As mentioned earlier,my 1000 watt PSW inverter(Wagan) runs my Commercial Chef microwave just fine, as does my 1500 MSW Wagan..And the toaster oven/coffee maker/Instant etc..Less than an amp idle draw..(.9) I think..
A 1500 watt inverter should,depending on the brand,run most anything you use for camping with power in mind..I just bought a 2200 watt Giandel for RV and home use,the only reason I went that route is for home appliances in a power outage..Idle draw is up in the air because of conflicting internet opinions,but Giandel is usually very low..This is my third one..
Lance trailers installs a 1500 watt GoPower in there new units..Perfect size and brand but expensive compared..