question

Some things to get you started:

• Use copper busbars (positive and negative). You will connect your batteries, inverter and charger to these busbars.
• Use fuses (not circuit breakers) on all positive wires connected to the above busbars.
• Wire sizes (cross section area) should be chosen based on the maximum current (A) each wire should carry.
• Fuse size is selected so that it protects the wire: the fuse blows at a current which that wire can still safely carry; but the fuse should not blow at normal current.
• You must have a battery disconnect (between the battery and the positive busbar). You can use a HRC fuse (in a fuse holder) to do both the job as a battery disconnect and also as a fuse for that wire.
• You must have a PV array disconnect from the solar charger (and always disconnect the PV array before disconnecting the battery).
• Use gPV fuses (in fuse holders) on the + and - wires from the PV array to the solar charger.
• Pre-charge the inverter capacitors before each time you connect it to the battery (or before each time you reconnect the battery to the busbar). You can use a power resistor or an incandescent light bulb for this.