Knife switch with plug fuses for my fuse cutout. I did a test to see if a short in the line would trip the circuit breaker at the main panel and it didn't! I think there's enough resistance in the wires to keep it from tripping and when I shorted the wires they got real hot and started smoking! So I added this cutout with a 15 amp fuse that does blow during a short. The breaker at the panel is a 20 amp GFCI.