of the unit as there is a spare.