I've scoured the forum and think I have most of my questions answered -- but am looking for specific inverter model recommendations -- or advice that my thinking is off base?
Our 2012 17B is going back to ETI soon to get retrofitted with the ETI solar setup (trailer was new to us a year ago, already had dual 6V, & has been back to ETI for LED retrofit already. Yes I know I could probably get solar setup for less $ doing it myself, but I'm not tech-literate enough to forego the comfort of having it done by the ETI pros who know both the trailer & the system!
ETI inverter retrofit, in addition to the solar, is not in our budget right now, probably never. Especially at the after-build / retrofit prices.
The vast majority of our camping is/will be boondocking, and our 120V needs are minimal -- but not non-existent. E.g. I use a CPAP (ResMed S8) for which the DC adapter is no longer available. Laptop, iPad, camera battery charger, etc. No TV or DVD, hair dryers or coffee pots or . . .
I'm currently using a Xantrex xPower 175 single-outlet inverter for the CPAP (which runs just fine on this). Incidentally, using only the CPAP, evening LED's, minimal furnace, getting 4 or 5 nights use when boondocking before the battery monitor goes below yellow.
This inverter will NOT run any of our laptops (inverter "whines" quite loudly when I plug the laptop or even my camera battery charger into it). Inverter is marked "non-sinusoidal", presumably meaning it is MSW?
I think I want an small(ish) inverter to plug into the 12v outlet, with two outlets instead of one, and a true sine wave to protect sensitive electronics. Not a built-in (among other things, the rear dinette is almost permanently left as a bed, and access to the systems under the dinette is not readily accessible). Power limit = ?? Maybe around 500 - 700?? The problem I've encountered is that no matter where I've looked, there seems to be no information on whether any given inverter I've found for sale is MSW (modified sine wave) or PSW (pure sine wave) -- and I get only blank stares from the "salesperson" when I ask. Yes, even from our RV and marine shops!
So, I'm looking for specific make/model recommendations, or advice that my thinking about what I think I need/want is OTL (out to lunch)!
Thanks heaps for helping out.