ICC Master Plumber w/Gas - G27-N Exam Prep Guide

The ICC Master Plumber w/Gas - G27-N examination is designed for experienced plumbing professionals preparing to demonstrate advanced knowledge of plumbing systems, fuel-gas piping, water distribution, sanitary drainage, venting, fixtures, storm drainage, combustion air, appliance installation, system design, testing, and code-compliant supervision.

The ICC Master Plumber w/Gas - G27-N exam prep collection includes a books and courses rental package, professionally highlighted and tabbed references, flexible online exam preparation, and a standard exam book package.

This guide explains the available packages, examination details, reference books, major plumbing and gas topics, calculation subjects, code-navigation methods, and practical preparation strategies.

Available G27-N Exam Prep Packages

• ICC Master Plumber w/Gas - G27-N - Books & Courses Rental Package: $790.00 sale price, reduced from $1,090.00
• ICC Master Plumber w/Gas - G27-N Highlighted & Tabbed Book Package: $495.00 sale price, reduced from $695.00
• ICC Master Plumber w/Gas - G27-N - Online Exam Prep: $295.00 sale price, reduced from $395.00
• ICC Master Plumber w/Gas - G27-N Exam Book Package: $345.00 sale price, reduced from $445.00

The rental package combines temporary book access with structured online training. The highlighted and tabbed package supports faster navigation between plumbing and fuel-gas subjects. The online course is suitable for candidates who already own the correct references, while the exam book package supports independent preparation.

Books & Courses Rental Package

The ICC Master Plumber w/Gas - G27-N Books & Courses Rental Package combines access to the assigned plumbing and fuel-gas references with organized online exam preparation.

The package is listed at a sale price of $790.00, reduced from the regular price of $1,090.00.

This package may be appropriate for candidates who:

• Need both exam references and online preparation
• Do not currently own the approved code books
• Want an organized master plumber study plan
• Need help navigating plumbing and fuel-gas codes
• Want practice with advanced sizing calculations
• Prefer combining lessons, references, and practice questions

Candidates should review the current product listing for course access, rental periods, shipping details, deposit requirements, and return instructions.

Highlighted & Tabbed Book Package

The ICC Master Plumber w/Gas - G27-N Highlighted & Tabbed Book Package provides professionally organized references for candidates who want to begin studying without preparing every section themselves.

The package is listed at a sale price of $495.00, reduced from the regular price of $695.00.

The prepared references may help candidates locate:

• Plumbing definitions and regulations
• Fixture and water heater requirements
• Water-distribution sizing tables
• Sanitary drainage provisions
• Plumbing vent requirements
• Traps, interceptors, and storm drainage
• Fuel-gas piping and sizing tables
• Combustion-air and appliance venting requirements

Prepared books can improve navigation, but candidates must still understand how to interpret tables, definitions, exceptions, and installation requirements.

Online Exam Prep

The ICC Master Plumber w/Gas - G27-N Online Exam Prep course provides flexible, self-paced preparation for candidates who already own the correct references or plan to purchase them separately.

The course is listed at a sale price of $295.00, reduced from the regular price of $395.00.

Online preparation may help candidates:

• Review plumbing and fuel-gas subjects in a logical order
• Practice advanced water and drainage calculations
• Practice natural gas and propane pipe sizing
• Improve code-book navigation
• Review system design and plan-reading questions
• Identify weak knowledge areas
• Complete exam-style practice questions
• Study around an active work schedule

Exam Book Package

The ICC Master Plumber w/Gas - G27-N Exam Book Package provides the printed references associated with the examination for independent preparation.

The package is listed at a sale price of $345.00, reduced from the regular price of $445.00.

This package may be appropriate for candidates who:

• Prefer independent book-based study
• Want to own the exam references
• Already understand many advanced plumbing and gas subjects
• Want to create a personalized highlighting and tab system
• Already have separate training or practice questions
• Need the references for continued professional use

What Is the ICC G27-N Examination?

The G27-N examination is the ICC National Standard Master Plumber with Gas examination. Participating jurisdictions may use it as part of a master plumber, plumbing contractor, master plumber with gas, or qualifying-individual licensing process.

The examination includes 100 multiple-choice questions and has a four-hour time limit. Candidates must earn at least 70 percent to pass.

The examination is open book, subject to current ICC rules for approved references, permanent tabs, highlighting, handwritten notes, inserted materials, and book condition.

Passing G27-N does not automatically issue a plumbing or gas-fitting license. Candidates must also satisfy the experience, application, insurance, business, financial, and supervisory requirements established by the applicable licensing authority.

G27-N Exam References

The current G27-N examination information identifies two primary references:

• International Plumbing Code, 2018 Edition
• International Fuel Gas Code, 2018 Edition

The International Plumbing Code supports preparation involving fixtures, water heaters, water supply, sanitary drainage, vents, traps, interceptors, separators, storm drainage, materials, testing, and plumbing system design.

The International Fuel Gas Code supports preparation involving gas piping, sizing, valves, regulators, appliance connections, pressure testing, combustion air, chimneys, vents, and fuel-gas safety.

Candidates should confirm the approved references before scheduling because testing requirements and adopted code editions can change.

G27-N Examination Content

The current examination outline distributes questions across the following subjects:

• Administration and General Regulations: 36%
• Plumbing Fixtures: 13%
• Water Supply and Distribution: 9%
• Sanitary Drainage: 8%
• Plumbing Vent Requirements: 6%
• Traps, Interceptors, and Separators: 5%
• Storm Drainage: 2%
• Gas Piping: 21%

Administration and gas piping represent a significant portion of the examination, but candidates should prepare across the complete outline.

Confirm Local Licensing Requirements

Before purchasing materials or scheduling the examination, candidates should verify:

• Whether the licensing authority accepts G27-N
• The scope of the master plumber with gas classification
• The required plumbing and fuel-gas code editions
• The current approved reference list
• The question count, time limit, and passing score
• Rules for tabs, highlighting, and notes
• Required journeyman and supervisory experience
• Application and examination fees
• Insurance and bonding requirements
• Business or qualifying-party requirements
• License renewal requirements
• Continuing-education requirements

What Does a Master Plumber with Gas Do?

A master plumber with gas may design, install, alter, repair, inspect, test, and supervise plumbing and fuel-gas systems within the scope permitted by the applicable licensing authority.

Common responsibilities may include:

• Reviewing plans and specifications
• Designing water-distribution systems
• Sizing sanitary drainage and vent systems
• Planning storm drainage systems
• Sizing natural gas and propane piping
• Selecting valves and pressure regulators
• Reviewing combustion-air and venting systems
• Supervising journeymen and apprentices
• Coordinating permits and inspections
• Testing plumbing and gas systems
• Correcting unsafe or noncompliant installations
• Maintaining project and inspection records

Administration and General Regulations

Master plumber candidates should understand how plumbing and gas work moves through plan review, permitting, inspection, testing, correction, and final approval.

Study subjects may include:

• Permit requirements
• Construction documents
• Required inspections
• Approved materials and methods
• Alternative materials
• Protection of piping
• Equipment access
• System testing
• Unsafe conditions
• Installer and permit-holder responsibilities
• Plan reading
• Referenced standards

Plumbing Plans and System Design

Master-level candidates may need to interpret plans, riser diagrams, fixture schedules, specifications, isometric drawings, and system details.

Plan-reading subjects may include:

• Domestic water plans
• Sanitary drainage layouts
• Vent riser diagrams
• Storm drainage plans
• Gas piping diagrams
• Pipe sizes and slopes
• Fixture and equipment schedules
• Valve and regulator locations
• Developed piping lengths
• Plan symbols and abbreviations
• Specification requirements

Candidates should connect information shown on the plans with the applicable code provisions.

Plumbing Materials and Joints

Plumbing materials and joining methods must be approved for the system, pressure, temperature, environment, and installation method.

Materials may include:

• Copper and copper-alloy piping
• Cast-iron soil pipe
• Galvanized steel pipe
• PVC and CPVC piping
• ABS piping
• PEX tubing
• Stainless steel piping
• Polyethylene piping
• Approved transition fittings

Joining methods may include soldering, brazing, threading, welding, solvent cement, pressing, compression, flaring, mechanical joints, and heat fusion.

Pipe Support and Protection

Plumbing and gas piping must be supported and protected to prevent sagging, movement, corrosion, joint stress, and physical damage.

Important subjects may include:

• Horizontal support spacing
• Vertical support
• Protection through framing members
• Protective plates
• Expansion and contraction
• Protection from freezing
• Corrosion protection
• Underground bedding and backfill
• Rooftop supports
• Protection from vehicles and equipment

Plumbing Fixtures

Fixture requirements address approved products, installation, supports, clearances, water connections, drainage connections, and accessibility.

Common fixtures include:

• Water closets
• Urinals
• Lavatories
• Kitchen and service sinks
• Bathtubs and showers
• Drinking fountains
• Clothes-washing machines
• Floor drains
• Emergency fixtures
• Commercial food-service fixtures

Candidates should review fixture-unit values, minimum fixture quantities, clearances, traps, waste connections, and water-supply requirements.

Required Number of Fixtures

Questions may require candidates to determine the minimum number of fixtures for a building or occupancy.

Important considerations include:

• Occupancy classification
• Occupant load
• Male and female distribution
• Water closets and urinals
• Lavatories
• Drinking fountains
• Service sinks
• Separate-facility requirements
• Fixture substitutions
• Table notes and exceptions

Water Heaters

Water heater questions may involve installation location, capacity, temperature control, pressure protection, combustion air, venting, drainage, and accessibility.

Candidates should review:

• Temperature and pressure relief valves
• Relief discharge piping
• Drain pans
• Cold-water shutoff valves
• Thermal expansion control
• Tempering valves
• Combustion-air requirements
• Chimneys and vents
• Garage installation
• Protection from physical damage

Water Supply and Distribution

Water-distribution systems must deliver potable water at suitable flow and pressure to every required fixture and appliance.

Study subjects may include:

• Water service piping
• Water-distribution piping
• Water-supply fixture units
• Developed piping length
• Available water pressure
• Elevation pressure loss
• Friction and equipment losses
• Pressure-reducing valves
• Water hammer control
• Thermal expansion
• Hot-water distribution
• Recirculation systems

Water Pipe-Sizing Calculations

Master-level water pipe sizing may require candidates to evaluate fixture load, developed length, available pressure, elevation, meter loss, and equipment pressure loss.

A practical process includes:

• Identify the fixtures served
• Determine the water-supply fixture units
• Calculate developed piping length
• Determine available supply pressure
• Calculate elevation loss
• Account for meters, backflow devices, and other equipment
• Select the applicable sizing table
• Choose a pipe size with adequate capacity

Water Pressure and Booster Systems

Water pressure must be sufficient to operate fixtures while remaining within safe limits for piping and equipment.

Study considerations may include:

• Minimum fixture pressure
• Maximum static pressure
• Pressure-reducing valves
• Elevation loss
• Friction loss
• Booster pumps
• Pressure tanks
• Low-pressure conditions
• Water hammer
• Thermal expansion

Backflow Prevention

Backflow prevention protects potable water from contamination caused by backsiphonage or backpressure.

Candidates should review:

• Air gaps
• Atmospheric vacuum breakers
• Pressure vacuum breakers
• Reduced-pressure-principle assemblies
• Double-check assemblies
• Hose connection vacuum breakers
• Required device locations
• Degree of hazard
• Installation clearances
• Testing and accessibility

Hot-Water Distribution

Hot-water systems must provide suitable temperatures while controlling heat loss, scald hazards, and excessive pressure.

Study subjects may include:

• Hot-water pipe sizing
• Temperature limitations
• Tempering valves
• Recirculation systems
• Pipe insulation
• Dead-end lengths
• Thermal expansion
• Fixture temperature controls
• Scald protection
• Energy-conservation requirements

Sanitary Drainage Systems

Sanitary drainage systems carry wastewater from fixtures to the building sewer or another approved disposal point.

Important subjects include:

• Drainage fixture units
• Fixture drains
• Horizontal branches
• Vertical stacks
• Building drains
• Building sewers
• Pipe sizing and slope
• Changes in direction
• Cleanouts
• Sumps and ejectors
• Special waste systems
• System testing

Drainage Fixture Units and Pipe Sizing

Drainage fixture units represent the probable discharge load produced by plumbing fixtures.

Candidates may need to:

• Determine individual fixture-unit values
• Add fixture units on branches
• Calculate stack loads
• Calculate building drain loads
• Size building sewers
• Apply required slopes
• Use branch-interval limitations
• Interpret table notes and exceptions

The correct sizing table depends on whether the piping is horizontal, vertical, a stack, a building drain, or a building sewer.

Changes in Drainage Direction

Drainage fittings must direct wastewater smoothly and limit conditions that could cause blockage.

Study subjects may include:

• Horizontal-to-horizontal changes
• Vertical-to-horizontal changes
• Horizontal-to-vertical changes
• Sanitary tees
• Wyes
• Combination fittings
• Long-turn fittings
• Quarter bends
• Base-of-stack connections
• Prohibited fitting arrangements

Cleanouts

Cleanouts provide access for inspecting and clearing drainage piping.

Candidates should review:

• Required cleanout locations
• Maximum spacing
• Changes in direction
• Building drain cleanouts
• Building sewer cleanouts
• Stack cleanouts
• Cleanout size
• Required access and clearance
• Protection from physical damage

Sumps and Sewage Ejectors

Fixtures below the level of the gravity building sewer may require a sump and pumping system.

Study subjects may include:

• Sump construction
• Gas-tight covers
• Pump capacity
• Discharge piping
• Check valves
• Shutoff valves
• Vent connections
• Alarm systems
• Access for service
• Emergency power where required

Plumbing Vent Systems

Vent systems protect trap seals and allow drainage systems to operate at atmospheric pressure.

Common venting methods include:

• Individual vents
• Common vents
• Wet vents
• Circuit vents
• Stack vents
• Vent stacks
• Relief vents
• Island fixture vents
• Combination waste and vent systems
• Air admittance valves where permitted

Candidates should identify the venting method before applying sizing and connection requirements.

Vent Sizing and Trap Arms

Vent size may depend on connected drainage fixture units, developed length, and the drainage pipe served.

Trap-arm questions may involve:

• Trap-arm pipe size
• Maximum developed length
• Required slope
• Distance from the trap to the vent
• Changes in direction
• Connection to the vented drainage system
• Protection of the trap seal

Candidates should practice locating and applying vent-sizing and trap-arm tables.

Wet Venting and Circuit Venting

Wet and circuit vent systems allow specific drainage piping to provide venting when all required conditions are satisfied.

Candidates should review:

• Permitted fixture groups
• Bathroom-group arrangements
• Pipe sizing
• Fixture connection order
• Horizontal wet venting
• Vertical wet venting
• Circuit vent connections
• Relief vents
• Prohibited arrangements

Traps, Interceptors, and Separators

Fixture traps prevent sewer gases from entering occupied spaces. Interceptors and separators remove grease, oil, sand, lint, solids, and other materials from wastewater.

Study subjects may include:

• Trap-seal depth
• Trap size
• Prohibited traps
• Double trapping
• Trap primers
• Grease interceptors
• Oil separators
• Sand interceptors
• Lint and hair interceptors
• Access, venting, and maintenance

Grease Interceptors

Grease interceptors may be required for commercial kitchens and other operations that discharge fats, oils, or grease.

Study considerations may include:

• Fixtures requiring protection
• Interceptor type
• Flow rate
• Fixture capacity
• Location and accessibility
• Venting
• Flow-control devices
• Maintenance requirements
• Prohibited connections

Storm Drainage

Storm drainage systems remove rainwater from roofs and other approved surfaces.

Study subjects may include:

• Roof drainage areas
• Rainfall rates
• Roof drains
• Gutters
• Leaders and conductors
• Horizontal storm piping
• Secondary drainage
• Overflow drains
• Scuppers
• Discharge locations

Storm Drainage Calculations

Storm drainage sizing may depend on roof area, rainfall rate, pipe slope, gutter size, and conductor capacity.

Candidates should practice:

• Calculating roof drainage areas
• Dividing roofs among multiple drains
• Using rainfall-rate tables
• Sizing roof drains
• Sizing vertical conductors
• Sizing horizontal storm piping
• Evaluating overflow systems
• Sizing gutters and scuppers

Fuel-Gas System Demand

Fuel-gas piping must deliver enough gas to operate all connected appliances while maintaining the required pressure.

Connected equipment may include:

• Water heaters
• Furnaces
• Boilers
• Ranges and ovens
• Clothes dryers
• Commercial cooking equipment
• Unit heaters
• Fireplaces
• Pool heaters
• Standby generators

Candidates should calculate the demand carried by mains, branches, risers, manifolds, and individual appliance outlets.

Gas Pipe-Sizing Calculations

Gas pipe sizing may depend on fuel type, operating pressure, permitted pressure drop, piping material, specific gravity, developed length, and connected demand.

A practical sizing process includes:

• List all connected gas appliances
• Determine each appliance input rating
• Calculate the load carried by each pipe section
• Determine the applicable developed length
• Select the correct fuel, pressure, and material table
• Choose a pipe size with sufficient capacity
• Confirm regulator and appliance pressure requirements

Candidates should avoid mixing natural gas, propane, low-pressure, and elevated-pressure sizing tables.

Elevated-Pressure Gas Systems

Elevated-pressure systems may reduce pipe sizes but require appropriate regulators, identification, and overpressure protection.

Study subjects may include:

• System operating pressure
• Line pressure regulators
• Regulator capacity
• Regulator venting
• Overpressure protection
• Downstream pipe sizing
• Appliance pressure limitations
• Multiple pressure zones
• System identification
• Testing requirements

Gas Piping Materials and Joints

Gas piping materials and joining methods must be approved for the fuel, pressure, location, and environmental conditions.

Possible materials and methods include:

• Steel pipe and threaded joints
• Welded steel piping
• Copper-alloy tubing where permitted
• Corrugated stainless steel tubing
• Polyethylene underground piping
• Flared connections
• Mechanical fittings
• Heat-fusion joints
• Listed transition fittings

Gas Valves and Regulators

Valves and regulators control gas flow and protect downstream systems from improper pressure.

Candidates should review:

• Building shutoff valves
• Branch shutoff valves
• Appliance shutoff valves
• Emergency shutoff valves
• Service regulators
• Line pressure regulators
• Appliance regulators
• Regulator venting
• Overpressure protection
• Appliance connectors
• Sediment traps

Gas Piping Pressure Testing

New and altered gas piping must be tested before concealment or operation.

Important preparation topics include:

• Approved test media
• Test pressure
• Test duration
• Gauge range and accuracy
• Isolation of appliances and regulators
• Inspection of exposed joints
• Repair and retesting
• Approved leak-detection methods
• Pressure-test safety

Open flames should never be used to locate gas leaks, and oxygen should not be used as a gas piping pressure-test medium.

Purging Gas Piping

Purging removes air from new gas piping or removes fuel gas from piping being taken out of service.

Study considerations may include:

• System volume
• Pipe size
• Fuel type
• Purging location
• Ventilation
• Control of ignition sources
• Combustible gas monitoring
• Use of inert gas where required
• Placing appliances into operation

Combustion Air

Fuel-burning appliances require sufficient air for combustion, dilution, and ventilation.

Combustion-air requirements may depend on:

• Total appliance input
• Room volume
• Building construction
• Indoor openings
• Outdoor openings
• Horizontal or vertical ducts
• Mechanical combustion air
• Louver and grille free area
• Competing exhaust systems
• Appliance type

Candidates should identify the combustion-air method before calculating required openings or mechanical airflow.

Chimneys and Vents

Chimneys and vents carry combustion products safely outdoors.

Important study subjects include:

• Masonry chimneys
• Factory-built chimneys
• Type B gas vents
• Special gas vents
• Vent connectors
• Common venting
• Vent sizing
• Connector slope and support
• Clearance to combustible materials
• Vent termination
• Condensing appliances
• Manufacturer instructions

Gas-Fired Appliances

For each gas-fired appliance, candidates should review:

• Appliance input rating
• Shutoff valves
• Pressure regulators
• Appliance connectors
• Sediment traps
• Combustion-air requirements
• Chimney or vent requirements
• Clearances
• Service access
• Manufacturer instructions

Master plumber candidates should be comfortable evaluating residential and commercial gas-fired equipment.

Plumbing and Gas System Testing

Plumbing and fuel-gas systems may require inspection and testing before concealment or operation.

Study areas may include:

• Water piping pressure tests
• Drainage and vent tests
• Water and air tests
• Gas piping pressure tests
• Approved test equipment
• Test pressure and duration
• Leak inspection
• Repair and retesting
• Inspection documentation
• Final system approval

Supervision and Quality Control

A master plumber may be responsible for supervising field personnel and confirming that installations match approved plans and code requirements.

Quality-control checks may include:

• Correct pipe sizing
• Approved materials and fittings
• Proper support and protection
• Fixture and equipment clearances
• Drainage pipe slopes
• Vent connections
• Backflow protection
• Gas regulator and valve installation
• Combustion-air openings
• Pressure-test results
• Required permits and inspections

Plumbing and Gas Safety

Plumbing and gas-fitting work may involve excavations, pressurized systems, combustible fuel, hot work, confined spaces, ladders, and power tools.

Important safety subjects include:

• Personal protective equipment
• Trenching and excavation safety
• Confined-space awareness
• Hot-work precautions
• Pressure-test safety
• Lockout and tagout
• Control of ignition sources
• Combustible gas monitoring
• Carbon monoxide awareness
• Emergency gas-leak response
• Protection of occupants and property

Code-Book Navigation

An open-book examination still requires fast and accurate navigation. Candidates must know which reference applies before searching for an answer.

A practical lookup method includes:

• Read the complete question
• Identify whether the subject is plumbing or fuel gas
• Select the International Plumbing Code or International Fuel Gas Code
• Use the index or table of contents
• Locate the complete section, table, or figure
• Review definitions, footnotes, and exceptions
• Confirm that the requirement applies to the stated system
• Record difficult topics for additional practice

Organizing the G27-N References

A practical tab system may include:

• IPC definitions and regulations
• IPC fixtures and water heaters
• IPC water supply
• IPC sanitary drainage
• IPC venting
• IPC traps and interceptors
• IPC storm drainage
• IFGC general regulations
• IFGC gas piping
• IFGC sizing tables
• IFGC valves and regulators
• IFGC pressure testing
• IFGC combustion air
• IFGC chimneys and vents
• IFGC appliances

Candidates should verify current ICC rules before adding tabs, highlighting, notes, or other book modifications.

Recommended Study Plan

• Review exam rules and reference organization
• Study administration and plan reading
• Review fixtures and water heaters
• Practice water-distribution calculations
• Study backflow prevention
• Practice sanitary drainage sizing
• Review vent types and vent sizing
• Study traps, interceptors, and storm drainage
• Practice natural gas and propane pipe sizing
• Review elevated-pressure gas systems
• Study valves, regulators, testing, and purging
• Practice combustion-air calculations
• Review chimneys, vents, and appliances
• Complete timed code-navigation exercises
• Review every missed practice question

Which G27-N Package Should You Choose?

• Choose the Books & Courses Rental Package for temporary access to both references and structured online preparation.
• Choose the Highlighted & Tabbed Book Package for professionally organized plumbing and fuel-gas references.
• Choose Online Exam Prep when you already own the correct books and want guided study.
• Choose the Exam Book Package for independent preparation and permanent book ownership.

FAQ

Q. What is the ICC Master Plumber w/Gas - G27-N exam?

A. It is an ICC Contractor and Trades examination used by participating jurisdictions to evaluate master-level plumbing, fuel-gas, system-design, code-navigation, and supervisory knowledge.

Q. How much does the Books & Courses Rental Package cost?

A. The sale price is $790.00, reduced from the regular price of $1,090.00.

Q. How much does the Highlighted & Tabbed Book Package cost?

A. The sale price is $495.00, reduced from the regular price of $695.00.

Q. How much does Online Exam Prep cost?

A. The sale price is $295.00, reduced from the regular price of $395.00.

Q. How much does the Exam Book Package cost?

A. The sale price is $345.00, reduced from the regular price of $445.00.

Q. What books are used for G27-N?

A. The current references are the 2018 International Plumbing Code and 2018 International Fuel Gas Code.

Q. How many questions are on the G27-N examination?

A. The examination currently includes 100 multiple-choice questions.

Q. How much time is allowed?

A. Candidates currently have four hours to complete the examination.

Q. What score is required to pass?

A. Candidates must currently answer at least 70 percent of the questions correctly.

Q. Is the G27-N examination open book?

A. Yes. Candidates may use approved references subject to current ICC testing rules.

Q. What subjects should I study?

A. Study regulations, fixtures, water supply, sanitary drainage, vents, traps, storm drainage, gas piping, regulators, testing, combustion air, venting, appliances, and plan review.

Q. Should I practice both water and gas pipe-sizing calculations?

A. Yes. Master-level preparation should include water distribution, drainage, venting, natural gas, propane, and elevated-pressure gas systems.

Q. Should I study plan reading?

A. Yes. Candidates should practice water, drainage, vent, storm, and gas piping plans, riser diagrams, isometrics, and equipment schedules.

Q. Does passing G27-N automatically issue a master plumber license?

A. No. The applicable licensing authority controls experience, applications, insurance, business requirements, fees, and final approval.

Q. Where can I purchase the G27-N packages?

A. The available options can be found in the ICC Master Plumber w/Gas - G27-N exam prep collection.

Conclusion

The ICC Master Plumber w/Gas - G27-N examination requires candidates to combine advanced plumbing experience with fuel-gas knowledge, system-design ability, calculations, reference navigation, and supervisory understanding.

Important preparation subjects include fixtures, water supply, sanitary drainage, venting, traps, storm drainage, gas piping, regulators, pressure testing, combustion air, appliance venting, plan review, and quality control.

1 Exam Prep offers a Books & Courses Rental Package, Highlighted & Tabbed Book Package, Online Exam Prep, and Exam Book Package for different preparation needs and budgets.

Shop ICC Master Plumber w/Gas - G27-N Exam Prep

Key Takeaways

• G27-N is the ICC National Standard Master Plumber with Gas examination.
• The Books & Courses Rental Package sale price is $790.00.
• The Highlighted & Tabbed Book Package sale price is $495.00.
• The Online Exam Prep sale price is $295.00.
• The Exam Book Package sale price is $345.00.
• The examination currently includes 100 questions and a four-hour limit.
• The passing requirement is 70 percent.
• The examination is open book under current testing rules.
• The references are the 2018 International Plumbing Code and 2018 International Fuel Gas Code.
• The exam combines advanced plumbing, drainage, venting, water-supply, and fuel-gas subjects.
• Passing G27-N does not automatically issue a master plumber license.
• Candidates should verify current examination and jurisdictional requirements before registering.