Basic Account Holder
Cagger since : Aug 2007
Posts : 4 (0.00 post per day)
Electricity meter clock and register errors
I have had two Horstmann S123 multi tariff electricity meters replaced this year due to faulty operation.
The most obvious problems were clock errors. The first meter was over two hours out and the second meter was over 1 hour out when compared to the GMT radio time signal. The meters should be aligned to GMT during the winter period. This means that a lot of off peak usage would be recorded as peak usage as one tends to program high energy usage for off peak times. The energy supplier has offered an adjustment, but I am not entirely happy about how this is calculated.
I also believe that the first meter was either subject to storm damage due to very local lightning strikes shortly after it was installed or had an inherently faulty register/memory. The register/memory, that records the number of units of electricity used, began reading much higher than usual after this storm event. A check meter was installed in February last year to monitor the erroneous meter. I made regular comparison readings during the time the check meter was installed and these showed the erroneous meter suffered from variable errors in the number of electricity units recorded over this period that were outside the allowed meter accuracy limits defined by OFCOM. Strangely the electricity supplier is denying this although they are admitting the clock errors exist.
The house has thermal insulation that exceeds current building regulations and although the heating uses an electric central heating boiler, it should be very economical to heat due to this high level of insulation. This is not reflected in the size of the bills being presented for the period the first meter was in use.
Has anyone had problems with their electricity meter accuracy, either clock errors, or wildly varying recorded consumption of electricity that bears no relation to actual use of electricity.
I have discussed the clock error issue with the electricity supplier and they have admitted that they have been having clock errors with meters but so far will not give any details about these errors and their frequency in writing. I wonder why? It may be that there are many meters showing problems with clock errors, which could be very embarrassing considering that the meters are supposedly certified as accurate. I believe that a large proportion of meters may be running incorrectly and it could be a good idea to check the time on your meter clock to ensure it is operating correctly. If you find that you have a clock error you will have been overcharged for some of your off peak usage.
Please report your findings on this thread.