The L1 terminals of both the switches are connected to line (or phase or live) of the AC Supply. You can observe in the schematic that both the COM terminals are connected together. If the power source is an electrical panel or fuse box, the cable should be cut at least long enough to reach the furthest termination point (breaker or fuse, ground and neutral bar) without the need of splicing. The following is the simple schematic of a three-wire 2-Way Switch wiring.3-way switching on 15 amp circuits, split receptacle circuits. called loom wire, Loomex or Romex (trade. Never introduce ground wire(s) to a terminal bar with only white or gray insulated wires connected or vice versa. give some general wiring information that.However, if all the existing ground wires connect to one bar and all the existing white wires connect to a different bar, maintaining separate ground and neutral connections is required. If equipped with a separate ground bar, rather than connecting to the neutral terminal bar, the ground wire can connect to the ground terminal bar.Finally, connect the black wire to the hot supply or the circuit breaker / fuse and the white to the neutral supply or neutral terminal bar in the electrical panel. The ground wire should be connected to the neutral terminal bar. If you are installing three way switches, you will need to run 14/3 wire because you need traveler wires to. Connect the ground wire to the circuit ground wire(s) with a wire nut or other approved connection (see How to Connect Electrical Wire). what size and type of wire to use in your DIY camper van electrical system. This red wire is used is many different ways. Leave 8–10 inches (20.3–25.4 cm) of wire inside both boxes (source and first switch) before cutting the cable to facilitate easy connection to the switch and power source. Install a 2 wire cable between the power source (outlet box, electric panel, etc) and the first switch box.
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