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Just to chip in that I have now connected up a 3.3 kva site transformer to my 3kw immersion heater. I have tried to show the crude wiring in my avatar. I did not want to change much in case I did not like the result. Anyway, it works! The draw is metered at around 870w and this falls seemingly...

Millom. Not the best weather to be up on a roof! ---------- Post Auto-Merged at 12:48 ---------- Previous post was made at 12:41 ---------- Dave, Your system is far more swish than what I am putting in for the moment. However, it won't be without refinements. The transformet has 2 outlets and...

Dave, Many thanks for clearing that up - off to eBay now! My "control" system will be much less swish than yours. I have a 3.8kW array but in Cumbria, there are a lot of days when it just won't be enough to power even a downrated immersion heater together with the basic household usage. So, I...

A very interesting thread as I am planning something similar. Top of the list, I was thinking about acquiring a site transformer to drop the voltage on my immersion heater to 110v. The advantage being that if it doesn't work well then I can just put it back on eBay. Does anyone have any views...