Fuse Holder and TWO15A Class R Fuses for Solar charge, DC pump, refrigerator, lights.
Every wire from battery positive must be fused for safety. Select a fuse rated 125% to 150% over normal amps expected, and no higher than amp capability of smallest wire in circuit. These fuse holders have clamps for wire sizes up to 2 gauge.
A fuse and holder is basic protection against electrical fires from over-current in wiring. Fuses and holders by themselves are not accepted by National Fire Code unless mounted in an approved metal box.