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800M 32mm SWA - could this cause increased electricity bills due to voltage loss

Former Community Member
Former Community Member
Hi all,


Our electricity usage is very high (6,000 KWH annually) but we dont have any electricity heating or anything that should be chewing up that much electricity.


I'm looking for reasons why the usage is so high.


Our meter is actually sited on a neighbouring property and then a 35mm2 2 core SWA cable runs approx 800 meters to an Ashley Eddison transformer that regulates the voltage and amperage.


Could the length of the cable, the associated voltage drop and then the transformer usage contribute significantly to the electricity usage..?


Thanks and my apologies for any inaccuracies and ignorance!

Rolf
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    As has already been said, the long cable and voltage drop therein can be a source of appreciable loss. Not easy to determine since it depends on the pattern of use, not on the total consumption.

    The losses in the transformer are only partially known. Stated as being 2% but we dont know if this means 2% of the actual load in use, or 2% of the rating of the transformer. And allowing for rounding to the nearest whole percentage point, 2% could mean 2.49%.


    Another source of loss occurs to me. Could anyone have made a connection to your cable along the 800 meter route ? Are there any other buildings, or any outdoor lighting along the route ? Or has anything been connected on your side of the meter at the building where the supply originates.

    Either as a mistake, or due to deliberate dishonesty.

    Live jointing of such cables is not for the faint hearted, but can be done with proper training. DNO staff or sub-contractors do it all the time.
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  • 0
    As has already been said, the long cable and voltage drop therein can be a source of appreciable loss. Not easy to determine since it depends on the pattern of use, not on the total consumption.

    The losses in the transformer are only partially known. Stated as being 2% but we dont know if this means 2% of the actual load in use, or 2% of the rating of the transformer. And allowing for rounding to the nearest whole percentage point, 2% could mean 2.49%.


    Another source of loss occurs to me. Could anyone have made a connection to your cable along the 800 meter route ? Are there any other buildings, or any outdoor lighting along the route ? Or has anything been connected on your side of the meter at the building where the supply originates.

    Either as a mistake, or due to deliberate dishonesty.

    Live jointing of such cables is not for the faint hearted, but can be done with proper training. DNO staff or sub-contractors do it all the time.
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