Exam Practice Questions And Correct

ETCP Certified Entertainment Electrician Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• Which type of cable is most commonly used for high-power theatrical

lighting circuits?

• Cat5

B. SOOW

C. RG6

D. HDMI

Answer: SOOW

Rationale: SOOW cables are flexible, durable, and rated for high amperage

and outdoor use, making them ideal for theatrical power distribution.

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• What is the primary purpose of a circuit breaker in an entertainment

electrical system?

• Increase voltage
• Protect circuits from overcurrent
• Convert AC to DC
• Measure current

Answer: Protect circuits from overcurrent

Rationale: Circuit breakers interrupt the electrical flow when the current

exceeds the safe rating, preventing fires and equipment damage.

• In a three-phase system, what is the voltage between any two phases in

a 208V system?

A. 120V

B. 208V

• 208V line-to-line

D. 240V

Answer: 208V line-to-line

Rationale: In a 208V three-phase wye system, phase-to-neutral voltage is

120V, and phase-to-phase (line-to-line) voltage is 208V.

• What color is typically used for the neutral conductor in the U.S.?
• Red 2 / 4

• White
• Green
• Black

Answer: White

Rationale: White is the standard color code for neutral conductors in U.S.

electrical systems.

• Which device is used to dim traditional incandescent stage lights?
• Relay
• Transformer
• SCR dimmer
• Circuit breaker

Answer: SCR dimmer

Rationale: Silicon-Controlled Rectifiers (SCRs) control the RMS voltage to the

lamp, effectively dimming incandescent lighting.

• What is the typical frequency of AC power in the U.S.?
• 50 Hz
• 60 Hz
• 60 Hz
• 120 Hz 3 / 4

Answer: 60 Hz

Rationale: Standard AC mains in the U.S. operates at 60 cycles per second, or

60 Hz.

• Which type of connector is commonly used for stage lighting

instruments?

A. USB-C

• Edison (stage pin)

C. RJ45

D. HDMI

Answer: Edison (stage pin)

Rationale: Stage pin connectors are designed for high-current theatrical

lighting and allow secure connections in live environments.

• What is the minimum wire size for a 20A lighting circuit according to

NEC standards?

A. 18 AWG

B. 14 AWG

C. 12 AWG

• 10 AWG
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