I found this invertor that should do the job,
https://www.ebay.com.au/itm/31475343...YAAOSwPnVk~sSW , by plugging in a solar panel into the back. There are several models of this, some a little higher or lower..........just cant work out which model i really need. I understand solar panels come in 12v or 24v, but can not find any 48v...........do i get 48v by using 4X12vs or 2X24v's? And basically, i should say what i want this set up for..........I have and enclosed garage, no, windows, no noting but 3 walls of brick and 1 roller door.........and it gets stinking hot in there during summer. I have used this blower fan already, having it sit on a roof vent , suck from the garage into the roof space, and it cooled the garage by 10 degrees within 1 hour........of course, down the track i will have to run ducting so i can direct the heat to go outside my roof space.....and i only want to run these blower fans - when its hot......