I have to get cable for a triton t90si electric shower can anyone tell me what type of cable and size do i have to get and as its my second triton t90si electric shower, what also do i have to get to prevent them from being on at the same time. thanks
The person who will be doing the work will decide on the cable size, and will be able to get it at a lower price than you can.
As for the 2 showers issue, it's been discussed here before, and really the only answer is a changeover switch - where you put this, and how you prevent it being operated if one shower is in use are things you need to think about.
Various designs for non-preemptive systems have been put forward, all have been found wanting in some way or another, but I'm sure that if you found an electrician who can work with PLC systems he could devise something that would work. The one problem we could never get round was a race condition if both shower switches were turned on during a power cut.
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