Michigan Electrical Sign Contractor License
Practice Exam 2026 | Verified Q&A with
Detailed Rationales | Code-Based Prep &
Instant PDF Download
• This 132-question verified practice exam mirrors the content and style of the
Michigan Electrical Sign Contractor License exam, covering NEC Article 600,
grounding, wiring methods, transformers, LED and neon technology, Michigan
licensing law, and electrical safety — with detailed EXPERT RATIONALE after every
answer.
• Study by attempting each question on your own before checking the highlighted
correct answer and EXPERT RATIONALE — flag any missed questions and revisit
them until you score above 80% consistently on repeat attempts.
MICHIGAN ELECTRICAL SIGN CONTRACTOR LICENSE PRACTICE EXAM 2026
132 Questions | Verified Answers | Detailed EXPERT RATIONALE
SECTION 1: NEC Article 600 — Electric Signs and Outline Lighting
1. According to NEC Article 600, what is the minimum branch circuit rating
required for a sign or outline lighting system?
A) 15 amperes
B) 20 amperes
C) 25 amperes
D) 30 amperes
E) 50 amperes
✓ Correct Answer: B) 20 amperes
,EXPERT RATIONALE: NEC 600.5(B) specifies that branch circuits supplying signs or
outline lighting shall be rated at no more than 20 amperes. Each sign must be
supplied by a branch circuit of at least 20A to ensure adequate capacity while
maintaining circuit protection standards.
2. Where must the disconnecting means for an electric sign be located?
A) At the main electrical panel only
B) In the sign enclosure only
C) Anywhere on the property
D) At the nearest junction box
E) Within sight of the sign and not more than 50 feet away
✓ Correct Answer: E) Within sight of the sign and not more than 50 feet away
EXPERT RATIONALE: NEC 600.6(A)(1) requires the disconnecting means to be
within sight of the sign and not more than 50 feet from it, unless it is capable of
being locked in the open position. This ensures safe de-energization of the sign
during maintenance.
3. According to NEC 600.4, electric signs and outline lighting equipment shall
be:
A) Inspected by the local authority only
B) Installed by a licensed electrician only
C) Approved by the manufacturer only
D) Tested annually by a certified technician
E) Listed
✓ Correct Answer: E) Listed
,EXPERT RATIONALE: NEC 600.4(A) requires that all electric signs and outline
lighting systems shall be listed. The listing ensures that the equipment has been
evaluated and meets applicable safety standards through a nationally recognized
testing laboratory.
4. What is the minimum clearance height required for an electric sign above
areas accessible to vehicles?
A) 8 feet
B) 10 feet
C) 12 feet
D) 14 feet
E) 16 feet
✓ Correct Answer: D) 14 feet
EXPERT RATIONALE: NEC 600.9(A) states that signs and outline lighting systems
shall be located at least 14 feet above areas accessible to vehicles unless protected
from physical damage. This clearance prevents damage from vehicles and ensures
public safety.
5. The disconnecting means for an electric sign must disconnect which
conductors?
A) Only the grounded conductor
B) Only the equipment grounding conductor
C) All conductors including the EGC
D) The grounded conductor only when the sign is outdoors
E) All ungrounded conductors
✓ Correct Answer: E) All ungrounded conductors
, EXPERT RATIONALE: NEC 600.6 requires the disconnecting means to open all
ungrounded conductors simultaneously. This ensures the sign is completely de-
energized for safe maintenance and service work.
6. Which types of signs are required to be listed according to NEC 600.4?
A) Neon signs only
B) LED signs only
C) Outdoor signs only
D) Internally illuminated signs only
E) All electric signs and outline lighting
✓ Correct Answer: E) All electric signs and outline lighting
EXPERT RATIONALE: NEC 600.4(A) requires that ALL electric signs and outline
lighting, whether fixed, mobile, or portable, shall be listed. There are no exceptions
based on sign type or location.
7. What is the maximum branch circuit rating permitted for signs according to
NEC 600.5(B)?
A) 15 amperes
B) 25 amperes
C) 30 amperes
D) 40 amperes
E) 20 amperes
✓ Correct Answer: E) 20 amperes
EXPERT RATIONALE: NEC 600.5(B) limits branch circuits supplying signs or outline
lighting systems to a maximum of 20 amperes. This applies to all sign types
including neon, LED, and incandescent sign installations.
Practice Exam 2026 | Verified Q&A with
Detailed Rationales | Code-Based Prep &
Instant PDF Download
• This 132-question verified practice exam mirrors the content and style of the
Michigan Electrical Sign Contractor License exam, covering NEC Article 600,
grounding, wiring methods, transformers, LED and neon technology, Michigan
licensing law, and electrical safety — with detailed EXPERT RATIONALE after every
answer.
• Study by attempting each question on your own before checking the highlighted
correct answer and EXPERT RATIONALE — flag any missed questions and revisit
them until you score above 80% consistently on repeat attempts.
MICHIGAN ELECTRICAL SIGN CONTRACTOR LICENSE PRACTICE EXAM 2026
132 Questions | Verified Answers | Detailed EXPERT RATIONALE
SECTION 1: NEC Article 600 — Electric Signs and Outline Lighting
1. According to NEC Article 600, what is the minimum branch circuit rating
required for a sign or outline lighting system?
A) 15 amperes
B) 20 amperes
C) 25 amperes
D) 30 amperes
E) 50 amperes
✓ Correct Answer: B) 20 amperes
,EXPERT RATIONALE: NEC 600.5(B) specifies that branch circuits supplying signs or
outline lighting shall be rated at no more than 20 amperes. Each sign must be
supplied by a branch circuit of at least 20A to ensure adequate capacity while
maintaining circuit protection standards.
2. Where must the disconnecting means for an electric sign be located?
A) At the main electrical panel only
B) In the sign enclosure only
C) Anywhere on the property
D) At the nearest junction box
E) Within sight of the sign and not more than 50 feet away
✓ Correct Answer: E) Within sight of the sign and not more than 50 feet away
EXPERT RATIONALE: NEC 600.6(A)(1) requires the disconnecting means to be
within sight of the sign and not more than 50 feet from it, unless it is capable of
being locked in the open position. This ensures safe de-energization of the sign
during maintenance.
3. According to NEC 600.4, electric signs and outline lighting equipment shall
be:
A) Inspected by the local authority only
B) Installed by a licensed electrician only
C) Approved by the manufacturer only
D) Tested annually by a certified technician
E) Listed
✓ Correct Answer: E) Listed
,EXPERT RATIONALE: NEC 600.4(A) requires that all electric signs and outline
lighting systems shall be listed. The listing ensures that the equipment has been
evaluated and meets applicable safety standards through a nationally recognized
testing laboratory.
4. What is the minimum clearance height required for an electric sign above
areas accessible to vehicles?
A) 8 feet
B) 10 feet
C) 12 feet
D) 14 feet
E) 16 feet
✓ Correct Answer: D) 14 feet
EXPERT RATIONALE: NEC 600.9(A) states that signs and outline lighting systems
shall be located at least 14 feet above areas accessible to vehicles unless protected
from physical damage. This clearance prevents damage from vehicles and ensures
public safety.
5. The disconnecting means for an electric sign must disconnect which
conductors?
A) Only the grounded conductor
B) Only the equipment grounding conductor
C) All conductors including the EGC
D) The grounded conductor only when the sign is outdoors
E) All ungrounded conductors
✓ Correct Answer: E) All ungrounded conductors
, EXPERT RATIONALE: NEC 600.6 requires the disconnecting means to open all
ungrounded conductors simultaneously. This ensures the sign is completely de-
energized for safe maintenance and service work.
6. Which types of signs are required to be listed according to NEC 600.4?
A) Neon signs only
B) LED signs only
C) Outdoor signs only
D) Internally illuminated signs only
E) All electric signs and outline lighting
✓ Correct Answer: E) All electric signs and outline lighting
EXPERT RATIONALE: NEC 600.4(A) requires that ALL electric signs and outline
lighting, whether fixed, mobile, or portable, shall be listed. There are no exceptions
based on sign type or location.
7. What is the maximum branch circuit rating permitted for signs according to
NEC 600.5(B)?
A) 15 amperes
B) 25 amperes
C) 30 amperes
D) 40 amperes
E) 20 amperes
✓ Correct Answer: E) 20 amperes
EXPERT RATIONALE: NEC 600.5(B) limits branch circuits supplying signs or outline
lighting systems to a maximum of 20 amperes. This applies to all sign types
including neon, LED, and incandescent sign installations.
