QUESTIONS FORM A REAL EXAM LATEST 2026-2027
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1. The primary NEC article governing electric signs and outline lighting is:
A. Article 600
B. Article 410
C. Article 725
D. Article 680
A. Article 600
NEC Article 600 specifically covers electric signs, outline lighting, and
skeleton tubing.
2. According to NEC, a disconnecting means for an electric sign must be
located:
A. Inside the sign enclosure only
B. At the service equipment
C. Within sight of the sign
D. On the roof of the building
C. Within sight of the sign
Article 600 requires a disconnect within sight for safety during servicing.
3. “Within sight” as defined by the NEC means visible and not more than:
A. 10 feet
B. 25 feet
C. 50 feet
D. 100 feet
C. 50 feet
NEC defines “within sight” as visible and within 50 feet.
,4. Conductors supplying an outdoor sign must be rated for:
A. Dry locations only
B. Damp locations only
C. Wet locations if exposed
D. Underground use only
C. Wet locations if exposed
Outdoor sign wiring is often exposed to weather and must be wet-location
rated.
5. A sign disconnect must open:
A. The grounded conductor only
B. The ungrounded conductors
C. Only one phase
D. The equipment grounding conductor
B. The ungrounded conductors
Ungrounded (hot) conductors must be disconnected for safe servicing.
6. The minimum working clearance in front of a sign disconnect rated 600
volts or less is:
A. 2 feet
B. 3 feet
C. 4 feet
D. 6 feet
B. 3 feet
NEC working space rules apply to sign disconnects.
7. Flexible cords used to connect signs must be:
A. Permanently installed
B. Shorter than 3 feet
C. Extra-hard usage type if exposed
D. Aluminum only
C. Extra-hard usage type if exposed
Outdoor signs require durable flexible cords.
, 8. Which of the following grounding methods is acceptable for metal sign
frames?
A. Connection to neutral
B. Bonding to building steel only
C. Equipment grounding conductor
D. Paint-covered grounding lug
C. Equipment grounding conductor
Metal parts must be bonded using an approved EGC.
9. Branch circuits supplying electric signs shall be rated at least:
A. 15 amperes
B. 20 amperes
C. 30 amperes
D. As specified by the manufacturer
D. As specified by the manufacturer
Manufacturer instructions are mandatory under NEC 110.3(B).
10.When a sign is supplied by a transformer, the transformer must be:
A. Indoors only
B. Listed and accessible
C. Hidden from view
D. Painted red
B. Listed and accessible
Transformers must be listed and accessible for servicing.
11.Outline lighting installed outdoors must be protected against:
A. Physical damage
B. Ultraviolet light
C. Vibration only
D. Wind load only
A. Physical damage
NEC requires protection where subject to damage.
12.A disconnecting means for a sign must be capable of being:
A. Locked in the ON position