Clicky to Above PageLink to a Spec Page shows it as single phase 120VAC. Single is good, because you can use its full rated amps capacity as one load, specifically your RV shore tie cable. You'd need a adapter from Twist Lock (generator receptacle) to RV (shore tie plug). Just remember you have 23 Amps Max.
My guess, you could run a 13500 A/C plus your Converter/Charger, lights, radio, stuff like that. I think you'd have to "load shed" by turning A/C off to run the Microwave. You might be able to run Microwave and Toaster/Coffeemaker at once. Or Toaster + Coffeemaker with Converter/Charger.
Yamaha's a great brand. From what I've read here, the Honda generators handle Surge (like A/C startup) a little better than most other brands.
If God's Your Co-Pilot Move Over, jd
2003 Jayco Escapade 31A on 2002 Ford E450 V10 4R100 218" WB