2. Ag. Mechanics Becoming Familiar with Electricity Enterprise: Ag. Mechanics Job: Becoming Familiar with Electricity

3. Electrical Terminology 1. Volts - measure of electrical pressure 2. Amperes - measure of electrical volume 3. Watts - measure of electrical useage 4. Formula: Watts = Amps x Volts 5. Kilowatt Hour - unit by which electricity is sold

4. Electrical Terminology 6. Switch - device used to control the flow of electricity. S G

5. Electrical Terminology 7. Three-way Switch - used to control the flow of electricity from two different locations. S G

6. Electrical Terminology 8. Duplex Receptacle - electrical outlet or plug-in. D G

7. Electrical Terminology 9. Junction - electrical box where the source connects to the cable J SOURCE 10. Wire Nut - device used to connect two or more wires =

8. Electrical Terminology 10. Cable - two or more insulated conductors (wires) encased in an outer covering. a. sizes (big to small) - 2, 4, 6, 8, 10, 12, 14, or 16 gauge b. colors - black, white, bare/green, red

9. Electrical Terminology 11. Black Wire - common, power, hot solid line 12. White Wire - neutral dashed line 13. Ground Wire - safety (green or bare) dot dash line 14. Red Wire - power, hot waved line

10. Electrical Terminology 15. Examples of Cables: 12/2 a. 12/2 = 12 gauge wires, 1 black, 1 white, and 1 bare ground (3 wires total) 14/3 b. 14/3 = 14 gauge wires - 1 black, 1 white, 1 red, and 1 bare ground (4 total)

11. Electrical Terminology 16. Other a. a light fixture L 17. Locate the amps and volts on the following shop tools or machines, then calculate watts: a. Drill Pressd. Air Compressor b. 8” Bench Grinder e. Miter Saw c. Arc Welderf. Other?