Maryland Master Electrician Exam 2026 – 190 Practice Questions
with Answers & Detailed Rationales, NEC 2026, Electrical Theory,
Load Calculations, Wiring Methods, Protection, Equipment, High-
Voltage Systems & Code Compliance
Section 1: General Requirements & Code Structure (Questions 1–20)
Question 1
According to the 2026 NEC, which new Article covers Branch-Circuit, Feeder, and Service
Load Calculations?
A. Article 220
B. Article 120
C. Article 215
D. Article 125
Correct Answer: B
Explanation: The 2026 NEC relocated load calculation requirements from Article 220 to
Article 120 as part of a structural reorganization to modernize the code .
Question 2
A licensed electrician is preparing to install a new service for a single-family dwelling. Where
must the service disconnecting means be located according to 2026 NEC Section 230.70?
A. Inside the dwelling at the nearest point of entrance
B. In a readily accessible outdoor location on or within sight of the dwelling
C. In the basement adjacent to the panelboard
D. In an attached garage with direct exterior access
,Correct Answer: B
Explanation: The 2026 NEC incorporated language requiring outdoor service disconnects for
one- and two-family dwellings to improve emergency accessibility .
Question 3
Which Article in the 2026 NEC now covers Energy Management and Power Control Systems?
A. Article 750
B. Article 130
C. Article 220
D. Article 625
Correct Answer: B
Explanation: Energy Management requirements were relocated from Article 750 to new
Article 130 to consolidate power control provisions within Chapter 1 .
Question 4
Under the 2026 NEC, a "cable tie" used for securing and supporting wiring methods must be:
A. Made of UV-resistant nylon
B. Listed for the application
C. Color-coded by wire gauge
D. Rated for wet locations
Correct Answer: B
,Explanation: Section 300.13(E) introduces listing requirements for cable ties and fixing
devices, with types 2S and 21S specifically evaluated for support applications .
Question 5
Article 267 of the 2026 NEC provides requirements for:
A. Feeders over 1000V AC
B. Outside Branch Circuits and Feeders over 1000V AC
C. Services over 1000V AC
D. Grounding of systems over 1000V AC
Correct Answer: B
Explanation: New Article 267 specifically addresses outside branch circuits and feeders over
1000V AC/1500V DC, extracted from the former Article 235 .
Question 6
A commercial building's electrical system operates at 480V/277V. Which Article contains the
grounding and bonding requirements for this system?
A. Article 270
B. Article 250
C. Article 260
D. Article 265
Correct Answer: B
, Explanation: Article 250 continues to govern grounding and bonding for systems not
exceeding 1000V AC/1500V DC; Article 270 covers higher-voltage systems .
Question 7
When a raceway transitions between different wiring methods in a 2026 NEC installation,
the 360-degree bend limitation applies:
A. Only to the primary raceway method
B. Across both methods cumulatively
C. Separately to each method
D. Only when specified by the manufacturer
Correct Answer: B
Explanation: New Section 300.24 clarifies that the 360-degree limitation applies
cumulatively across transitions between different raceway types .
Question 8
In the 2026 NEC, switches such as dimmers and electronic control switches are now covered
under:
A. Article 404, Part II
B. Article 406, Part III
C. Article 410, Part IV
D. Article 408, Part I
Correct Answer: B
with Answers & Detailed Rationales, NEC 2026, Electrical Theory,
Load Calculations, Wiring Methods, Protection, Equipment, High-
Voltage Systems & Code Compliance
Section 1: General Requirements & Code Structure (Questions 1–20)
Question 1
According to the 2026 NEC, which new Article covers Branch-Circuit, Feeder, and Service
Load Calculations?
A. Article 220
B. Article 120
C. Article 215
D. Article 125
Correct Answer: B
Explanation: The 2026 NEC relocated load calculation requirements from Article 220 to
Article 120 as part of a structural reorganization to modernize the code .
Question 2
A licensed electrician is preparing to install a new service for a single-family dwelling. Where
must the service disconnecting means be located according to 2026 NEC Section 230.70?
A. Inside the dwelling at the nearest point of entrance
B. In a readily accessible outdoor location on or within sight of the dwelling
C. In the basement adjacent to the panelboard
D. In an attached garage with direct exterior access
,Correct Answer: B
Explanation: The 2026 NEC incorporated language requiring outdoor service disconnects for
one- and two-family dwellings to improve emergency accessibility .
Question 3
Which Article in the 2026 NEC now covers Energy Management and Power Control Systems?
A. Article 750
B. Article 130
C. Article 220
D. Article 625
Correct Answer: B
Explanation: Energy Management requirements were relocated from Article 750 to new
Article 130 to consolidate power control provisions within Chapter 1 .
Question 4
Under the 2026 NEC, a "cable tie" used for securing and supporting wiring methods must be:
A. Made of UV-resistant nylon
B. Listed for the application
C. Color-coded by wire gauge
D. Rated for wet locations
Correct Answer: B
,Explanation: Section 300.13(E) introduces listing requirements for cable ties and fixing
devices, with types 2S and 21S specifically evaluated for support applications .
Question 5
Article 267 of the 2026 NEC provides requirements for:
A. Feeders over 1000V AC
B. Outside Branch Circuits and Feeders over 1000V AC
C. Services over 1000V AC
D. Grounding of systems over 1000V AC
Correct Answer: B
Explanation: New Article 267 specifically addresses outside branch circuits and feeders over
1000V AC/1500V DC, extracted from the former Article 235 .
Question 6
A commercial building's electrical system operates at 480V/277V. Which Article contains the
grounding and bonding requirements for this system?
A. Article 270
B. Article 250
C. Article 260
D. Article 265
Correct Answer: B
, Explanation: Article 250 continues to govern grounding and bonding for systems not
exceeding 1000V AC/1500V DC; Article 270 covers higher-voltage systems .
Question 7
When a raceway transitions between different wiring methods in a 2026 NEC installation,
the 360-degree bend limitation applies:
A. Only to the primary raceway method
B. Across both methods cumulatively
C. Separately to each method
D. Only when specified by the manufacturer
Correct Answer: B
Explanation: New Section 300.24 clarifies that the 360-degree limitation applies
cumulatively across transitions between different raceway types .
Question 8
In the 2026 NEC, switches such as dimmers and electronic control switches are now covered
under:
A. Article 404, Part II
B. Article 406, Part III
C. Article 410, Part IV
D. Article 408, Part I
Correct Answer: B
