dspark,
thats pretty much where i'm going, thanks

Bill,
I was going to hook them into a stardard electrical box w/4 outlets. If you mean as far as the battery power, 12v 1500 CCA semi size battery with a 24hr reserve at 25amp draw. That battery would be directly fed off a 160amp alternator and also tied with 2 1000CCA batteries, for a total of about 3500 CCA and 48 hr reserve at 25amp draw. The inverters would only be used periodically during power down times on the jobsite or repeated overloads from wimpy 50amp breakers when there are 6+ trades on the job trying to pull from one temp pole.
Shawn