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GrahamJAT

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  1. It is unlikely that the E7 equipment is faulty - if you have a teleswitch fitted, then the timings are not 'set in stone'. My E7 metering is controlled by a teleswitch, and the timings during the summer are supposedly 11:30pm - normal rate -> night rate 1:30am - night rate -> normal rate 3:30am - normal rate -> night rate 8:30am - night rate -> normal rate However, because I go to bed late, I frequently notice the first 2 switching times out by up to about 30 mins, and sometimes multiple switching occurs with some 5 or 10 minutes between events. My supplier tells me that this is normal! However, I believe that the total E7 time per night is arranged to always add up to 7 hours. The upshot is that I cannot rely on the switching timings and make about 30 minutes allowance in the timers I use around the house. Alternatively, if I am manually controlling something, then I check the meter first. Not all teleswitches are controlled to operate at the same time - there is a code on each one that signifies which encoding signal it operates with, and there are many. Each having slightly different switching times to spread the load on the electricity grid. I don't know if teleswitches in each geographic area have the same code, of if they are randomly distributed. Hope this helps.
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