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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?
You can apply it to a final circuit with more than one load, if appropriate. The shower is the only thing on the circuit, so that is the final circuit current demand. So my banana....diversity is not a consideration. The design current Ib is the current demand of the only point of use. But before it is suggested that by adding another point of use, diversity could then be applied to this shower and the connected load and, by engineers magic, Ib remains the same, that can only be so in a controlled environment. A domestic house is not that, as, no disrespect to the OP, that environment can be subjected to misuse. So a changeover system is required
You can apply it to a final circuit with more than one load, if appropriate. The shower is the only thing on the circuit, so that is the final circuit current demand. So my banana....diversity is not a consideration. The design current Ib is the current demand of the only point of use. But before it is suggested that by adding another point of use, diversity could then be applied to this shower and the connected load and, by engineers magic, Ib remains the same, that can only be so in a controlled environment. A domestic house is not that, as, no disrespect to the OP, that environment can be subjected to misuse. So a changeover system is required
