Lesson 1 - Electrical Hazards
Electrical safety, shock, arc; Hazardous electrical locations
Learning Objectives:– List the three main factors that determine the effect of electric current on the human body.
– Explain what to do if a person is a victim of electric shock.
– Name four precautions you can take to guard against electric shock.
– Define the term qualified person.
– Summarize the basic rules of electrical safety.
Lesson 2 - Electrical Safety Equipment
Work clothes; PPE; Foot, head, eye, and face protection; Gloves; Respiratory protection; Lockout devices; Voltage testers
Learning Objectives:– Describe appropriate clothing and PPE to wear when working with electricity.
– Explain first aid procedures for eyes.
– Describe the devices used to lock out power.
– Tell how to keep plant personnel out of an area where electrical work is being performed.
– Explain the purpose of a voltage tester.
Lesson 3 - Electrical Safety Procedures
Energy control; Lockout/tagout procedures; Using power tools safely; Power tool safety rules; Recognizing electric shock victims; First aid for shock victims
Learning Objectives:– Explain the concepts of energy control and zero energy state.
– Summarize the OSHA lockout procedure.
– Explain how portable power tools are grounded.
– List some common symptoms of electric shock.
– Summarize the steps involved in administering CPR.
Lesson 4 - The National Electric Code®*
Overview of the NEC; Chapter 1: General NEC; Chapter 2: Wiring and Protection; Chapter 3: Wiring Methods and Materials; Chapter 4: Equipment for General Use; Chapter 5: Special Occupancies; Chapter 6: Special Equipment; Chapter 7: Special Conditions; Chapter 8: Communications Systems; Chapter 9: Tables; Annexes
Learning Objectives:– Understand the purpose and scope of the National Electrical Code.
– Define key terms related to the National Electrical Code.
– Determine requirements for electrical installations.
– Locate and reference common National Electrical Code articles.
– Identify common calculation tables.
Lesson 5 - Grounding, Ground Faults, and Short Circuits
Grounding, Ground Faults, and Short Circuits - Equipment, circuit, and transformer grounding; Effects of impedance; Grounded conductor alarms; Detecting faults automatically; Static electricity
Learning Objectives:– State the reason why circuits should be grounded.
– Explain how to test a circuit for proper grounding.
– Explain how a ground-fault circuit interrupter works.
– Contrast current electricity and static electricity and explain why each can be hazardous.
– Identify the correct extinguisher to use on flammable liquid fires and on energized electrical equipment fires.
Lesson 6 - Fuses and Circuit Breakers
Purpose of a fuse; Lead-wire, cartridge, power, plug, and glass-tube fuses; Thermal-magnetic and low-voltage power circuit breakers; Circuit breaker tripping
Learning Objectives:– Explain how a dual-element cartridge fuse works.
– List the NEC rules on installing fuses.
– Explain how a circuit breaker works.
– Describe molded-case circuit breakers.
– Explain the steps involved in fuse replacement and/or circuit breaker reset.
Lesson 7 - Motor Protection
Feeder size; Branch circuits; Motor-running overcurrent protection; Inherent thermal protection; Temperature-sensing devices; Melting-alloy and bimetallic relays; Selecting motor protection; Single phasing; Overload relays
Learning Objectives:– List the steps in determining the correct rating of the motor feeder protection.
– Explain how to select a thermal overload relay.
– Explain how thermostatic, resistance, and thermocouple detectors work.
– Contrast temperature-sensing devices and current-sensing devices.
– Explain how various relays provide motor protection.
– Define single phasing.