You can no longer post new replies to this discussion. If you have a question you can start a new discussion
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?
But normal service in this case is that cooker and shower won't be used together. It's no different than saying that in normal service, one won't put a large pan of cold water on every hob ring and simultaneously turn them and both ovens on. In either case, if the combined overload lasts too long then the cable won't reach an excessive temperature before the OCPD trips. After which, the unskilled householder in their uncontrolled house will deduce that you can't use all those things at the same time and avoid doing so again.
But normal service in this case is that cooker and shower won't be used together. It's no different than saying that in normal service, one won't put a large pan of cold water on every hob ring and simultaneously turn them and both ovens on. In either case, if the combined overload lasts too long then the cable won't reach an excessive temperature before the OCPD trips. After which, the unskilled householder in their uncontrolled house will deduce that you can't use all those things at the same time and avoid doing so again.
