UNIT ELECTRICAL SWITCHES AND RECEPTACLES W C BUSTER

UNIT: ELECTRICAL SWITCHES AND RECEPTACLES W. C. “BUSTER” HOUNSHELL SPRING 2002 Virginia Tech

OBJECTIVES: • Performance Objective: Students will be able to identify and list the different types of wall switches and receptacles commonly use in electrical wiring for the home or farm stead

Enabling objectives: • Given the instruction in class, laboratory, and assignments– Students will be able to list and identify the different types of wall switches, receptacles and their parts commonly used in wiring electrical circuits with a 70% accuracy:

Switches to list and identify: • • • Single pole Three-way switch Four-way switch Double switches Pilot light switch Switch/receptacles • Timer switches • Automatic switches • Motion- sensor switches • Programmable switches • Time-delay switch • Dimmer switch

Receptacles to list and identify: • Normal receptacles • High –voltage 15 amps, 125 volts (grounded) 20 amps, 125 volts 15 amps, 250 volts 30 amps 125/250 volts 50 amps, 125/250 volts

Interest approach: • The uses of electricity are numerous and new developments are appearing nearly daily. • Electricity provides our homes, farms, businesses and industries with valuable resources that would otherwise be unavailable to us. • Science, medicine, transportation and even communications have been fortunate to make rapid technological advancements related to our understanding of electricity.

Interest approach: (Continued) • All phases of modern agriculture depend on the benefits of electricity • To better understand benefit from the application of electricity – There are basic principles that one should become comfortable with.

Technical Content Power. Point Presentations • • Electrical Switches Special Purpose switches Electrical Receptacles GFCI Receptacles

Evaluation: Receptacles and Switches

Identify the following switch • 1. A. three way B. single pole C. four way

Identify the following • 2. A. three way B. single pole C. four way

Identify the following • 3. A. three way B. single pole C. four way

Label the following: • 4. A. _____grounding terminal B. _____switch lever C. _____screw terminals • 1 • 3 • 2

Label the following: • 5. A. _____traveler screw terminal • 1 B. _____common screw terminal • 2

Label the following: • 6. The correct name for No. 1 and No. 2 are: A. Common terminals B. Travel terminals • 1 • 2

Label the following: • 7. A. _____mounting straps B. _____amperage and voltage rating C. _____wire gauge rating D. _____wire compatibility rating 2 1 3 4

Identify the following • 8. A. Switch/receptacle B. High voltage receptacle C. Duplex receptacle D. Pilot receptacle

Identify the following • 9. A. Switch/receptacle B. High voltage receptacle C. Duplex receptacle D. Pilot receptacle

Identify the following • 10. A. 15 amp/125 volt B. 15 amp/125 volt with ground C. 15 amp/250 volt D. 20 amp/125 volt w/ground

Identify the following • 11. Color, neutral, hot, ground. b A. _______, _______ B. _______, _______ a C. _______, _______ D. _______, _______ c d

Identify the type circuit • 12. A. B. C. D. E. F. High voltage Normal voltage 125 volts 250 volts Both A & D Both A & C

Identify the following • 13. A. Duplex receptacle B. Grounded duplex receptacle C. Ground-fault circuit-interrupter receptacle D. Ground-fault circuitinterrupter circuit breaker

Test Review