Forum Discussion

sd1209's avatar
sd1209
Explorer
Apr 23, 2017

Question on MSW vs PSW inverter

I have a Lance TC and am looking at installing a GoPower 600W modified sine wave inverter that I have had for about a year, never installed. I want to be able to power small items like phone charger and Direct TV box. Maybe small 120v lamp while boondocking. I understand the limitations of a small 600W inverter.

Do I need to get a PSW inverter for these things? I looked into powering an electric blanket and found most need a PSW but I was not certain about the phone charger and DTV box (HR44 model)....
  • PSW is much better. I'll never go back to MSW, too many things didn't work well with it.
  • Most of electronics on last generation will run on anything between 90 and 250V and the power supplies are very tolerant to power variations.
    So per my experience they will work, or in worse scenario something will not.
    Never hear about anything going in smoke becouse of dirty power..
    actually few years ago, in my house I lost couple of power supplies when a duck (!) flew into power line and created 400V spike.
    No worry about flying ducks in the camper.
  • sd1209 wrote:
    I have a Lance TC and am looking at installing a GoPower 600W modified sine wave inverter that I have had for about a year, never installed. I want to be able to power small items like phone charger and Direct TV box. Maybe small 120v lamp while boondocking. I understand the limitations of a small 600W inverter.

    Do I need to get a PSW inverter for these things? I looked into powering an electric blanket and found most need a PSW but I was not certain about the phone charger and DTV box (HR44 model)....

    Those things should work, but don't forget they will be less efficient than psw if you intend to leave them on a lot.
    There are a small number of (usually small) wall warts that can self destruct on msw I'm told, I've used dozens of them from cellphone to laptops with no issue other than they heat up a bit more (less efficient). As you have found with the electric blanket there are some types of switchjng controllers that hate MSW, I had a car battery charger that would just shut down in confusion on msw.
  • RoyB's avatar
    RoyB
    Explorer II
    I wouldn't trust anything electronic or things with fans or transformers with a MSW Power Inverter... The BLUE SMOKE will get you haha...

    In the older days the PSW Inverter cost alot more than the MSW type Inverters. You can get a good 600WATT PSW AIMS Inverter from Amazon now for $130 I think I saw on their page yesterday...

    I use the AIMS 600WATT PSW Power Inverter in my off-road POPUP trailer. What I did was run two multi-tap outlet strips extensions cords from the Inverter with one going to the home entertainment area and the other cord going to a table top near our sleeping bed... These extension cords have a ON-OFF switch on them... We can power up all of our small wattage items we use everyday with this setup and not ever worry about them going up in the infamous BLUE SMOKE...


    Google Image

    My AIMS Power (PWRI60012S) 600W Pure Sine Power Inverter is mounted as close to the battery main switch and still be inside my trailer... I actually leave it ON all the time when we are using the trailer...

    My small items usually only pulls around 250-300WATTS from the inverter usually between 6PM and 11PM each evening when camping off-grid... This is about 25AMPS being drawn from the 12V battery bank...



    It is sure neat for us having the PSW Inverter around when we are not on shore power or generator... We make it through the night just fine and by 8AM the next morning my battery bank is around 12.0VDC close to the 50% state of charge. Then I will run the 2KW Generator with the trailer shore power cable connected to it and re-charge my battery bank back up to its 90% charge state in around three hours og generator run time. We good to go agin the next day/night run off the batteries...

    Been doing this routine since 2009

    Works out good for us...

    Roy Ken