Does leaving an extension cord plugged in use electricity?

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While extension cords themselves do not draw vampire power, if an electronic device is plugged into the cord, it may draw power even when it is off. Additionally, there are fire hazards associated with the prolonged use of extension cords, so it is better to use them only temporarily.

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No, an extension cord (short of long) does not draw (consume) any power so there is no way for the cord itself to increase your... Does leaving an extension cord plugged in use electricity? - Wikipedikia Encyclopedia ?

Warning. While extension cords themselves do not draw vampire power, if an electronic device is plugged into the cord, it may draw power even when it is off. Additionally, there are fire hazards associated with the prolonged use of extension cords, so it is better to use them only temporarily. Advertisement.

Truthfully, the answer is YES…an extension cord that is connected to a power source (ie. Plugged in), will definitely still pull/use a certain amount of electricity…. This is effect is commonly known as 'Line Bleed!’

But let’s take a look at what happens when you leave something plugged in and switched on. According to the Energy Saving Trust, any switched on charger that is plugged in will still use electricity, regardless of whether the device is attached or not.

Because this is hard-wired into the electrical system an extension cord may be plugged into it. This is the only time it is acceptable to plug an extension cord into a power strip. Extension cords are only for temporary use and are not to be left plugged into wall outlets when not being actively used. All this is further explained here.

Furthermore, does leaving an extension cord plugged in use electricity? No, an extension cord (short of long) does not draw (consume) any power so there is no way for the cord itself to increase your bill. An extension cord only conveys power to the devices plugged into it - if those devices are actually turned on.

Also to know is, does leaving an extension cord plugged in use electricity? No, an extension cord (short of long) does not draw (consume) any power so there is no way for the cord itself to increase your bill. An extension cord only conveys power to the devices plugged into it - if those devices are actually turned on.

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Longer answer, a short extension cord will make no difference to your electricity bill. If the load plugged into the extension was large enough to be at the rated current carrying capacity of the extension cord then it might get slightly warm to the touch.

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