Electricity Wiring Diagrams

Objectives Determine the type of wire needed for circuits with on a handout with 80% accuracy. List the rules for wiring a single pole and three way switch with 100% accuracy. Demonstrate how to wire a variety of circuits on a handout with 90% accuracy. Explain the role of the National Electric Code on a handout with 80% accuracy.

Reasons to Learn Why do we need to know how to diagram an electrical circuit? Why are there various types of circuits in a house?

Questions to Answer What are some different types of circuits in a house? What do we need to know before we can diagram a circuit? What is an advantage of diagraming a circuit? What are some rules for diagraming a circuit? How do you choose the correct wire?

National Electric Code List of standards for the safe wiring of electricity. Can be adopted by state or local governments. Important because it holds people accountable for their work. Keeps people safe.

Wire Size

KEY Cable Hot wire Neutral wire Ground wire Re-identified Solder less Wire Connector

Service Entrance Panel 240V Circuit 120V Circuit

Duplex Receptacles Source

Wiring Rules From the source neutral (white) to silver screw From the light, hot wire (black) from brass to single pole switch From source connect hot wire to remaining screw to switch

Single Pole Switch

Switch Loop

3 or 4 way Circuit Rules From the source, Neutral to silver screw on light From the light, black to black wire from the Brass (Common) screw on the three way switch. From the source, connect hot wire to 2nd common screw of the switch Travelers to travelers

Three Way Switch

Switch Loop 3 Way

Service Entrance Panel 240V Circuit 120V Circuit

Duplex Receptacles Source

Single Pole Switch

Switch Loop 3 Way

Three Way Switch

Switch Loop 3 Way