Whoa, everybody...First off, thank all of you who have responded to the initial question of adding more battery's (a new bank). The system I've shown in these pictures was a TEST system with stuff I've had laying around here. I'm updating from the battery's to the inverter with 4/0 wiring, and have decided to add the other 3 12v battery's in parallel (no switches) with the original 3 (a bigger bank). The 2500w inverter I've been using was borrowed from a neighbor, and I want to get my own, and got a good price on the 5,000w inverter, so that's the reason for the bigger install. I'm only powering an icebox (5amps), an upright freezer (5amps), a 42" inch LCD TV (1.7amps), DirecTV (1.3amps), 4 CFL's (at the most) (52watts), and a ceiling fan (60watts) on backup power (about 14 amps, I think) . With the way the system is right now, I've run it for 4 1/2 hours and NOTHING has heated up in the wiring, inverter, batteries, etc (not that I could tell, anyway @95deg weather). Battery voltage at the end of the 4 1/2 hours did drop to 12.4v (close to the shutdown voltage for me) when I shut it down. I just want to expand the capacity of the back up a wee bit more cause I can get another 3 battery's for about $200. Can't pass that one up, eh? Again, thank you guys.......Bill