ETCP CERTIFIED ENTERTAINMENT
ELECTRICIAN PRACTICE EXAM
QUESTION AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES
2026 Q&A INSTANT DOWNLOAD PDF
1. What is the standard color for equipment grounding conductors (earth) in
U.S. electrical systems?
A. Black
B. Green
C. Red
D. White
Correct Answer: B. Green
Rationale: Green is the designated color for equipment grounding
conductors per NEC.
2. What does NEC stand for?
A. National Electrical Code
B. National Equipment Checklist
C. Non-Electrical Classification
D. National Electrical Code
Correct Answer: D. National Electrical Code
Rationale: NEC is the standard for electrical safety in the U.S.
3. What is the minimum clearance from a lighting instrument to combustible
materials?
A. 1 inch
B. 12 inches
C. 6 inches
D. 24 inches
, Correct Answer: B. 12 inches
Rationale: To prevent fire hazards, fixtures must be kept a safe distance
from combustibles.
4. Which fixture component focuses light?
A. Lamp base
B. Reflector
C. Yoke
D. Gel frame
Correct Answer: B. Reflector
Rationale: Reflector directs and shapes the light beam.
5. What is a dimmer?
A. Power source
B. Device to adjust light intensity
C. Cable clamp
D. Grounding rod
Correct Answer: B. Device to adjust light intensity
Rationale: Dimmers vary voltage to control output.
6. What is a common pin count for a 3-phase power connector used in
entertainment?
A. 2
B. 3
C. 5
D. 7
Correct Answer: C. 5
Rationale: 5 pins typically include 3 phases, neutral, and ground.
7. What is the purpose of a safety cable on a lighting instrument?
A. Cosmetic
B. Secondary attachment for safety
C. Electrical connection
D. Color coding
Correct Answer: B. Secondary attachment for safety
Rationale: Safety cables prevent falling fixtures if clamp fails.
, 8. What is the unit of resistance?
A. Watt
B. Ohm
C. Ampere
D. Volt
Correct Answer: B. Ohm
Rationale: Resistance is measured in ohms (Ω).
9. What does GFCI protect against?
A. Circuit overload
B. Ground fault current
C. Voltage spikes
D. Short circuits
Correct Answer: B. Ground fault current
Rationale: GFCIs detect imbalance between hot and neutral.
10.What is the typical mains voltage in the U.S.?
A. 120 V
B. 120/208 V or 120/240 V
C. 230 V only
D. 277 V only
Correct Answer: B. 120/208 V or 120/240 V
Rationale: Common configurations in venues include 120/208 and
120/240.
11.What does a DMX address assign?
A. Sound channel
B. Lighting channel
C. Electrical panel label
D. Rigging point
Correct Answer: B. Lighting channel
Rationale: DMX addresses control specific parameters of a fixture.
12.Which pin in DMX is data-1?
A. Pin 1
B. Pin 2
C. Pin 2
ELECTRICIAN PRACTICE EXAM
QUESTION AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES
2026 Q&A INSTANT DOWNLOAD PDF
1. What is the standard color for equipment grounding conductors (earth) in
U.S. electrical systems?
A. Black
B. Green
C. Red
D. White
Correct Answer: B. Green
Rationale: Green is the designated color for equipment grounding
conductors per NEC.
2. What does NEC stand for?
A. National Electrical Code
B. National Equipment Checklist
C. Non-Electrical Classification
D. National Electrical Code
Correct Answer: D. National Electrical Code
Rationale: NEC is the standard for electrical safety in the U.S.
3. What is the minimum clearance from a lighting instrument to combustible
materials?
A. 1 inch
B. 12 inches
C. 6 inches
D. 24 inches
, Correct Answer: B. 12 inches
Rationale: To prevent fire hazards, fixtures must be kept a safe distance
from combustibles.
4. Which fixture component focuses light?
A. Lamp base
B. Reflector
C. Yoke
D. Gel frame
Correct Answer: B. Reflector
Rationale: Reflector directs and shapes the light beam.
5. What is a dimmer?
A. Power source
B. Device to adjust light intensity
C. Cable clamp
D. Grounding rod
Correct Answer: B. Device to adjust light intensity
Rationale: Dimmers vary voltage to control output.
6. What is a common pin count for a 3-phase power connector used in
entertainment?
A. 2
B. 3
C. 5
D. 7
Correct Answer: C. 5
Rationale: 5 pins typically include 3 phases, neutral, and ground.
7. What is the purpose of a safety cable on a lighting instrument?
A. Cosmetic
B. Secondary attachment for safety
C. Electrical connection
D. Color coding
Correct Answer: B. Secondary attachment for safety
Rationale: Safety cables prevent falling fixtures if clamp fails.
, 8. What is the unit of resistance?
A. Watt
B. Ohm
C. Ampere
D. Volt
Correct Answer: B. Ohm
Rationale: Resistance is measured in ohms (Ω).
9. What does GFCI protect against?
A. Circuit overload
B. Ground fault current
C. Voltage spikes
D. Short circuits
Correct Answer: B. Ground fault current
Rationale: GFCIs detect imbalance between hot and neutral.
10.What is the typical mains voltage in the U.S.?
A. 120 V
B. 120/208 V or 120/240 V
C. 230 V only
D. 277 V only
Correct Answer: B. 120/208 V or 120/240 V
Rationale: Common configurations in venues include 120/208 and
120/240.
11.What does a DMX address assign?
A. Sound channel
B. Lighting channel
C. Electrical panel label
D. Rigging point
Correct Answer: B. Lighting channel
Rationale: DMX addresses control specific parameters of a fixture.
12.Which pin in DMX is data-1?
A. Pin 1
B. Pin 2
C. Pin 2
