C-201 Electrical Systems 1
SACA Certification Study Guide
2026/2027 Syllabus | Updated Version
Unit 1: Electrical Safety (NFPA 70E & LOTO)
1. What is the primary purpose of Lockout/Tagout (LOTO)?
ANSWER ✓ To prevent unexpected energization, startup, or release of hazardous energy
while machinery or equipment is being serviced or repaired.
2. What is the first and most critical step before working on an electrical circuit?
ANSWER ✓ Always use a properly rated circuit tester or voltage detector to verify that
the circuit is de-energized.
3. What is an electrical ground?
ANSWER ✓ A ground is a point in a circuit that provides a common return path for
electric current or a direct physical connection to the earth.
4. How can you test the integrity of a ground connection?
ANSWER ✓ Use a multimeter to measure resistance between the ground point and a
known earth ground. If the resistance is too high, the ground connection is not
providing adequate protection.
5. List three basic electrical safety rules to follow before starting work.
ANSWER ✓
1. Never touch electrical wiring or equipment with wet hands or while standing on a wet
surface.
2. Do not operate electrical equipment that has damaged, frayed, or exposed wiring.
3. Always use the correct fuse or circuit breaker rating for the circuit you are working on.
6. Why should you never remove or bypass the grounding prong on a plug?
ANSWER ✓ Removing the grounding prong eliminates a crucial safety path for fault
current, greatly increasing the risk of electric shock.
, 7. What are the risks of overloading an electrical circuit?
ANSWER ✓ Overloading a circuit by plugging in too many devices can cause excessive
heat, leading to damaged insulation, fire hazards, and tripped circuit breakers.
8. When is it permissible to use electrical equipment in wet or damp conditions?
ANSWER ✓ Only when the equipment is specifically designed and rated for that
purpose.
9. What is the function of a surge protector?
ANSWER ✓ A surge protector diverts excess voltage to the grounding wire, protecting
sensitive electronic equipment from voltage spikes.
10. What is the general rule regarding manufacturer's instructions for electrical
equipment?
ANSWER ✓ Always follow the manufacturer's instructions for using, maintaining, and
installing electrical equipment.
11. What is the purpose of insulated tools in electrical work?
ANSWER ✓ Insulated tools are designed to protect the user from electric shock if the
tool accidentally contacts an energized conductor.
12. Define "qualified person" in the context of electrical safety.
ANSWER ✓ A qualified person is one who has received specialized training in the
construction and operation of electrical equipment and has been made aware of the
hazards involved.
13. What is the difference between a fuse and a circuit breaker in terms of
operation after a fault?
ANSWER ✓ A fuse is a one-time use device that melts to open the circuit and must be
replaced. A circuit breaker can be reset (manually or automatically) after tripping.
14. What does the term "arc flash" refer to?
ANSWER ✓ An arc flash is a dangerous release of energy caused by an electrical fault,
creating intense heat, light, and pressure waves that can cause severe injury.
15. What type of Personal Protective Equipment (PPE) might be required for
electrical work?
ANSWER ✓ Examples include insulated gloves, safety glasses with side shields, arc-rated
face shields, flame-resistant (FR) clothing, and voltage-rated tools.
SACA Certification Study Guide
2026/2027 Syllabus | Updated Version
Unit 1: Electrical Safety (NFPA 70E & LOTO)
1. What is the primary purpose of Lockout/Tagout (LOTO)?
ANSWER ✓ To prevent unexpected energization, startup, or release of hazardous energy
while machinery or equipment is being serviced or repaired.
2. What is the first and most critical step before working on an electrical circuit?
ANSWER ✓ Always use a properly rated circuit tester or voltage detector to verify that
the circuit is de-energized.
3. What is an electrical ground?
ANSWER ✓ A ground is a point in a circuit that provides a common return path for
electric current or a direct physical connection to the earth.
4. How can you test the integrity of a ground connection?
ANSWER ✓ Use a multimeter to measure resistance between the ground point and a
known earth ground. If the resistance is too high, the ground connection is not
providing adequate protection.
5. List three basic electrical safety rules to follow before starting work.
ANSWER ✓
1. Never touch electrical wiring or equipment with wet hands or while standing on a wet
surface.
2. Do not operate electrical equipment that has damaged, frayed, or exposed wiring.
3. Always use the correct fuse or circuit breaker rating for the circuit you are working on.
6. Why should you never remove or bypass the grounding prong on a plug?
ANSWER ✓ Removing the grounding prong eliminates a crucial safety path for fault
current, greatly increasing the risk of electric shock.
, 7. What are the risks of overloading an electrical circuit?
ANSWER ✓ Overloading a circuit by plugging in too many devices can cause excessive
heat, leading to damaged insulation, fire hazards, and tripped circuit breakers.
8. When is it permissible to use electrical equipment in wet or damp conditions?
ANSWER ✓ Only when the equipment is specifically designed and rated for that
purpose.
9. What is the function of a surge protector?
ANSWER ✓ A surge protector diverts excess voltage to the grounding wire, protecting
sensitive electronic equipment from voltage spikes.
10. What is the general rule regarding manufacturer's instructions for electrical
equipment?
ANSWER ✓ Always follow the manufacturer's instructions for using, maintaining, and
installing electrical equipment.
11. What is the purpose of insulated tools in electrical work?
ANSWER ✓ Insulated tools are designed to protect the user from electric shock if the
tool accidentally contacts an energized conductor.
12. Define "qualified person" in the context of electrical safety.
ANSWER ✓ A qualified person is one who has received specialized training in the
construction and operation of electrical equipment and has been made aware of the
hazards involved.
13. What is the difference between a fuse and a circuit breaker in terms of
operation after a fault?
ANSWER ✓ A fuse is a one-time use device that melts to open the circuit and must be
replaced. A circuit breaker can be reset (manually or automatically) after tripping.
14. What does the term "arc flash" refer to?
ANSWER ✓ An arc flash is a dangerous release of energy caused by an electrical fault,
creating intense heat, light, and pressure waves that can cause severe injury.
15. What type of Personal Protective Equipment (PPE) might be required for
electrical work?
ANSWER ✓ Examples include insulated gloves, safety glasses with side shields, arc-rated
face shields, flame-resistant (FR) clothing, and voltage-rated tools.
