I am currently using a 1000 watt Modified Sine inverter and it works everything on the camper that I think should be powered by 2 75 AH batteries.
I ruined (my fault) a 2500 watt modified sine wave inverter, and when I was using it it also powered everything BUT the microwave and Air Conditioner.
Not sure if it was the small battery bank (only 150 AH total) or modified sine on the microwave and NEVER even tried to crank the AC.
Both Modified sine inverters ran my desktop computer, TV, DVD player, phone chargers, laptop, iPad chargers etc with no issues.
The coffee maker was a bust since the 1500 watts killed my batteries before the coffee was done.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW