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New Mexico Low Voltage Journeyman ES3J 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 Low Voltage Journeyman ES-3J Exam Questions and Correct Verified Solutions – Latest Updated Edition is a comprehensive study resource designed to help candidates prepare for the New Mexico ES-3J Journeyman Low Voltage Special Systems examination administered through the New Mexico Regulation and Licensing Department (RLD) and PSI. The current New Mexico classification identifies ES-3J as the Journeyman sound, intercommunication, electrical alarm systems, and systems 50 volts and under classification. It requires two years of experience, and an ES-3J certificate holder may work under an ES-3, ER-1, or EE-98 contractor license within the applicable scope. The resource covers the major low-voltage trade-knowledge areas, including grounding and bonding, conductors, electrical power conditioning, electrical and electronic knowledge, general low-voltage systems, sound and video systems, intrusion detection and alarms, fire detection and alarms, computer and data systems, CCTV, testing equipment, and CATV/MATV systems. These subjects correspond to the ES-3J examination content outline published by PSI. A major section focuses on electrical and electronic fundamentals, including voltage, current, resistance, power, circuit operation, polarity, basic electronic components, power supplies, transformers, signal transmission, and troubleshooting principles. The guide also covers grounding and bonding, including grounding conductors, bonding requirements, grounding of low-voltage equipment, communications-system grounding, and safe interconnection with building electrical systems. Conductors and cabling receive dedicated attention, including conductor identification, cable types, installation methods, termination, splicing, protection from physical damage, support, separation from other wiring, and appropriate applications. The resource addresses electrical power conditioning, including power supplies, surge protection, filtering, backup power, batteries, and maintaining appropriate power quality for sensitive electronic and alarm equipment. A substantial section covers sound and video systems, including speakers, amplifiers, microphones, signal paths, impedance concepts, audio distribution, video transmission, connectors, and troubleshooting of signal-quality problems. Intrusion detection and alarm systems are another important examination area. Candidates review sensors, initiating devices, alarm-control equipment, notification devices, supervised circuits, power supplies, wiring, access-control components, and system troubleshooting. The guide provides dedicated preparation for fire detection and alarm systems, including initiating devices, notification appliances, control panels, signaling circuits, power supplies, supervision, system testing, and applicable fire-alarm requirements. The material also covers computer and data systems, including structured cabling, data transmission, network components, connectors, patch panels, cable testing, equipment rooms, and troubleshooting network connectivity. CCTV systems are addressed through questions involving cameras, video transmission, recording equipment, power, cabling, signal quality, system configuration, and common installation problems. The resource further reviews testing equipment, including appropriate test instruments, continuity testing, cable testing, signal measurements, troubleshooting procedures, and safe testing practices. CATV and MATV systems receive specific attention, including coaxial cabling, distribution systems, amplifiers, splitters, connectors, signal loss, antennas, grounding, and troubleshooting. For the examination itself, the PSI bulletin lists 50 questions, a 75% passing requirement (38 points), and 145 minutes for the ES-3J Journeyman Low Voltage Special Systems examination. The resource also reinforces the distinction between ES-3J and ES-3. ES-3J is the journeyman classification for performing qualifying low-voltage special-system work, whereas ES-3 is the corresponding contractor classification. The ES-3J scope is limited to the systems covered by the classification rather than unrestricted electrical contracting. Candidates should also understand the New Mexico licensing and examination process. The RLD states that Construction Industries examinations are administered by PSI, and applicants must receive approval before scheduling the applicable examination. Passing scores are valid for one year. For 2026 preparation, candidates should verify the latest PSI Candidate Information Bulletin and New Mexico rules before testing. The RLD has been conducting rulemaking affecting journeyman certification and contractor classifications, including proposed amendments to NMAC 14.6.4 and 14.6.6 during 2026. 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 ES-3J examination. Aligned with the current New Mexico ES-3J framework, this study guide supports preparation in grounding and bonding, conductors, power conditioning, electrical and electronic fundamentals, low-voltage systems, sound and video, intrusion detection, fire alarms, computer and data systems, CCTV, testing equipment, CATV/MATV, troubleshooting, and New Mexico licensing requirements. Ideal for New Mexico low-voltage technicians, alarm-system installers, fire-alarm technicians, security-system professionals, telecommunications workers, sound and video installers, structured-cabling technicians, and candidates pursuing ES-3J journeyman certification, this resource provides focused review material, exam-style practice questions, and solution explanations to support effective licensing preparation.

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New Mexico Low Voltage Journeyman ES3J EXAM QUESTIONS
AND CORRECT VERIFIED SOLUTIONS LATEST UPDATE THIS
YEAR – JUST RELEASED
New Mexico Low Voltage Journeyman ES3J Exam Guide & Practice Questions
10-Line Exam Coverage in Points Form
1. Licensing & Regulations – New Mexico Construction Industries Division (CID)
administers licensing; ES3J license covers sound, intercommunication, alarm systems,
and systems 50 volts and under ; reciprocity exists with AK, AR, CO, ID, MT, NE, OK, SD,
TX, and WY for journeyman certificates ; license valid for 3 years ; 16 hours continuing
education required per renewal cycle (8 hours code changes, 8 hours industry-related) ;
examination services provided by PSI .
2. NEC Code Requirements – Exam based on 2020 NEC; grounding and bonding
requirements (NEC Articles 250, 800); cable installation in plenums (NEC 300-34);
working space requirements (48 inches minimum); conduit fill calculations (40% fill with
three conductors) ; Class 1, 2, and 3 circuit distinctions (NEC 725) .
3. Fire Alarm Systems – NFPA 72 governs fire alarm installation, testing, and maintenance ;
power-limited fire alarm circuits (PLFA) distinctions ; notification appliance
synchronization (strobes flash 1-2 flashes per second simultaneously) ; heat detector
spacing (50 feet within family units) ; smoke detector requirements ; firestopping for
fire-rated assemblies .
4. Communications & Low-Voltage Cabling – NEC 800 covers communications circuits;
cable voltage rating minimum 300 volts ; Cat6 T568B wiring standard; minimum
separation 6 feet between communication cables and lighting conductors ;
communications box grounding conductor minimum 14 AWG ; antenna grounding
conductor minimum 10 AWG ; optical fiber cables under 50 feet from point of entry not
required to be listed .
5. Grounding & Bonding – Green wire function in manufactured homes ; grounding
provides safe path for fault current and prevents shock ; bonding conductors must be
appropriately sized and corrosion-resistant ; Ufer ground (concrete-encased electrode) ;
minimum grounding rod length for under 50 volts ; gas pipe not acceptable as ground
electrode .
6. Power Calculations & Circuit Protection – Ohm's law applications (V = I × R); power
formula (P = V × I); Class 1 power-limited circuit maximum 1000 VA; Class 2 circuit
maximum ampacity for 18 AWG copper: 5 amps ; transformer overcurrent protection
sizing (250% for same input/output voltage) ; continuous load definition (3 hours or
more) .

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7. Installation & Wiring Methods – Minimum clearance to edge of wood stud for wire
hole: 1 ¼ inches ; separation between Class 1 and Class 2/3 circuits: ¼ inch ; warning
tape 12 inches above conduit buried 18 inches below grade ; cable support intervals ;
pull boxes for splices and cable pulling .
8. Special Systems & Equipment – CCTV systems, access control, intercom; PoE (Power
over Ethernet) applications – IEEE 802.3af delivers 15.4 W, device receives ~12.95 W ;
Class 3 circuits (30V DC, 100VA) for signaling devices ; Class 2 wiring for low-voltage
sensors ; fiber optics immune to electromagnetic interference ; rectifiers convert AC to
DC .
9. Safety & Testing – Lockout/tagout (LOTO) devices must be rated for voltage and
environment ; proper PPE for ladder work: hard hat, safety glasses, steel-toe boots ;
insulation resistance testing ; grounding electrode system resistance testing ; surge
protectors for lightning protection ; no minimum OSHA approach distance for ≤50V .
10. Exam Logistics – 50 questions, 145-minute time limit ; PSI testing format ; study
resources include NEC Code, NFPA 72, and practice exams ; minimum 70% correct
required to pass ; closed-book format ; calculator may be provided .




50 Practice Questions with Rationales




Question 1

Under New Mexico regulations, what is the maximum voltage scope for an ES-3J licensee?

A) 120V

B) 240V

C) 50V or less

D) 600V


Correct Answer: C

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Rationale: The ES-3J license in New Mexico limits the scope to systems operating at 50 volts or

less, emphasizing safety and specialization in low-voltage special systems such as sound,

intercommunication, alarm systems, and similar applications under this threshold .




Question 2

What is the minimum separation required between communication cables and lighting

conductors?

A) 2 feet

B) 4 feet

C) 6 feet

D) 8 feet


Correct Answer: C


Rationale: NEC requires a minimum separation of 6 feet between communication cables and

lighting conductors to prevent electromagnetic interference and ensure safety .




Question 3

Which NFPA standard covers the requirements for fire alarm systems?

A) NFPA 70

B) NFPA 72

, Page 4 of 132


C) NFPA 70E

D) NFPA 101


Correct Answer: B


Rationale: NFPA 72 specifies the installation, testing, and maintenance of fire alarm and

signaling systems. This is a critical reference for the ES3J exam .




Question 4

What is the minimum size grounding conductor for communications circuits?

A) 18 AWG

B) 16 AWG

C) 14 AWG

D) 10 AWG


Correct Answer: C


Rationale: NEC 830.100(A)(3) requires a minimum 14 AWG grounding conductor for

communications circuits to ensure adequate fault current capacity .




Question 5

When a cable is installed in an area above a suspended ceiling that contains completely

enclosed air ducts, what term identifies this location?

A) Plenum

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