phemens wrote:
Every wire gauge calculator I've tried recommended 4/0 cable for my setup, and my lengths are nowhere near 30ft. From the battery bank to the bus bars is 3ft, and from the bus bars to the 3000 W inverter is 5ft. At 300 amps for a couple of minutes (say running the microwave), those wires heat up fast. I'm not going to gamble an expensive set of batteries for a couple of bucks.
no harm in going bigger but for a money vs preformance issue (for some one that dosent have 4/0 laying around to use( I would have just used 0 gauge to the bussbar then at 5 feet 2 gage would be more than enough for the 5 feet. for some one buying the wire they will probaby save 70% with out sacarficing any preformance.
Steve
