just looked on EON web page they don't do an E10 tariff any more, its all E7
According to their website, "Usually you'll get 7 hours of off-peak electricity between 11pm and 8am. For example, 11pm - 6am or 1am - 8am."
Well, my system comes active mid to late afternoon, like a booster and then again in the early hours. It used to do this before the meter change and continues to do so now. Thus my assumption of E10. It also explains why they put an extra line in, as the heating has always worked during the day. Thus the single supply wasn't rated enough, as the heating would be on when we were in the shower, or otherwise using normal electricity, etc. When I tested the heating, it gained an afternoon boost and appeared to have placed that on the night meter even though it was during the afternoon. No wonder the meter fitter took all day to fit the meter and figure it out.
I'll also add I've always provided four meter readings since 1993 due to the way the heating worked, and thus, I recently presented the four numbers on this meter, as they matched my knowledge of what I'd been doing. EON should have easily corrected my understanding but decided to guess what I was doing and attribute the wrong reading to the wrong usage.
I've informed the Ombudsman of my findings which should hopefully help them with the case.
Anyway, thank guys, as I've learnt a lot and finally understand what's going on, and I have a sparky coming around to see about cleaning it all up and making it a bit safer. Just awaiting the Ombudsman and EON to catch up with this understanding. I thought NPower were bad, but EON has taken it to a whole new level