![]() ![]() It doesn’t matter which color goes to which side of the switch since as mentioned before, it acts as two independent switches. The double pole switch can now be added into the circuit with both colored wires (the black and the red) coming from the circuit breaker connected to the black terminal screws on the switch as seen in figures 7 and 8. The end of this wire is then connected to the ground wire from the other cable leading to the equipment, and an additional piece about four inches long that will later connect on the switch (Fig. Step 2 - Hook Up the Switch Step 2.1 - Connect the Neutral LineĪt this point, if the cable has a neutral line, both neutral wires are to be connected together with a wire nut connector after which the ground wire from the 220V line is looped around and fastened to the ground screw terminal of the electrical box as shown in Figure 6. The ends of the wires can then be also stripped of 1/2 inches of their insulation. The cable length connected to the appliance, with a section of the jacket removed, is then installed into the electrical box and clamped in place with the cable connector as in Figure 5. The cable can then be put in its resting position and the cable connector tightened to keep it solidly in position. Using a wire stripper or utility knife, remove 1/2 inch of the insulation from the end of the black, the red, and, if applicable, the white wire, as shown in figure 4. Insert the cable through the connector into the electrical box, as shown in Figure 3. Remove about six inches off the jacket from each end of the severed cable, and wrap black electrical tape on the piece of wire connected to the panel, at the junction were the jacket ends and the wires are exposed to indicate which line will be hot. Remove the appropriate knock-outs from the box and put the cable connectors in place. Step 1.3 - Prepare the ConnectionĬut the cable, making sure that there are at least six inches of cable that are available to be fed through the box. To accommodate for the extra length, leave the cable to the appliance to either be spliced inside an added junction box or be replaced. If the cable is too tight to permit at least six inches from each end to extend into the box, cut the feed from the breaker first. Before cutting the cable, place the electric box in a suitable location and fasten it in place. The 220V line going to the equipment will have to be severed in a spot near the equipment, but where there’s enough slack to wire up an electrical box. Confirm that the power is OFF by trying to turn on the equipment. The first thing to do before starting the installation is to shut off the circuit breaker dedicated to the piece of equipment being worked on, in the main electric panel. This installation illustrated here uses a three-wire cable but it is exactly the same wiring at the switch in two-wire cable installation for the colored wires, except that the neutral (white) wires are to be ignored. Part 1 - Install the Switch Box and Wires The following steps will illustrate how to do the installation. Either way, the double pole switch is the one to be used, since, in each instance, it cuts both of the colored (hot) line OFF and stops the current flow. If a multimeter was put across the two colored (hot) wires however, the reading would be 220 volts, giving this type of wiring an extra option. If the white wire was to be measured across to the red or the black, 110 volts would be measured in each instance. Such a hookup is needed if some of the controls in the appliance or equipment run on 110 volts while the main part generating the action such as the motor or heater, needs 220 volts. The second way is through a three-wire cable where one white neutral wire and two hot wires, one black and the other red, will be used. Each one of them is hot and carrying 220 volts (if tested across both wires). ![]()
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