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The average strand of Christmas lights pulls about 1 amp, which is roughly the same as a 100 watt light bulb running on 120 volts. It's hard to say how much running it will cost you for electricity, but one thing is sure: no one wants to leave their light on all day, same goes with the Christmas lights.
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoVery few. The UL/CSA label should tell you. If it doesn't have a label, don't use it.
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Each LED bulb on a Christmas light string is .04 watts. Count up the amount of lamps on the string and multiply it by.04 and you will have the total wattage of the string. For example if you have 100 lamps on the string, the total wattage is 100 x .04 = 4 watts.
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Wiki User
∙ 11y agoSome Christmas lights use LEDs and they might use about 3 Watts. With incandescent bulbs (the ones that get a little warm) use perhaps 20 Watts.
That is 0.003 or 0.02 units of electricity each hour.
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