ETCP Certified Entertainment Electrician Exam
Practice Questions And Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
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1. Which of the following is the standard voltage for stage lighting in
North America?
A. 110V
B. 120V
C. 120/208V
D. 240V
The standard three-phase voltage commonly used in stage lighting is
120/208V.
2. What is the primary purpose of a dimmer in theatrical lighting?
A. Change lamp color
B. Control light intensity
C. Provide backup power
D. Synchronize lights
A dimmer adjusts the voltage to a fixture, controlling its brightness.
3. Which NEC article specifically covers temporary installations for
theatrical lighting?
A. 520
B. 520
, C. 530
D. 600
NEC Article 520 covers theaters, performance spaces, and similar
installations.
4. Which type of cable is most commonly used for moving lights?
A. THHN
B. Stage pin cable
C. Romex
D. Coaxial
Stage pin cable is designed for high-current loads and flexible
movement in theatrical applications.
5. Which color code is used for grounding conductors in the U.S.?
A. Red
B. Blue
C. Green or bare
D. White
Grounding conductors must be green or bare according to NEC
standards.
6. What is the maximum load typically allowed on a 20A, 120V
circuit for continuous use?
A. 16A
B. 18A
C. 16A (80% of circuit rating)
D. 20A
For continuous loads, NEC recommends using no more than 80% of the
rated circuit current.
, 7. What device provides protection against overloads and short
circuits?
A. Transformer
B. Circuit breaker
C. Dimmer
D. Relay
Circuit breakers interrupt current flow during overload or fault
conditions.
8. In DMX512 protocol, how many unique channels are available per
universe?
A. 128
B. 512
C. 1024
D. 256
DMX512 provides 512 discrete channels per universe.
9. When rigging a lighting truss, what is the most critical safety
consideration?
A. Aesthetics
B. Load rating and secure attachment
C. Cable length
D. Color of hardware
Ensuring the truss can safely support the weight of fixtures and
hardware is paramount.
10. What type of transformer is commonly used to isolate
dimmers from mains power?
A. Step-up
Practice Questions And Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1. Which of the following is the standard voltage for stage lighting in
North America?
A. 110V
B. 120V
C. 120/208V
D. 240V
The standard three-phase voltage commonly used in stage lighting is
120/208V.
2. What is the primary purpose of a dimmer in theatrical lighting?
A. Change lamp color
B. Control light intensity
C. Provide backup power
D. Synchronize lights
A dimmer adjusts the voltage to a fixture, controlling its brightness.
3. Which NEC article specifically covers temporary installations for
theatrical lighting?
A. 520
B. 520
, C. 530
D. 600
NEC Article 520 covers theaters, performance spaces, and similar
installations.
4. Which type of cable is most commonly used for moving lights?
A. THHN
B. Stage pin cable
C. Romex
D. Coaxial
Stage pin cable is designed for high-current loads and flexible
movement in theatrical applications.
5. Which color code is used for grounding conductors in the U.S.?
A. Red
B. Blue
C. Green or bare
D. White
Grounding conductors must be green or bare according to NEC
standards.
6. What is the maximum load typically allowed on a 20A, 120V
circuit for continuous use?
A. 16A
B. 18A
C. 16A (80% of circuit rating)
D. 20A
For continuous loads, NEC recommends using no more than 80% of the
rated circuit current.
, 7. What device provides protection against overloads and short
circuits?
A. Transformer
B. Circuit breaker
C. Dimmer
D. Relay
Circuit breakers interrupt current flow during overload or fault
conditions.
8. In DMX512 protocol, how many unique channels are available per
universe?
A. 128
B. 512
C. 1024
D. 256
DMX512 provides 512 discrete channels per universe.
9. When rigging a lighting truss, what is the most critical safety
consideration?
A. Aesthetics
B. Load rating and secure attachment
C. Cable length
D. Color of hardware
Ensuring the truss can safely support the weight of fixtures and
hardware is paramount.
10. What type of transformer is commonly used to isolate
dimmers from mains power?
A. Step-up
