Certification: New Jersey Commercial Plumbing Inspector
Exam ID: N2
50 multiple-choice questions
Open book
2-hour time limit
Content
Outline: A detailed outline of the subject matter
covered by the exam, including the percentage of questions
from each content area and task.
1. General Requirements
Verify that all piping systems are protected as
required from corrosion, stress and strain, freezing,
and physical damage, to include building components.
Inspect all piping systems for proper installation,
support, sleeving, penetrations (fire, structural,
etc) and waterproofing of exterior openings. Verify
that all required tests of installed piping systems
are conducted.
15%
2. Fixtures
Verify proper installation of fixtures including
waste receptors, appliances and appurtenances. Inspect
for maximum and minimum flow rates and temperature
control valves. Inspect for proper installation
of faucets, fixtures and fittings.
3%
3. Water Heaters
Verify proper use and installation of materials
including proper clearances, locations, protection,
and seismic restraint. Inspect for required valves,
T&P valve and discharge piping installation,
thermal expansion requirements. Inspect for proper
size of fuel gas piping, combustion air requirements
and required venting.
12%
4. Water Supply and
Distribution
Verify proper piping material, joints and connections.
Inspect the service and distribution piping for
proper installation of cold and hot water delivery
including minimum and maximum pressure and volume
requirements, identification, sizing, valves, insulation.
Inspect the potable water supply and distribution
piping for proper protection against contamination.
Inspect installation of water treatment systems.
18%
5. Sanitary Drainage
Verify proper material, sizing and installation
of the building drain, building sewer, branches
and stacks. Inspect for the proper installation
of backwater valves, sumps, ejectors and required
cleanouts. Inspect indirect waste systems for air
breaks, air gaps, interceptors, condensate drains,
pumps and tanks.
19%
6. Vents
Verify proper sizing and venting requirements, methods
and installation.
11%
7. Traps, Interceptors,
Separators, Special Piping and Storage Systems
Verify proper use, installation and connection of
traps, interceptors and separators. Inspect chemical
treatment, high-temperature and neutralization systems.
10%
8. Storm Drainage
Verify that roof drains, conductors and leaders
comply with code provisions for proper use of materials,
sizing and installation. Inspect sub-soil and building
sub-drains, sumps and pumping systems.
4%
9. Health Care Plumbing
Verify proper installation of fixtures including
accessibility, waste receptors, appliances and
appurtenances including clearances, access and
sealing. Inspect the service and distribution
piping for proper installation of cold and hot
water delivery, identification, sizing, valves,
insulation and safety requirements. Inspect the
potable water supply and distribution piping for
proper protection against contamination.
