New Mexico (NM) LP-5 Installation, Service &
Repair Practice Exam 400 Questions with Verified
Answers & Detailed Rationales (2026/2027)
Exam Focus: NM LP-5 Installation, Service & Repair Certification | Format: Multiple
Choice | Content: Based on NMAC 19.15.40, NFPA 54 (National Fuel Gas Code), NFPA 58
(Liquefied Petroleum Gas Code), and NM RLD LP-Gas Bureau Standards | Administered
by: PSI | Updated: 2026-2027
Exam Blueprint & Weighting
Domain Weight Approx. Questions
NM Regulations, Licensing & Scope 10% 40
LP Gas Properties & Fundamentals 10% 40
Container & Tank Specifications 12% 48
Piping System Design, Installation & Testing 15% 60
Regulators & Valves 12% 48
Appliance Installation, Venting & Combustion 15% 60
Safety Procedures, Leak Detection & Emergency Response 12% 48
Service, Repair & Troubleshooting 8% 32
Electrical & Controls (LP-5 Scope) 6% 24
SECTION 1: NM REGULATIONS, LICENSING & SCOPE (Questions 1-40)
,Question 1
Under New Mexico Regulation and Licensing Department (RLD), what is the primary
scope of work authorized by an LP-5 license?
A) Residential electrical wiring up to 200A
B) Installation and repair of appliances, equipment, and piping for use with LP gas in
residences and commercial buildings
C) Journeyman electrician work for low voltage systems
D) HVAC ductwork and hydronic piping systems
Correct Answer: B) Installation and repair of appliances, equipment, and piping for
use with LP gas in residences and commercial buildings
Rationale: An LP-5 license specifically authorizes the installation, service, and repair of
appliances, equipment, and piping for LP gas use in residential and commercial buildings,
including mobile homes and RVs. The scope does NOT include HVAC ductwork or
hydronic piping systems.
Question 2
Which New Mexico statute defines the qualifications required for an LP-5 contractor?
A) NMSA 1978, Chapter 60, Article 6
B) NMSA 1978, Chapter 53, Article 7
C) NMSA 1978, Chapter 60, Article 7
D) NMSA 1978, Chapter 53, Article 6
Correct Answer: C) NMSA 1978, Chapter 60, Article 7
Rationale: Chapter 60, Article 7 of the New Mexico Statutes outlines the licensing
requirements for LP-5 contractors, including experience, bonding, and insurance.
Question 3
Which New Mexico regulation specifically defines the license classifications and fees for
LP-gas work?
,A) NMAC 14.10
B) NMAC 14.9.5
C) NMAC 19.15.40
D) NMAC 14.7.7
Correct Answer: C) NMAC 19.15.40
Rationale: The New Mexico Administrative Code, Title 19, Chapter 15, Part 40 specifically
addresses the New Mexico Liquefied Petroleum Gas Standard, including license
classifications and fees.
Question 4
According to NMAC 19.15.40.15(D), an LP-5 licensee is authorized to do all of the
following EXCEPT:
A) Install or erect liquid transfer facilities
B) Install or repair piping and equipment attached to cargo containers
C) Install, service, and repair appliances, equipment, and piping for use with LP gas
D) Install HVAC ductwork or hydronic piping systems connected to appliances
Correct Answer: D) Install HVAC ductwork or hydronic piping systems connected
to appliances
Rationale: The scope of work for an LP-5 licensee explicitly does not include the HVAC
ductwork or hydronic piping systems connected to any appliance. Those specialties fall
under mechanical license classifications.
Question 5
Which New Mexico administrative code governs the LP-5 license?
A) NMAC Title 14, Chapter 10
B) NMAC Title 19, Chapter 15, Part 40
C) NMAC Title 14, Chapter 11
D) NMAC Title 16, Chapter 1
Correct Answer: B) NMAC Title 19, Chapter 15, Part 40
, Rationale: Title 19 - Natural Resources and Wildlife, Chapter 15 - Oil and Gas, Part 40
specifically addresses the New Mexico Liquefied Petroleum Gas Standard, where the LP-5
license is defined.
Question 6
An LP-5 license holder must renew their license every:
A) 1 year
B) 2 years
C) 3 years
D) 5 years
Correct Answer: A) 1 year
Rationale: LP-gas licenses in New Mexico are annual licenses requiring renewal each year.
Question 7
What is the annual license fee for an LP-5 installation, service and repair license?
A) $35.00
B) $65.00
C) $125.00
D) $250.00
Correct Answer: C) $125.00
Rationale: The annual fee for an LP-5 license is $125.00 per NMAC 19.15.40.15(D).
Question 8
Which national standard is incorporated by reference for LP-gas installations in New
Mexico?
A) OSHA 1910.119
B) NFPA 58
Repair Practice Exam 400 Questions with Verified
Answers & Detailed Rationales (2026/2027)
Exam Focus: NM LP-5 Installation, Service & Repair Certification | Format: Multiple
Choice | Content: Based on NMAC 19.15.40, NFPA 54 (National Fuel Gas Code), NFPA 58
(Liquefied Petroleum Gas Code), and NM RLD LP-Gas Bureau Standards | Administered
by: PSI | Updated: 2026-2027
Exam Blueprint & Weighting
Domain Weight Approx. Questions
NM Regulations, Licensing & Scope 10% 40
LP Gas Properties & Fundamentals 10% 40
Container & Tank Specifications 12% 48
Piping System Design, Installation & Testing 15% 60
Regulators & Valves 12% 48
Appliance Installation, Venting & Combustion 15% 60
Safety Procedures, Leak Detection & Emergency Response 12% 48
Service, Repair & Troubleshooting 8% 32
Electrical & Controls (LP-5 Scope) 6% 24
SECTION 1: NM REGULATIONS, LICENSING & SCOPE (Questions 1-40)
,Question 1
Under New Mexico Regulation and Licensing Department (RLD), what is the primary
scope of work authorized by an LP-5 license?
A) Residential electrical wiring up to 200A
B) Installation and repair of appliances, equipment, and piping for use with LP gas in
residences and commercial buildings
C) Journeyman electrician work for low voltage systems
D) HVAC ductwork and hydronic piping systems
Correct Answer: B) Installation and repair of appliances, equipment, and piping for
use with LP gas in residences and commercial buildings
Rationale: An LP-5 license specifically authorizes the installation, service, and repair of
appliances, equipment, and piping for LP gas use in residential and commercial buildings,
including mobile homes and RVs. The scope does NOT include HVAC ductwork or
hydronic piping systems.
Question 2
Which New Mexico statute defines the qualifications required for an LP-5 contractor?
A) NMSA 1978, Chapter 60, Article 6
B) NMSA 1978, Chapter 53, Article 7
C) NMSA 1978, Chapter 60, Article 7
D) NMSA 1978, Chapter 53, Article 6
Correct Answer: C) NMSA 1978, Chapter 60, Article 7
Rationale: Chapter 60, Article 7 of the New Mexico Statutes outlines the licensing
requirements for LP-5 contractors, including experience, bonding, and insurance.
Question 3
Which New Mexico regulation specifically defines the license classifications and fees for
LP-gas work?
,A) NMAC 14.10
B) NMAC 14.9.5
C) NMAC 19.15.40
D) NMAC 14.7.7
Correct Answer: C) NMAC 19.15.40
Rationale: The New Mexico Administrative Code, Title 19, Chapter 15, Part 40 specifically
addresses the New Mexico Liquefied Petroleum Gas Standard, including license
classifications and fees.
Question 4
According to NMAC 19.15.40.15(D), an LP-5 licensee is authorized to do all of the
following EXCEPT:
A) Install or erect liquid transfer facilities
B) Install or repair piping and equipment attached to cargo containers
C) Install, service, and repair appliances, equipment, and piping for use with LP gas
D) Install HVAC ductwork or hydronic piping systems connected to appliances
Correct Answer: D) Install HVAC ductwork or hydronic piping systems connected
to appliances
Rationale: The scope of work for an LP-5 licensee explicitly does not include the HVAC
ductwork or hydronic piping systems connected to any appliance. Those specialties fall
under mechanical license classifications.
Question 5
Which New Mexico administrative code governs the LP-5 license?
A) NMAC Title 14, Chapter 10
B) NMAC Title 19, Chapter 15, Part 40
C) NMAC Title 14, Chapter 11
D) NMAC Title 16, Chapter 1
Correct Answer: B) NMAC Title 19, Chapter 15, Part 40
, Rationale: Title 19 - Natural Resources and Wildlife, Chapter 15 - Oil and Gas, Part 40
specifically addresses the New Mexico Liquefied Petroleum Gas Standard, where the LP-5
license is defined.
Question 6
An LP-5 license holder must renew their license every:
A) 1 year
B) 2 years
C) 3 years
D) 5 years
Correct Answer: A) 1 year
Rationale: LP-gas licenses in New Mexico are annual licenses requiring renewal each year.
Question 7
What is the annual license fee for an LP-5 installation, service and repair license?
A) $35.00
B) $65.00
C) $125.00
D) $250.00
Correct Answer: C) $125.00
Rationale: The annual fee for an LP-5 license is $125.00 per NMAC 19.15.40.15(D).
Question 8
Which national standard is incorporated by reference for LP-gas installations in New
Mexico?
A) OSHA 1910.119
B) NFPA 58
