Yes a friend is trying to get as much low cost energy as possible, he has a water tank with top and bottom elements which runs of Economy7 through a Horstmann E7BX timer so he can boost the top element during the day, this element is supplied by a 6mm double insulated cable from the supply isolator (via 16A CB) marked water heating only. He also has solar panels generating up to 6.1Kw, what he wants is for the bottom element on the emersion heater to make use of the free energy from the solar panels and run it during the day . My Idea would be to fit a change over switch ,bring two supplies into it one from the off peak DB and one from the daytime supply ,with the outgoing from the changeover switch going to the timer (TIMED) and bottom element, so this would mean he makes use of the solar power during the day and the off peak at night. What are your thoughts, has anyone else had this problem?
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