NEW MEXICO (NM) ES-7J JOURNEYMAN TELEPHONE COMMUNICATION & TELEPHONE INTERCONNECT
SYSTEMS PRACTICE EXAM QUESTIONS AND ANSWERS ALREADY GRADED A+. 100% VERIFIED SOLUTIONS |
UPDATED PER LATEST GUIDELINES | GRADED A+...
Core Domains
New Mexico Electrical Bureau Jurisdiction and Licensing Requirements
National Electrical Code (NEC) Article 800 Communications Circuits
NEC Article 770 Optical Fiber Cables and Raceways
NEC Article 810 Radio and Television Equipment
NEC Article 820 Community Antenna and Radio Distribution Systems
Grounding and Bonding for Communications Systems
Telephone System Architecture and Key System vs. PBX
Voice over Internet Protocol (VoIP) and Digital Interconnect
Structured Cabling Standards and Installation Practices
Workplace Safety, OSHA Standards, and New Mexico Worker Protection
Introduction
This practice examination is designed to assess the comprehensive knowledge required for the New Mexico ES-7J
Journeyman Telephone Communication and Telephone Interconnect Systems certification. The exam evaluates
competencies in the installation, maintenance, and troubleshooting of modern telecommunications infrastructure,
including traditional telephone systems, VoIP, structured cabling, and fiber optics. The 100-question multiple-
choice format includes scenario-based questions that test the application of NEC articles specific to
,communications circuits as enforced in New Mexico jurisdictions. Candidates must demonstrate critical thinking in
grounding and bonding for communications, performing cable certifications, interpreting system specifications,
and applying workplace safety standards. Mastery of this material confirms the professional decision-making skills
necessary to perform at the journeyman level across telephone interconnect and network cabling environments.
SECTION ONE
Question 1
According to the New Mexico Electrical Bureau, what is the scope of work authorized under the ES-7J
journeyman classification?
A. Only high-voltage electrical distribution
B. Installation, maintenance, and repair of telephone communication and telephone interconnect systems,
including associated pathways and cabling
C. Only fire alarm system installation
D. Residential wiring for general lighting and receptacles
🟢 Correct Answer:
B
🔴 RATIONALE:
The ES-7J classification specifically authorizes work on telephone communication systems, including voice and
data interconnect cabling, key systems, PBX systems, and their associated support structures. It is distinct from
the general electrical (ES-7A) or fire alarm specialty classifications, focusing exclusively on the
telecommunications trade.
,Question 2
Under the NEC, which article specifically covers the installation requirements for telephone and twisted-pair
communications wiring within a building?
A. NEC Article 800
B. NEC Article 250
C. NEC Article 725
D. NEC Article 500
🟢 Correct Answer:
A
🔴 RATIONALE:
NEC Article 800 governs "Communications Circuits," which includes telephone wiring, twisted-pair network
cables, and other communications pathways. Article 250 covers general grounding, Article 725 covers remote-
control circuits, and Article 500 covers hazardous locations, making Article 800 the primary standard for
telephone interconnect installations.
Question 3
What is the primary purpose of the "Primary Protector" required on telephone circuits entering a building?
A. To filter noise from the voice signal
B. To limit excessive voltage and current on the circuit from external sources such as lightning or power line
crosses, protecting personnel and equipment
, C. To amplify the telephone signal for long runs
D. To convert analog signals to digital
🟢 Correct Answer:
B
🔴 RATIONALE:
NEC Article 800 requires listed primary protectors at the point of entrance for communications circuits. Their
function is to clamp voltage surges and provide a path to ground for hazardous currents, preventing damage
from lightning strikes and accidental contact with power conductors. They are not signal processors.
Question 4
When installing communications cable in a plenum air-handling space in New Mexico, which type of cable
jacket rating is REQUIRED by the NEC?
A. CM (Communications General)
B. CMR (Communications Riser)
C. CMP (Communications Plenum)
D. CMX (Communications Residential)
🟢 Correct Answer:
C
🔴 RATIONALE:
Plenum spaces require cable with low smoke and flame spread characteristics. CMP-rated cable uses materials
such as FEP that do not emit large quantities of toxic smoke. Using CM or CMR cable in a plenum is an NEC
SYSTEMS PRACTICE EXAM QUESTIONS AND ANSWERS ALREADY GRADED A+. 100% VERIFIED SOLUTIONS |
UPDATED PER LATEST GUIDELINES | GRADED A+...
Core Domains
New Mexico Electrical Bureau Jurisdiction and Licensing Requirements
National Electrical Code (NEC) Article 800 Communications Circuits
NEC Article 770 Optical Fiber Cables and Raceways
NEC Article 810 Radio and Television Equipment
NEC Article 820 Community Antenna and Radio Distribution Systems
Grounding and Bonding for Communications Systems
Telephone System Architecture and Key System vs. PBX
Voice over Internet Protocol (VoIP) and Digital Interconnect
Structured Cabling Standards and Installation Practices
Workplace Safety, OSHA Standards, and New Mexico Worker Protection
Introduction
This practice examination is designed to assess the comprehensive knowledge required for the New Mexico ES-7J
Journeyman Telephone Communication and Telephone Interconnect Systems certification. The exam evaluates
competencies in the installation, maintenance, and troubleshooting of modern telecommunications infrastructure,
including traditional telephone systems, VoIP, structured cabling, and fiber optics. The 100-question multiple-
choice format includes scenario-based questions that test the application of NEC articles specific to
,communications circuits as enforced in New Mexico jurisdictions. Candidates must demonstrate critical thinking in
grounding and bonding for communications, performing cable certifications, interpreting system specifications,
and applying workplace safety standards. Mastery of this material confirms the professional decision-making skills
necessary to perform at the journeyman level across telephone interconnect and network cabling environments.
SECTION ONE
Question 1
According to the New Mexico Electrical Bureau, what is the scope of work authorized under the ES-7J
journeyman classification?
A. Only high-voltage electrical distribution
B. Installation, maintenance, and repair of telephone communication and telephone interconnect systems,
including associated pathways and cabling
C. Only fire alarm system installation
D. Residential wiring for general lighting and receptacles
🟢 Correct Answer:
B
🔴 RATIONALE:
The ES-7J classification specifically authorizes work on telephone communication systems, including voice and
data interconnect cabling, key systems, PBX systems, and their associated support structures. It is distinct from
the general electrical (ES-7A) or fire alarm specialty classifications, focusing exclusively on the
telecommunications trade.
,Question 2
Under the NEC, which article specifically covers the installation requirements for telephone and twisted-pair
communications wiring within a building?
A. NEC Article 800
B. NEC Article 250
C. NEC Article 725
D. NEC Article 500
🟢 Correct Answer:
A
🔴 RATIONALE:
NEC Article 800 governs "Communications Circuits," which includes telephone wiring, twisted-pair network
cables, and other communications pathways. Article 250 covers general grounding, Article 725 covers remote-
control circuits, and Article 500 covers hazardous locations, making Article 800 the primary standard for
telephone interconnect installations.
Question 3
What is the primary purpose of the "Primary Protector" required on telephone circuits entering a building?
A. To filter noise from the voice signal
B. To limit excessive voltage and current on the circuit from external sources such as lightning or power line
crosses, protecting personnel and equipment
, C. To amplify the telephone signal for long runs
D. To convert analog signals to digital
🟢 Correct Answer:
B
🔴 RATIONALE:
NEC Article 800 requires listed primary protectors at the point of entrance for communications circuits. Their
function is to clamp voltage surges and provide a path to ground for hazardous currents, preventing damage
from lightning strikes and accidental contact with power conductors. They are not signal processors.
Question 4
When installing communications cable in a plenum air-handling space in New Mexico, which type of cable
jacket rating is REQUIRED by the NEC?
A. CM (Communications General)
B. CMR (Communications Riser)
C. CMP (Communications Plenum)
D. CMX (Communications Residential)
🟢 Correct Answer:
C
🔴 RATIONALE:
Plenum spaces require cable with low smoke and flame spread characteristics. CMP-rated cable uses materials
such as FEP that do not emit large quantities of toxic smoke. Using CM or CMR cable in a plenum is an NEC
