Remove the knockout panels that line up with the new breaker on the faceplate of your circuit box. Wrap the ends of the white and green wires around separate screws on the grounding bar in your circuit box and secure them in place by tightening the screws.
#220 volt wire size install#
Install a 30-amp double-pole breaker on the circuit, then push the ends of the red and black wires into the ports on the breaker. Attach a cable clamp to the hole and thread the wires through it. Wire sizes ( Brown and Sharp gage ) for single - phase, 220 - volt motors Distance in feet from meter panel to motorHorsepower of motors 20 30 40 50 60 70. Remove the front panel from the circuit box and punch out the pre-cut knockout on the side of the box. Strip the outer coating off of the last 1-2 feet (30-61 cm) of the end of the cable that will attach to the circuit box, then strip ½ inch (1.3 cm) of insulation off of the ends of each of the wires. The typical cable used for a dryer circuit is 10/3 Type NM cable which has three insulated wires and a bare ground wire, totaling four wires in all. The chart is based on the formula: V 2(R) x (L) x (I) 1000 Where 'V' is voltage drop, L is the length of the run in feet, 'R' is the resistance of the wire in ohms per thousand feet, and 'I' the amount of current drawn in amperes. Push the wires and outlet into the outlet box and secure them in place with screws, then screw on the outlet faceplate. Secure the black and red wires into the two unlabeled slots. Feed the end of the white wire into the slot with the neutral screw on the back of the outlet, and the green wire into the slot with the ground screw. Use a wire stripper to remove 1 foot (30 cm) of the coating on the outside of the cable to expose the wires inside, then strip ½ inch (1.3 cm) of the insulation off the end of each wire. Push the outlet box into the hole and screw it in securely, then pull about 1 foot (30 cm) of the cable out through the hole in the box. Use a fish tape to thread the cable through the wall between the hole you made for the outlet box and the hole you made near the circuit breaker. Run a rigid metal electrical conduit from the side of the breaker box to the hole you drilled and attach it to the wall with conduit straps every 1-2 feet (30-61 cm). Drill a hole in the wall near the circuit breaker box that’s about 1 inch (2.5 cm) wider than the diameter of the cable. Measure the shortest route between the outlet box and your circuit breaker, then cut a 10/4 cable so that it’s 2-3 feet (61-91 cm) longer than the distance you measured. Next, use a drywall saw to cut out a hole in the right size and shape for the outlet box you want to install. To wire a 220V outlet, first switch off power at the main circuit breaker.
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