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New Mexico ER-1J Residential Journeyman EXAM QUESTIONS AND CORRECT VERIFIED SOLUTIONS LATEST UPDATE THIS YEAR – JUST RELEASED.pdf

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Tap on AVAILABLE IN BUNDLE/PACKAGE DEAL to unlock free bonus exams – save more while you get what you need. The New Mexico ER-1J Residential Journeyman Exam Questions and Correct Verified Solutions – Latest Updated Edition is a comprehensive study resource designed to help candidates prepare for the New Mexico ER-1J Journeyman Residential Wiring certification examinations administered through the New Mexico Regulation and Licensing Department (RLD) and PSI. New Mexico identifies ER-1J as the Journeyman Residential Wiring classification, which allows work under an ER-1 or EE-98 contractor license within the applicable scope. The resource covers the principal ER-1J electrical wiring topics, including general electrical knowledge, residential installation requirements, services, feeders, branch circuits, overcurrent protection, grounding and bonding, conductors and cables, raceways and boxes, special occupancies and equipment, pools, lighting, general-use equipment, low-voltage systems, and New Mexico electrical requirements. A major focus is the two-part ER-1J examination. The current PSI examination bulletin identifies Part 1 – Code as a 40-question examination requiring 75% (30 points) to pass, with 90 minutes allowed. Part 2 – Theory contains 25 questions, requires 75% (19 points), and allows 60 minutes. The Code Examination section emphasizes the 2020 National Electrical Code (NFPA 70) and the 2020 New Mexico Electrical Code (NMAC 14.10.4). Candidates review how to locate and apply residential electrical-code provisions involving installation requirements, conductors, raceways, grounding, overcurrent protection, services, feeders, branch circuits, and equipment. The study guide also covers services, feeders, and branch circuits, including conductor sizing, circuit requirements, load considerations, disconnecting means, panelboards, branch-circuit applications, and common residential installation scenarios. Another major section addresses overcurrent protection, including circuit breakers, fuses, conductor protection, equipment protection, and selecting appropriate protective devices for residential circuits. The material reinforces grounding and bonding, including grounding electrode systems, equipment grounding conductors, bonding requirements, grounding connections, and common residential electrical-system configurations. Candidates also review conductors and cables, including conductor identification, ampacity concepts, insulation, cable installation, termination, protection from physical damage, and appropriate applications for residential wiring. The guide includes raceways and boxes, covering box selection, conductor fill, raceway applications, fittings, cable entries, accessibility, support, protection, and installation practices. Special occupancies and special equipment, including residential swimming pools and related electrical installations, receive dedicated attention. Questions are designed to test recognition of special safety requirements and appropriate electrical installation practices. The resource also addresses lighting and general-use equipment, including luminaires, receptacles, switches, appliances, general-purpose circuits, installation requirements, and residential equipment connections. Low-voltage systems are another examination area. Candidates review basic requirements and installation practices for systems operating at lower voltages and the circumstances in which specialized requirements apply. The Theory Examination places greater emphasis on electrical principles and practical trade knowledge. The current PSI outline includes general electrical and installation knowledge, services/feeders/branch circuits, overcurrent protection, grounding and bonding, conductors and cables, raceways and boxes, special occupancies/equipment, lighting/general-use equipment, New Mexico State Code, and low voltage. The resource also supports preparation for residential troubleshooting and installation scenarios, helping candidates determine appropriate wiring methods, protection, conductor requirements, grounding methods, and equipment connections. New Mexico's current journeyman guidance identifies two years or 4,000 hours of experience for the ER-1J classification. PSI's experience-verification materials specifically describe residential electrical experience such as underground installation, rough-in installation, and trim-out work. Candidates should also understand the relationship between ER-1J and contractor classifications. Under the current proposed New Mexico rules, an ER-1J Journeyman Residential Wiring certificate holder can work under an EE-98 or ER-1 license, while the work performed must remain within the applicable contractor-license scope. For 2026 preparation, candidates should pay attention to current New Mexico RLD rulemaking. The Construction Industries Division has proposed amendments affecting journeyman certification and electrical classifications, so candidates should verify the applicable rules and examination bulletin before testing. The New Mexico RLD confirms that candidates register for Construction Industries examinations through PSI, and passing scores remain valid for one year after the examination. The resource should be treated as a study and practice resource rather than an official or leaked PSI examination. Claims that third-party materials contain “actual,” “verified,” or “just released” examination questions should not be interpreted as confirmation that they reproduce the secure ER-1J examination. Aligned with the current New Mexico ER-1J Journeyman Residential Wiring examination framework, this study guide supports preparation in NEC requirements, New Mexico electrical code, residential wiring, services, feeders, branch circuits, overcurrent protection, grounding and bonding, conductors, cables, raceways, boxes, pools and special equipment, lighting, general-use equipment, low voltage, and electrical theory. Ideal for New Mexico residential electricians, electrical apprentices transitioning toward journeyman certification, experienced electrical workers, electrical contractors, and candidates preparing for the ER-1J Journeyman Residential Wiring examinations, this resource provides focused review material, exam-style practice questions, and solution explanations to support effective preparation.

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Page 1 of 100


New Mexico ER-1J Residential Journeyman EXAM QUESTIONS
AND CORRECT VERIFIED SOLUTIONS LATEST UPDATE THIS
YEAR – JUST RELEASED
New Mexico ER-1J Residential Journeyman Exam


EXAM COVERAGE OVERVIEW (10 Key Points)
1. License Classification – The ER-1J is the Residential Journeyman classification, covering
one- and two-family dwellings and multi-family ground-floor units only. Contracting is
limited to four dwelling units per building. The license does not cover commercial work
(motels, hotels, etc.).
2. Governing Agency – The New Mexico Regulation and Licensing Department (RLD),
Construction Industries Division (CID), administers all electrical licensing under the
Electrical Bureau.
3. Experience Requirements – Applicants must have two years (4,000 hours) of residential
wiring experience.
4. Examination Format – The exam is open book, with two parts: Part 1 (Code) and Part 2
(Theory). Minimum passing score is 75%.
5. Applicable Code – Starting December 15, 2024, all exams are based on the 2020
National Electrical Code (NEC). The New Mexico Electrical Code (NMAC 14.10.4) is also
a permitted reference.
6. Permitted References – Allowed references include the 2020 NEC, Ferm's Fast Finder
Index, Tom Henry's Key Word Index, Ugly's Electrical References, and Practical
Calculations for Electricians.
7. Continuing Education – Renewal requires 16 hours of CE every 3 years, with at least 8
hours covering the current CID code. The current certificate edition is adopted by CID.
8. License Renewal – The renewal application must be submitted annually; incomplete or
untimely applications result in suspension subject to cancellation.
9. Solar & Wind Work – The ER-1J license qualifies for installation of solar PV collector
systems and wind turbine systems (10 kW or less).
10. Key NEC Topics – The exam includes grounding/bonding (Tables 250.66, 250.122),
conductor ampacity (Table 310.16), residential load calculations, overcurrent
protection (Article 240), GFCI/AFCI requirements (210.8, 210.12), support/spacing
rules, and raceway fill.

, Page 2 of 100

QUESTIONS 1-250




LICENSING & REGULATIONS (Questions 1-20)


1. According to New Mexico regulation, which work scope is authorized under the ER-1J

Residential Journeyman license?

A) Any residential and commercial electrical work

B) One- and two-family dwellings only, with multi-family units limited to ground floor and no

occupancies above or below

C) All multi-family dwellings without restriction

D) Only new construction residential work


Correct Answer: B

Rationale: New Mexico regulations define the ER-1 license as covering "one- and two-family

dwelling units and multi-family dwellings when all such units are all on the ground floor with no

occupancies above or below, as set forth in 14.10.4 NMAC." The classification is restricted from

commercial work and may not contract for more than four dwelling units in any single building.


2. How many years of experience are required to qualify for the ER-1J Residential Journeyman

license?

A) 1 year (2,000 hours)

B) 2 years (4,000 hours)

C) 3 years (6,000 hours)

D) 4 years (8,000 hours)

, Page 3 of 100


Correct Answer: B

Rationale: The ER-1J license requires two years (4,000 hours) of residential wiring experience.

This is consistent with the journeyman licensing structure in New Mexico.


3. Which New Mexico agency administers the ER-1J licensing examination?

A) New Mexico Department of Transportation

B) New Mexico Regulation and Licensing Department (RLD), Construction Industries Division

(CID)

C) New Mexico Public Regulation Commission

D) New Mexico Department of Workforce Solutions


Correct Answer: B

Rationale: The New Mexico Regulation and Licensing Department (RLD), through its

Construction Industries Division (CID), administers electrical licensing and examinations for all

classifications, including ER-1J.


4. What is the minimum passing score required for the ER-1J examination?

A) 65%

B) 70%

C) 75%

D) 80%


Correct Answer: C

Rationale: The ER-1J examination requires a minimum passing score of 75%.

, Page 4 of 100


5. Which edition of the National Electrical Code is used for the ER-1J exam starting December

15, 2024?

A) 2017 NEC

B) 2020 NEC

C) 2023 NEC

D) 2026 NEC


Correct Answer: B

Rationale: The 2020 NEC edition is effective for New Mexico electrical examinations starting

December 15, 2024. The New Mexico Electrical Code (NMAC 14.10.4) is also referenced.


6. What is the maximum number of dwelling units an ER-1 contractor may contract for in a

single building?

A) 2 units

B) 3 units

C) 4 units

D) 6 units


Correct Answer: C

Rationale: New Mexico regulations state that ER-1 contractors may not contract for more than

four (4) dwelling units in any single building or structure.


7. The ER-1J license specifically prohibits installation of wiring for which occupancy type?

A) Single-family homes

B) Duplexes

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