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Thread: Christmas Light Current Draw

  1. #1
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    Default Christmas Light Current Draw

    I've created a very basic spreadsheet calculating current draw of different brands and types of lights. This list shows all of the lights I have access to (My own). If anyone cares to add to this list please do so. If there are more entries I will arrange the list with a better layout.

    Todd
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    Last edited by tjetzer; 01-31-2009 at 02:03 PM. Reason: My terrible spelling

  2. #2
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    Default Re: Christmas Light Current Draw

    You may want to save the Excel version down a version to the .xls file type to make it more accessible.

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    Default Re: Christmas Light Current Draw

    Quote Originally Posted by Virtus View Post
    You may want to save the Excel version down a version to the .xls file type to make it more accessible.
    Good point, I didn't pay attention to the format. Stupid excel '07. I will change it soon


    Todd

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    Default Re: Christmas Light Current Draw

    OK, here is a more compatible format. Some of the lights (Target 150's in particular) were very surprising. Testing the current draw of the lights can pay off!
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    Default Re: Christmas Light Current Draw

    Very interesting. I would not have assumed such a difference between what I thought were otherwise similar strings. Thanks for the down convert, too.

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    Default Re: Christmas Light Current Draw

    Nice list, are these calculated from a meter?

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    Default Re: Christmas Light Current Draw

    Here are a few more:

    Lowe's Holiday Living, 100 ct. incandescent mini-lights = .33 A
    Walmart Holiday Time, 25 ct. LED C9 = .01 A at half-wave, or .02 A at full-wave (with a bridge)

    I also have some Walmart Holiday Time 100 ct. incandescent mini-lights, that I measured at .33 A, which is just slightly different than your measurement. I may be measuring differently - I am measuring the AC voltage drop across a 1 ohm resistor in series to get the current.

    Also, in another post, someone said that Target Energy Saving 100 ct mini-lights are .10 A. EDIT: should be .2 A.

    don
    Last edited by djulien; 02-01-2009 at 01:44 AM. Reason: changed ".1A" to ".2A"
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    Default Re: Christmas Light Current Draw

    Quote Originally Posted by tdx View Post
    Nice list, are these calculated from a meter?

    All numbers came from a Kill-A-Watt meter.

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    Default Re: Christmas Light Current Draw

    Quote Originally Posted by djulien View Post
    Here are a few more:

    Lowe's Holiday Living, 100 ct. incandescent mini-lights = .33 A
    Walmart Holiday Time, 25 ct. LED C9 = .01 A at half-wave, or .02 A at full-wave (with a bridge)

    I also have some Walmart Holiday Time 100 ct. incandescent mini-lights, that I measured at .33 A, which is just slightly different than your measurement. I may be measuring differently - I am measuring the AC voltage drop across a 1 ohm resistor in series to get the current.

    Also, in another post, someone said that Target Energy Saving 100 ct mini-lights are .10 A.

    don
    I did plug in a couple of the Walmart lights to see if the amperage went up the same amount for each strand plugged in. When I had 1 strand the meter read .31 Amps, 2 strands read .62 and 3 strands it went up an additional .01 to a total of .94. The Kill-A-Watt only reads to hundreths, so the actual current draw could be .31X per strand. It is also possible your testing procedure could be more accurate.

    As far as the energy saving Target lights go, .10 A seems a bit low considering the 150 light energy saving swag lights draw .27 amps. Then again I'm a rookie, and could be wrong....

    Todd

  10. #10
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    Default Re: Christmas Light Current Draw

    Quote Originally Posted by tjetzer View Post
    As far as the energy saving Target lights go, .10 A seems a bit low considering the 150 light energy saving swag lights draw .27 amps.
    Sorry, should be .2 A. I gave a 50 ct. number.

    don
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