Don, PWM with 48V input is something to consider. That many 12V panels for a 2400KW array doesn't seem practical, I would rather use 24V panels. 10*24V panels in series/parallel, to make total 2400W/48V array and 60A PWM - maybe, yes.
Though I'm leaning towards MPPT, all panels in series. Don't like roof J-boxes and monstrous cables. Most trailers and 5-ers don't have room for more than 900W - you need to leave some room for walking and working there - so we are down to 20A controller with 48V battery. The difference btw quality 20A MPPT and PWM will be minor. I recall AM Solar J-box (for PWM) costs $60. So in the end it's a wash, in terms of cost. Efficiency of 48V PWM in series-parallel vs MPPT in series - don't know.
