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joebedford's avatar
joebedford
Nomad II
Jun 07, 2014

MSW Interter: are the two sockets independent?

I have an el cheapo "300 Watt" MSW inverter. I want to run an ac wire to my main TV. Got to wondering if typically manufacturers just jumper the two sockets on the inverter together or are the parallel somehow? i.e. do I need to run TWO cables from the inverter to my soon to be installed socket at the TV to get the rated capacity (240W long term). Use one socket for TV and other socket to charge stuff.

I'm guessing they're jumpered together - one output / two sockets.
  • Hi,

    A typical plug is rated at around 15 amps, or about 1600 - 1800 watts, depending on the voltage. I have never seen a inverter with separate plugs - at least something that small wattage wise.

    The second plug is only there to make it easy to plug in two items or two extension cords, ect. You should not exceed the rated capacity, but can use the full rating from either plug, or split the load anyway you like between all of them.

    There are a lot of hardwired inverters, mainly rated more than 1,000 watts that would not follow these abilities. Some inverters in the 3,000+ watt range might have 120/240 output, with different rules and/or capacities.

    Fred.
  • Hi wa8,

    Sunforce makes a 1000 watt inverter with no breaker--but each outlet can only do 500 watts. A bit of a swindle, in my opinion.
  • wa8yxm's avatar
    wa8yxm
    Explorer III
    Inverters come, for this discussion, in 3 types

    IF there is no circuit breaker, both outlets are parallel. The Inverter's 300 watts (in this case) is divided between them.

    IF there is ONE circuit breaker.. See above

    IF there are two outlets and TWO circuit breakers,, THEN they are independent... But I have never seen one like this. Usually 2 breakers means it feeds remote outlets.
  • Thanks Don. I also got off my lazy a** and undid the four screws holding the end plate on. You're right - the two outlets are jumpered together - common output.

    Thanks.
  • Hi,

    With a few exceptions the outlets on inverters will do the rated output on either plug. Don't exceed the maximum wattage.