domestic power meter question

Discussion in 'General Electronics Chat' started by gehan_s, Nov 13, 2012.

  1. gehan_s

    Thread Starter Member

    Sep 17, 2012
    38
    0
    hey all,

    in a domestic electricity meter do they measure active power or apparent power ????

    are they billing us for the apparent power or active power ???

    thank you !!!!!!!!!
     
  2. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,754
    760
    They are billing for what u use. They do not care about what kinda power u use.
     
  3. gehan_s

    Thread Starter Member

    Sep 17, 2012
    38
    0
    just to clarify, they bill us for apperent power right
     
  4. Audioguru

    New Member

    Dec 20, 2007
    9,411
    896
    At home you are not billed extra for a poor power factor. You are billed for true power (active power).
    Industry is billed extra for a poor power factor. They are billed for apparent power.

    The inductance of an appliance causes its true power (active power) to be less than its apparent power.
    The gadjet that is sold to save money at home on your electricity bill is just a useless very over-priced capacitor that does not change your electricity bill.
     
    alim likes this.
  5. GetDeviceInfo

    Senior Member

    Jun 7, 2009
    1,571
    230
    Check your bill and you'll find the rate is for KWh, not KVAh.
     
  6. Dodgydave

    Distinguished Member

    Jun 22, 2012
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  7. Audioguru

    New Member

    Dec 20, 2007
    9,411
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    The article forgot to say that it is talking about an industrial site that uses a lot more very powerful inductive motors and transformers than my entire neighbourhood!

    My utility doesn't bother measuring the slight increase in the current in the power lines when my refrigerator or washing machine is running. But when an industrial company has a poor power factor then it is expensive for the utility to increase the generators and power lines for them so they charge them more.
     
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