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JRRNeiklot's avatar
JRRNeiklot
Explorer
Nov 09, 2015

Plugging shore power into inverter

I'm about to buy an inverter for my travel trailer. It has no 12 volt outlets, so I think ac is the easiest way to go. Can I plug the shore power plug (with an adapter) directly into the inverter and power the outlets in the trailer? I'd be running a tv, computer, microwave, fan, and maybe charge a cell phone or other device. No hair dryers, curling irons, or toasters involved. I'd need to flip the breaker on the converter first, but otherwise, will this present a problem?

Also, I want to install a couple solar panels later, will this complicate things any?


Thanks.

70 Replies

  • Some reviews say this 1000 watt inverter has only 500 watts to each outlet for 1000w total. No mention in the manual so maybe it has changed. Verify with Sunforce before you buy.
  • JRRNeiklot wrote:
    Wow. I had no idea, the fridge and wh were so power hungry. I run them on propane most of the time anyway. The microwave is 900 watts, so I should be okay there. I'm looking at this inverter: Link Think it will suffice?

    Thanks.


    That is a good price for the inverter. it will run most of your list except the microwave. A 900w MW will want about 1350w input.

    Often, people will have two inverters. a 2000w for microwave and other big draw items and a smaller one for the little stuff.

    Since that PSW 1000 is less than many 300w you should grab that and use it as your little one.
  • At 900 watts, the microwave will draw 7.5 amps if used for 6 minutes(by my math). That's probably more than I will use it in a day. But yeah, it will require a larger inverter.
  • DrewE's avatar
    DrewE
    Explorer III
    Fridge and water heater use a good bit of power, and you nearly always have a lot more propane energy available than battery power. One pound of propane has energy equivalent to about 500 AH from a 12V battery bank. This means that a single battery is equivalent to maybe a couple ounces of propane.

    Note that your microwave uses about as much power as a hair dryer or toaster—it's a power hungry appliance. Your inverter size requirement goes way up when you include the microwave vs. the other things you listed—300W or so would likely be adequate for the other things, maybe a bit more if it's a power hungry computer.
  • Wow. I had no idea, the fridge and wh were so power hungry. I run them on propane most of the time anyway. The microwave is 900 watts, so I should be okay there. I'm looking at this inverter: Link Think it will suffice?

    Thanks.
  • Some inverters do not like having the 120v and 12v grounds shared so best read the installation instructions before you spend money. They will say specifically do not run an RV or similar.

    The inverter linked below should be fine with an RV.
    Sunforce 11240 manual Read fully before you click and buy.

    Water heater 1400 watts
    Microwave 1700 watts
    Fridge 350 watts

    900 watt 'cooking power' will be 1200 to 1400 watts input power. If it says 900w on the power label on the back as max draw you should be fine with the 1000 watt inverter.

    Solar is just an independent battery charger. No effect on other items except they will have a charged battery to draw from.
  • Why set the fridge and water heater to propane? Do they draw too many amps?

    Thanks.
  • Hi,

    Yes, but you need to disconnect the converter, set the fridge and water heater to propane.

    Solar will compliment inverter use nicely.