Introduction: DC Mini Circuit Break Box
I bought Extremeaire Air compressor for my truck. It has a superb motor, solid cable and top quality. However, it has two problems. It does not have fuse box for safety and switch to turn it on and off. Once hooked to car battery, you will see an electric spark and motor is running. It is just too dangerous for me. Manufacturer advised me to use quick connector to switch it on and off. The quick connector is very hard to pull apart and hookup. It is simply not designed for switching. Also this unit does not have fuse box to protect circuits. If shorted, it will damage car battery right away. Anyway, i need a fuse box and switch for this superb air compressor.
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Step 1: Build Circuit Break Box
once figuring out the Amps of compressor, I put up a fuse box, composed of 2 circuit break to protect both wires. Remember, it should be a DC circuit break. Its internal wiring needs to be adapted to DC power, resulting in a little bit complexity. Wire has to be thick enough for enough electrical Amps. It needs to be calculated first.
Step 2: Build Connector
I built two quick connectors on each end of break box. It needs to be soldered, primed, shrink wrapped properly. We are talking about unto 120 amps of electric current here. So everything needs to be solid.
Step 3: Integrate Circuit Box Into Package
Next step is to put circuit/switch box into original box. Again, circuit box size needs to be calculated first. I secured box into big carrying box by 2 screws. Remember, if these 2 screws get loose and falls into circuit box, they should not short wiring inside.