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Two high-power appliances on a single 40A RCD
Former Community Member
I have an electric shower installed on a 40A RCD, in a room adjacent to my kitchen. The shower is only used in an emergency - i.e. when our gas boiler is unable to provide hot water to our main bathroom. I would like to take a spur from this 40A connection to use for a new double oven, which is rated at 32A. Can anyone advise on a safe and legal way to do this, ensuring that only one of the two appliances can be connected at any one time?
The calculation based on the requirements of BS7671
Rating on plate 4.0 kW
So 17.4 amps at 230 volts.
Therefore 10 amps plus 30% of 7.4 amps gives an assumed current demand of 12.3 amps
So is everyone satisfied with having a double pole B16 MCB in a metal enclosure connecting the oven to a 32 amp socket ring circuit, rather than increasing the potential load on the shower circuit by over 12 amps?
The calculation based on the requirements of BS7671
Rating on plate 4.0 kW
So 17.4 amps at 230 volts.
Therefore 10 amps plus 30% of 7.4 amps gives an assumed current demand of 12.3 amps
So is everyone satisfied with having a double pole B16 MCB in a metal enclosure connecting the oven to a 32 amp socket ring circuit, rather than increasing the potential load on the shower circuit by over 12 amps?
