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Can I plug my 1500 watt space heater into an extension cord?

seseid asked:


The manufacturer recommends direct plug in to wall socket but my space heater cord is just a few inches too short. Can I use a dedicated extension cord or power strip to overcome this problem? If so, which would be better?

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8 Responses to “Can I plug my 1500 watt space heater into an extension cord?”

  1. Clayton says:

    Yes you can. Just check cord for overheating after a few minutes.

  2. Derek says:

    I would never recommend putting a heater on an extension cord for a long period of time, you are asking for trouble. First extension cords have to be sized right. there are calculations of length and how many watts are going to be going through it, then on top of that you have an electrical connection laying on the floor on carpet or whatever, so its really not advisable. I know its not what you want to hear, but unfortunately thats the answere.

  3. William B says:

    move the space heater

  4. batman08332 says:

    the power strip would be your best cord to use or an appliance cord . don’t use one of them light duty cords for a heater their good for 100 or 200 watts but not 1500 watts long use . good luck

  5. power53 says:

    The manufacturer’s recommendation is the best. Too many times it is the extension cord that is under rated, overheats, and causes a fire. If at all possible, make arrangements to plug the heater in direct. If there is no other way but an extension cord or power strip, I would recommend a short, heavy duty appliance cord that is rated for 16 amps or more. For a safely margin, never use any cord or strip for more than 80% rated capacity. 16 amps x 80% = 12.8 amps (1,536 watts, which is just enough). The 1500 watt heater at 120 volts will require 12.5 amps. A 13 amp cord will overheat. If you have a power strip that is rated at 1875 watts or more, that will work as long as you never plug anything else into it. 1,875 watts x 80% = 1,500 watts. This leaves absolutely no room for even a cell phone charger. Even though it would work, expect early failure.
    Please be careful, and count the watts.

  6. renpen says:

    You could do it but it would take a heavy duty cord. They are sized by Gage. A 14 gauge is rated for just over 1500 watts. Never plug it into a regular household extension cord or a power strip, neither are rated for that. It would be best not to use one but if you absolutly have to at least use the right one.

  7. akt says:

    if it is a few inches move the heater. do not use extension cords or power strips.

  8. Ryan says:

    Yes, if you are careful about the size. Use a #14 or #12 heavy duty extension cord. Remember that the higher the number is the smaller the wire. Also I would not use anything longer than 25ft.

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