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Since switching to three phase my consumption has rocketed to 25,000KWH per annum, despite no significant additional load.

adam spearing

We moved to three phase 3.5 years ago an anticipation of electric cars (which we don't have). 

Since then We have been consuming around 25,000KWH pa according to the meter. 

I've had a second meter fitted and it's validated these numbers. 

When I switch all the RCDs off it stops, so clearly it's my side of the RCDs. 

The house is around 10 years old with gas heating and gas cooking. We have low energy light bulbs. 

The overnight consumption seems to show we're using 4+KWH per hour when we're asleep. 

Load balancing was mentioned and I vaguely remember it from my degree but I don't believe that's it. 

Large donation to charity if you can help me work this one out

thanks in advance 

Adam

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  • 0

    4kW static load!! well that is your answer.   There are 365*24 hours in a year approx 9000 hours.

    The national grid is sized assuming most houses  average something like a quarter  of that in the day  !!!!

    (Usually ignoring occasional flights to 10kW for showers that last 15 mins, or the odd half hour of cooking so do not count)

    That static load needs to be a few hundred watts at most, not thousands, something big has been left on, or perhaps the neighbours have plugged in a cannabis farm into your garage and failed to mention it to you.

    I think the 3 phase part is a red herring, except that the time is co-incident, or something was switched on like a supply to a frost heater or a back-up immersion heater element that had previously been left off.

    You need to get the standing right load down and understand exactly what it is.

    Start flicking breakers and unplugging things to see where it is going, and report back.

    Mike.

Reply
  • 0

    4kW static load!! well that is your answer.   There are 365*24 hours in a year approx 9000 hours.

    The national grid is sized assuming most houses  average something like a quarter  of that in the day  !!!!

    (Usually ignoring occasional flights to 10kW for showers that last 15 mins, or the odd half hour of cooking so do not count)

    That static load needs to be a few hundred watts at most, not thousands, something big has been left on, or perhaps the neighbours have plugged in a cannabis farm into your garage and failed to mention it to you.

    I think the 3 phase part is a red herring, except that the time is co-incident, or something was switched on like a supply to a frost heater or a back-up immersion heater element that had previously been left off.

    You need to get the standing right load down and understand exactly what it is.

    Start flicking breakers and unplugging things to see where it is going, and report back.

    Mike.

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