New Mexico ER-1J Journeyman Residential Electrical Wiring Exam QUESTIONS AND
CORRECT ANSWERS WITH RATIONALES
Exam coverage
• residential services
• branch circuits
• grounding
• bonding
• boxes
• cables
• receptacles
• lighting
• residential equipment
• inspection and safety
,1. When reviewing this equipment, which statement best applies because Residential
services supply electrical power to dwelling loads and require suitable service
equipment and protection.. Which answer best applies to the underlying ER-1J
residential wiring concept in this situation?
A. Boxes must be sized, accessible where required, supported, and suitable for their contents
and connections..
B. Residential services supply electrical power to dwelling loads and require suitable service
equipment and protection..
C. Grounding and bonding provide intended fault-current paths and reference connections..
D. Branch circuits supply individual loads and require conductors and protection appropriate to
the circuit..
Correct answer: B
Rationale: The correct choice directly states the governing principle: Residential services
supply electrical power to dwelling loads and require suitable service equipment and
protection.. The alternatives address related topics but do not directly answer the issue being
tested.
2. A supervisor asks which practice should guide the work when Branch circuits supply
individual loads and require conductors and protection appropriate to the circuit..
Which answer best applies to the underlying ER-1J residential wiring concept in this
situation?
,A. Boxes must be sized, accessible where required, supported, and suitable for their contents
and connections..
B. Grounding and bonding provide intended fault-current paths and reference connections..
C. Cable and conductor routing must protect wiring from physical damage and maintain
required support..
D. Branch circuits supply individual loads and require conductors and protection appropriate to
the circuit..
Correct answer: D
Rationale: The correct choice directly states the governing principle: Branch circuits supply
individual loads and require conductors and protection appropriate to the circuit.. The
alternatives address related topics but do not directly answer the issue being tested.
3. Which explanation best connects the technical requirement with its practical purpose
when Grounding and bonding provide intended fault-current paths and reference
connections.. Which answer best applies to the underlying ER-1J residential wiring
concept in this situation?
A. Boxes must be sized, accessible where required, supported, and suitable for their contents
and connections..
B. Receptacles must be installed with appropriate ratings, locations, protection, and
connections..
C. Grounding and bonding provide intended fault-current paths and reference connections..
, D. Cable and conductor routing must protect wiring from physical damage and maintain
required support..
Correct answer: C
Rationale: The correct choice directly states the governing principle: Grounding and bonding
provide intended fault-current paths and reference connections.. The alternatives address
related topics but do not directly answer the issue being tested.
4. An inspection reveals this condition; which action is supported by the principle that
Boxes must be sized, accessible where required, supported, and suitable for their
contents and connections.. Which answer best applies to the underlying ER-1J
residential wiring concept in this situation?
A. Cable and conductor routing must protect wiring from physical damage and maintain
required support..
B. Boxes must be sized, accessible where required, supported, and suitable for their contents
and connections..
C. Lighting circuits require suitable wiring, boxes, controls, and fixtures..
D. Receptacles must be installed with appropriate ratings, locations, protection, and
connections..
Correct answer: B
Rationale: The correct choice directly states the governing principle: Boxes must be sized,
accessible where required, supported, and suitable for their contents and connections.. The
CORRECT ANSWERS WITH RATIONALES
Exam coverage
• residential services
• branch circuits
• grounding
• bonding
• boxes
• cables
• receptacles
• lighting
• residential equipment
• inspection and safety
,1. When reviewing this equipment, which statement best applies because Residential
services supply electrical power to dwelling loads and require suitable service
equipment and protection.. Which answer best applies to the underlying ER-1J
residential wiring concept in this situation?
A. Boxes must be sized, accessible where required, supported, and suitable for their contents
and connections..
B. Residential services supply electrical power to dwelling loads and require suitable service
equipment and protection..
C. Grounding and bonding provide intended fault-current paths and reference connections..
D. Branch circuits supply individual loads and require conductors and protection appropriate to
the circuit..
Correct answer: B
Rationale: The correct choice directly states the governing principle: Residential services
supply electrical power to dwelling loads and require suitable service equipment and
protection.. The alternatives address related topics but do not directly answer the issue being
tested.
2. A supervisor asks which practice should guide the work when Branch circuits supply
individual loads and require conductors and protection appropriate to the circuit..
Which answer best applies to the underlying ER-1J residential wiring concept in this
situation?
,A. Boxes must be sized, accessible where required, supported, and suitable for their contents
and connections..
B. Grounding and bonding provide intended fault-current paths and reference connections..
C. Cable and conductor routing must protect wiring from physical damage and maintain
required support..
D. Branch circuits supply individual loads and require conductors and protection appropriate to
the circuit..
Correct answer: D
Rationale: The correct choice directly states the governing principle: Branch circuits supply
individual loads and require conductors and protection appropriate to the circuit.. The
alternatives address related topics but do not directly answer the issue being tested.
3. Which explanation best connects the technical requirement with its practical purpose
when Grounding and bonding provide intended fault-current paths and reference
connections.. Which answer best applies to the underlying ER-1J residential wiring
concept in this situation?
A. Boxes must be sized, accessible where required, supported, and suitable for their contents
and connections..
B. Receptacles must be installed with appropriate ratings, locations, protection, and
connections..
C. Grounding and bonding provide intended fault-current paths and reference connections..
, D. Cable and conductor routing must protect wiring from physical damage and maintain
required support..
Correct answer: C
Rationale: The correct choice directly states the governing principle: Grounding and bonding
provide intended fault-current paths and reference connections.. The alternatives address
related topics but do not directly answer the issue being tested.
4. An inspection reveals this condition; which action is supported by the principle that
Boxes must be sized, accessible where required, supported, and suitable for their
contents and connections.. Which answer best applies to the underlying ER-1J
residential wiring concept in this situation?
A. Cable and conductor routing must protect wiring from physical damage and maintain
required support..
B. Boxes must be sized, accessible where required, supported, and suitable for their contents
and connections..
C. Lighting circuits require suitable wiring, boxes, controls, and fixtures..
D. Receptacles must be installed with appropriate ratings, locations, protection, and
connections..
Correct answer: B
Rationale: The correct choice directly states the governing principle: Boxes must be sized,
accessible where required, supported, and suitable for their contents and connections.. The
