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  1. #1
    Join Date
    Jan 2008
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    16

    Default Electricity testing?

    Hi Guys,

    Hope this question isn't too...um, dumb. But is there a product that you use to test how much power an appliance is using? For example, if I have my tv, vcr, dvd player and playstation (bf's) plugged in, but not turned on...can I do something to test it to see if it's sucking power? I thought I saw an ad for something like this, where you plug the device into the open outlet and it will read how much it's using.

    TIA

  2. #2
    Join Date
    Nov 2007
    Posts
    980

    Default Re: Electricity testing?

    http://www.smarthome.com/9034.html

    I don't know how many different kinds are out there but here is one

  3. #3
    Join Date
    Aug 2007
    Location
    Denver, CO
    Posts
    666

    Default Re: Electricity testing?

    Not a "dumb" question at all. I think it's a great question.

    I have heard some misconceptions off and on and here and there regarding power consumption of electrical items that are plugged in but not turned “on”. Since it sort of relates to this thread I thought I would post it.


    On “idle” (Not turned on but still has lights or a clock running.) a fax machine, TV, Coffee maker etc. might draw from 50mA to 400mA so let’s go in the middle and use 200mA for the example. Let’s also say that you’re paying .10 cents per kilowatt hour.

    24hours x 30days = 720hours

    .002 (200mA) x 720hours = 1.4 kilowatt hours.

    1.4 kilowatt hour x .10 = .14

    So, for your fax machine to idle all month costs you .14 cents.

  4. #4
    Join Date
    Jan 2008
    Posts
    16

    Default Re: Electricity testing?

    Thank you for the help guys, I actually found out that my local library lends these out for free! So I will use one to see how my appliances are doing...lol.

  5. #5
    Join Date
    Jun 2007
    Location
    Fayette County, Ohio
    Posts
    5,557

    Default Re: Electricity testing?

    Quote Originally Posted by kentvw View Post
    Not a "dumb" question at all. I think it's a great question.

    I have heard some misconceptions off and on and here and there regarding power consumption of electrical items that are plugged in but not turned “on”. Since it sort of relates to this thread I thought I would post it.


    On “idle” (Not turned on but still has lights or a clock running.) a fax machine, TV, Coffee maker etc. might draw from 50mA to 400mA so let’s go in the middle and use 200mA for the example. Let’s also say that you’re paying .10 cents per kilowatt hour.

    24hours x 30days = 720hours
    .002 (200mA) x 720hours = 1.4 kilowatt hours.
    .2 (200 ma) x 120 volts = 24 watt
    24 watt x 720hrs =17280 watt hrs or 17.28 kilowatt hours
    1.4 kilowatt hour x .10 = .14
    17.28 kh x .10 = $1.73
    So, for your fax machine to idle all month costs you .14 cents.
    Just a math error,
    Jack
    Be sure you live your life, because you are a long time dead.-Scottish Proverb

  6. #6
    Join Date
    Aug 2007
    Location
    Denver, CO
    Posts
    666

    Default Re: Electricity testing?



    Poke'm when they are down!

    I was in a hurry to go to lunch when I posted and had a funny feeling about that post............ By the time I get back from lunch to fix it there is a note from BP regarding my math error........... So............... I go to correct my dumb mistake and my compadres have pounced!

    My day in the bucket...............

  7. #7
    Join Date
    Aug 2007
    Posts
    612

    Default Re: Electricity testing?

    Quote Originally Posted by kentvw View Post


    Poke'm when they are down!
    Ok.....Glad to oblige.....
    Last edited by bp21901; 02-14-2009 at 08:56 PM.

  8. #8
    Join Date
    Jun 2007
    Location
    Fayette County, Ohio
    Posts
    5,557

    Default Re: Electricity testing?

    I know if I had done that it would have given you a great deal of pleasure to correct it.
    Jack
    Be sure you live your life, because you are a long time dead.-Scottish Proverb

  9. #9
    Join Date
    Aug 2007
    Location
    Denver, CO
    Posts
    666

    Default Re: Electricity testing?

    Quote Originally Posted by JLMCDANIEL View Post
    I know if I had done that it would have given you a great deal of pleasure to correct it.
    Jack

    Oh how right you are, my friend, how right you are.

  10. #10
    Join Date
    Jan 2008
    Posts
    16

    Default Re: Electricity testing?

    Well guys, I borrowed one from the local library. What I really want to find out is how much it's costing to have a space heater plugged in but not on. I hooked it up and left it for 12 hours, came back and the kwh reading said 0.01. So how is it that I calculate this? Sorry guys, never been good at math

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