ependydad wrote:
Ok, I've revised the diagram with a couple of updates:
- I noticed my charger was bypassing the battery disconnect and worse was also bypassing the shunt so it wouldn't be counted.
- I tried to add clarity to the 15amp transfer switches
- I tried moving the charging points so they would more equally balance the batteries
Click for full-size
1. battery disconnect is in the preferred place, if you place it in the positive line the battery positive terminals are still hot and a wrench from a terminal to chassis will result in fireworks.
the automotive industry worked this out a long time ago which is why they tell you to disconnect the negative side first.
2. there should be a strap from the shunt to chassis at one point only, either at the shunt or the negative buss bar as drawn or at the campers distribution panel. one and one only.
3. power takeoff. as you are using lithium drop-ins, you will not have the issues lead acid suffer from in parallel. as drawn the positive take off should be on the bottom battery terminal and the negative should be on the top battery terminal.
4. fuse to the inverter is on the small size. inverters are at best 90% efficient so at full load you will have approx ( 1000 * 1.1 ) / 12 = 91.6 Amps.. your 80 A breaker will most likely trip.
5. there is no fuse in the converter positive line, hopefully there is one inside the converter itself.
