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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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  • 0
    Step up down transformers are worth doing for fixed loads. If the load is not there for much of the time, then the transformer losses get to you, and it may or may not be worth it. for small transformers 5% loss is typical, larger ones are better. Lightweight tool transformers are cut fine on the core performance and are quite a bit worse.


    I remember Stuart Little doing something like this for fans at the far end of a chicken farm, where the load was on 24/7 and the current was well defined so  the transformers could be well sized. I think all up the transformers were more or less paid for by the saving on cable costs.

    Disconnection times and ADS generally need some thought, you may end up breaking on the incoming 230V wich 'shunt trip' techniques but RCD style sensing on the 690 for earth faults.

    mike.
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  • 0
    Step up down transformers are worth doing for fixed loads. If the load is not there for much of the time, then the transformer losses get to you, and it may or may not be worth it. for small transformers 5% loss is typical, larger ones are better. Lightweight tool transformers are cut fine on the core performance and are quite a bit worse.


    I remember Stuart Little doing something like this for fans at the far end of a chicken farm, where the load was on 24/7 and the current was well defined so  the transformers could be well sized. I think all up the transformers were more or less paid for by the saving on cable costs.

    Disconnection times and ADS generally need some thought, you may end up breaking on the incoming 230V wich 'shunt trip' techniques but RCD style sensing on the 690 for earth faults.

    mike.
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