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Carb_Cleaner's avatar
Carb_Cleaner
Explorer
Aug 05, 2014

Inverter installed

I put a KISAE SW1210 Pure Sine Wave, 1000 watt inverter in our Wolf Creek 850 Truck camper.
It's mounted to a piece of 3/4 inch MDF that's over-layed with a piece of powder coated grey sheet metal (scrap from a standing-seam metal roof on a S&B). The instructions say to mount it to a non-flammable surface. I'm actually a little concerned by that requirement, but I guess it's a precaution. Two mounting bolts through-bolt the inverter, mounting board and the camper's plastic battery box. Two more screws go from inside the battery box into the back of the mounting board. I squirted a little hot glue behind the board before securing with the fasteners. The MDF's botton edge rests on the styrofoam support for the battery box.
The cables are #2 at 3' long with a 6" pigtail for the 100 Amp breaker The other ends poke through the back of the battery box (with grommets in the openings) and are secured to the two group 27 batteries. The chassis ground has a gold-plated lug with #8 and is barely visible in the last pic. Once I figured out where to mount the inverter, the rest fell in place pretty easy. The little square of plywood (the solar panel fuse is attached to it) in the pics was existing from the dealer and was mounted with screws/caulk, so I decide to work around it.
The only thing I've tried is a 25' drop light with a 60 watt bulb, which is plugged in for the pics. It worked. This is a cheap inverter, but I figured I'd take the gamble. We plan on running things like a 24" LED TV (it doesn't have a 12v wart), laptops, DVD/BlueRay player and/or a gaming console. A 110v LED droplight might be useful while setting up camp, too. It also has a 5 watt USB. I think our 900 watt microwave would be a bit much.
Inverter, cables and fancy-pants terminal covers from DonRowe.com.
Breaker from Solar-Electric.com
Questions, comments and criticisms/concerns are welcome.
View through the drawer holes:


Closer:


The 100 Amp breaker:

Connections and chassis ground:
  • Almot's avatar
    Almot
    Explorer III
    Carb Cleaner wrote:

    I had not heard of these{inverter MW}. A quick Google revealed a few different models. Very tempting.

    It would've been tempting if there were any numbers of energy efficiency comparing inverter MW to a regular one. For those who do a lot of cooking on MW in their homes, inverter model is probably a good choice because it cooks "smooth-er", without intermittent heating-cooling of old magnetron technology. But for RV - I don't even know what the fuss is about. For most RVers MW serves two duties - boiling water and reheating leftovers, and either one can be done perfectly well on propane stove.

    A proven way to reduce the energy draw of the MW, be it an inverter model or a regular, is getting a smaller one, 0.7 - 0.9 cu.ft, with LCD display (not LED), and with mechanical timer.

    SMK is right - the sweet spot is 300W inverter for low-power devices and 2,000W inverter for high-power ones. That is, if you have those "high-power devices". Mostly, it's MW, coffee maker, hair drier, some toasters. Yes, you can camp for a while without any of those.

    It's odd that your low-power A/C loads exceed 300W. Shouldn't happen, unless you run your DVD, gaming console, and laptopS (how many??) - all at the same time. I was unable to exceed the capability of 170W inverter, with just me in the trailer. There is no gaming console, of course.
  • The 300 watt unit won't drive my cordless drill charger. It's a Radio Shack, cigarette-lighter plug deal. A 400 watt inverter I've had for some time won't, either. Both the 300 and 400 are MSW.
    I probably won't have two laptops, a television and a gaming console going at the same time, but I might. If I did, my two group 27 batteries might not last too long. I picked up a Kill A Watt monitor, so I'll get a better picture of what's going on (plus, it's a cool toy).
    Kill A Watt Consumption Monitor
  • Carb Cleaner wrote:
    The 300 watt unit won't drive my cordless drill charger. It's a Radio Shack, cigarette-lighter plug deal. A 400 watt inverter I've had for some time won't, either. Both the 300 and 400 are MSW.
    I probably won't have two laptops, a television and a gaming console going at the same time, but I might. If I did, my two group 27 batteries might not last too long. I picked up a Kill A Watt monitor, so I'll get a better picture of what's going on (plus, it's a cool toy).
    Kill A Watt Consumption Monitor

    MSW warning re: some cordless power tool chargers
    It's possible your cordless drill charger isn't compatible with MSW as described on that link? I have never had an issue with my Dewalt cordless drill charger and my 300W PSW inverter.
  • For most RVers MW serves two duties - boiling water and reheating leftovers, and either one can be done perfectly well on propane stove.


    We do at least 90% of our cooking with the MW
    Of course in many thing I've never claimed to be like most people

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