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Two high-power appliances on a single 40A RCD

Former Community Member
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?
Parents

  • A short pulse of high current has very little heating effect anywhere, and is basically the adiabatic formula at low current and very short period. You can test this yourself again by calculation.



    My MFT on 25A loop test seems to heat things enough to reliably blow a 3A BS 1362 fuse. (As I discovered, the hard way :( )


      - Andy.
Reply

  • A short pulse of high current has very little heating effect anywhere, and is basically the adiabatic formula at low current and very short period. You can test this yourself again by calculation.



    My MFT on 25A loop test seems to heat things enough to reliably blow a 3A BS 1362 fuse. (As I discovered, the hard way :( )


      - Andy.
Children
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