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Smart meters

Kelly Marie Angel

Hi about 3 weeks ago I was forced into having a smart meter they needed to replace the gas meter because it was in a dangerouse state fair enough I won't argue about that. But they also changed my electric meter now I've just measured the current in the phase tail to the meter and it works out as about 200mA more than the calculations  based on my wattage consumption ie watts divided by 240 should give amps now is the 200ma likely to be the meters consumption or just something with a less than unity PF? Also do smart meters measure kilowatthours like a proper meter or do they measure KVarh 

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    I've just measured the current in the phase tail to the meter and it works out as about 200mA more

    How does it compare with the same reading taken from the outgoing tail? That should tell you how much is down to the meter's self-consumption and how much is due to your installation.

    I would have thought that self consumption would have been a handfull of Watts at most.

    I'd agree that a poor PF is the likely cause of a high current reading - I've got an open enegy monitor that attempts to measure PF amoungst everything else and when my demand is low the PF is pretty awful. I guess it's down to all the small items having electronic PSUs these days. Switch on a large resitive load (e.g. kettle or oven) and it's back up to almost 1.0.

       - Andy.

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  • 0

    I've just measured the current in the phase tail to the meter and it works out as about 200mA more

    How does it compare with the same reading taken from the outgoing tail? That should tell you how much is down to the meter's self-consumption and how much is due to your installation.

    I would have thought that self consumption would have been a handfull of Watts at most.

    I'd agree that a poor PF is the likely cause of a high current reading - I've got an open enegy monitor that attempts to measure PF amoungst everything else and when my demand is low the PF is pretty awful. I guess it's down to all the small items having electronic PSUs these days. Switch on a large resitive load (e.g. kettle or oven) and it's back up to almost 1.0.

       - Andy.

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