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How to Install a Fuse Between an Inverter & Battery

A fuse is a sacrificial devise that prevents too much current from flowing between two components of a circuit. A fuse can protect against faulty wiring. For instance, errors in the wiring on the DC side of a circuit can cause too much current to flow from the battery bank to the AC inverter, causing a fire. "Blowing" the fuse--in other words, causing it to melt--prevents overflow to the AC inverter and reduces the risk of causing a fire.

12-gauge AWG cable
Fuse holder

Instructions

- 1
  Determine the amperage that you require your fuse to have. Divide the wattage of your AC inverter by 11 and round up to the next whole number.
- 2
  Mount the fuse holder between the battery bank and AC inverter, as far from potential sources of fire as possible.
- 3
  Connect the fuse to the inverter, using 12-gauge AWG cable. Connect the positive terminal of the battery bank to the fuse.
- 4
  Use 12-gauge AWG cable to connect the fuse to the positive terminal of the AC inverter. Reinforce all wiring with wire ties.
- 5
  Use electrical tape and wires to hold fuse wiring cable in place.

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