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I need to know the power (wattage) rating or the current draw for a Sunbeam mattress pad and for a Sunbeam Comfortzone Electric blanket. Both are Kingsize. I would like to use the same circuit for something else and need to be able to estimate the various loads already on the circuit. I have 200 watts of lights and 250 watts of a stereo. Can I add 600 watts more on a 20 amp (2400 watt) circuit? The controllers do not have wattage rating marked on them and the blanket does not have wattage marked. I don't want to unmake the bed to see if the mattress pad also has no wattage marked on it.

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  • gil_woolley Feb 06, 2010

    I still need to know the wattage rating for the Sunbeam mattress pad and the Sunbeam Comfortzone Electric Blanket. I cannot find their wattage on the blankets, on the controllers nor on the literature.

    Sunbeam Mattress pad = X
    Sunbeam el. Blanket = Y
    Lights = 200 W
    Stereo = 250 W
    Furnace = 1200 W
    Added load = 600W
    My total wattage is: 2250 +X +Y

    And the circuit is rated at 120x20=2400 W

    I measure 120 V at all the outlets.

    I can rewire so that the blankets and stereo move to a different circuit but I still need to know X and Y.

  • gil_woolley Feb 06, 2010

    I need to know the wattage requirements for a Sunbeam mattress pad (heated) and a Sunbeam Comfortzone electric blanket. Both are used
    on a king size bed but the blanket may be only queen size. I am plugging some lights (200 W) and a stereo (250W and run a furnace (1200 W). I want to add 600 W more in floor heating tile mat but am approaching the 2400 W limit for this circuit.

    The controllers, mattress pad and blanket and even the manufacturer's literature do not mention wattage.

    If I know the wattage accurately, I can rewire outlets to different circuits to better balance the loads.

    Any help out there?

  • gil_woolley Feb 06, 2010

    Thanks, the wattage of 200 for a blanket and for a mattress pad is exactly what I needed to know.



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The average current draw for a Kingsize blanket is 200W on full setting

The same applies to the heat pad

From your list of appliances the existing circuit will take the load with ease .

I would however make sure that you have the correct fuses in the plug tops and that both heaters are plugged into their own sockets or via a very good quality two way adaptor plugged into a single socket

Posted on Feb 06, 2010

  • Tom
    Tom Feb 07, 2010

    When ratings are given for say a 20 amp circuit there is always a margin allowed to protect the end user

    A 20 amp circuit will take the whole load on a constant basis with the knowledge that there is at least a 25% safety zone.

    Not knowing the layout of your home I do not know what you are plugging in where

    However you could make some changes which will help the situation

    Replace the light bulbs with energy saving versions make sure that none of the plug tops get more than slightly warm when the appliance has been on for say 30 mins

    If possible check that the main fuse on the control box is not getting hot (Switch the power off first)

    A small amount of heat is acceptable because the circuit will be under load , hot fuses equal too much drawn current

    If you can see the wires going into the control panel do the finger test on the cables , they are insulated and it is safe (If there are cracks or breaks dont handle them).


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Yes you can..I assume you have :
-lights = 200w
-stereo = 250w
Additional needed = 600 w

Total you need = 200+250+600 = 1050w

Now your circuit is 20amps, 2400w max, right?

I assume you are in the US, then voltage = 110v
Thus power= amp * voltage.
Hence voltage = 2400/20= 120 volts...()

Now if your total usage on this does not exceed 2400w then you can use the devices you mentioned on this breaker and it should work fine.

Posted on Feb 06, 2010

  • heeman mohun Feb 06, 2010

    The best way to work this is to add a different breaker only for the 1200w oven,that is the rest is connected to a different breaker which will make more sense and allow future expansion of appliance rather than being restricted.Hope this helps.



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