Window A/C with inverter and large alternator
I have a rat rod ambulance which is like a shorty bus but with a lot more insulation and no windows except little ones in the two back doors. On ebay I can get a 3000 watt inverter. A 7000 BTU window a/c unit uses around 3000 start up (compressor kicking on) watts and about 900 watts after the compressor is on. If I get a high output alternator, why can't I go down the road with this. Why do you guys say I need a generator? Any help will be appreciated. Thanks.