NCCER PLUMBING LEVEL 1 CERTIFICATION
EXAM SCRIPT 2026 QUESTIONS WITH
CORRECT ANSWERS
◉ ABS (acrylonitrile-butadiene-sty- rene). Answer: Plastic pipe and
fittings used extensively in drain, waste, and vent (DWV) systems.
◉ ACR tubing. Answer: Annealed copper tubing that is manufactured
specifically for use in air condtioning and refrigeration work.
◉ ACR. Answer: Air conditioning and refrigeration system.
◉ ADA compliant. Answer: Follows the accessibility guidelines of the
Americans With Disabilities Act of 1990, as described in the Code of
Federal Regulations (28 CFR, Part 36, Appendix A-ADA Accessibility
Guidelines for Buildings and Facilities)
◉ Adapters. Answer: Fittings that join pipes of different sizes or
materials, such as copper and galva- nized pipe or cast-iron and plastic
pipe.
, ◉ American National Standards Institute (ANSI). Answer: A nonprofit
organization that is responsible for creating and implementing Standards
for many industries, including the construction trades
◉ Amperage. Answer: A measure of electrical current.
◉ Angle Valve. Answer: A valve whose internal design is similar to a
globe valve's but its outlet direction is 90 degrees from its inlet.
◉ Annealing. Answer: Heating a material and slowly cooling it to
relieve internal stress. This process reduces brittleness and increases
toughness.
◉ Anti-scald valve. Answer: An automatic valve connected to both cold
and hot water supplies that uses a sensor to adjust the temperature of hot
water to ensure that it does not exceed a specified temperature at the
fixture outlet.
◉ apparatus. Answer: One tool, which combines a variety of functions,
to perform a particular job.
◉ Approved submittal data: Answer: The fixtures and fittings in catalog
drawings that have been approved by the architect or engineer.
EXAM SCRIPT 2026 QUESTIONS WITH
CORRECT ANSWERS
◉ ABS (acrylonitrile-butadiene-sty- rene). Answer: Plastic pipe and
fittings used extensively in drain, waste, and vent (DWV) systems.
◉ ACR tubing. Answer: Annealed copper tubing that is manufactured
specifically for use in air condtioning and refrigeration work.
◉ ACR. Answer: Air conditioning and refrigeration system.
◉ ADA compliant. Answer: Follows the accessibility guidelines of the
Americans With Disabilities Act of 1990, as described in the Code of
Federal Regulations (28 CFR, Part 36, Appendix A-ADA Accessibility
Guidelines for Buildings and Facilities)
◉ Adapters. Answer: Fittings that join pipes of different sizes or
materials, such as copper and galva- nized pipe or cast-iron and plastic
pipe.
, ◉ American National Standards Institute (ANSI). Answer: A nonprofit
organization that is responsible for creating and implementing Standards
for many industries, including the construction trades
◉ Amperage. Answer: A measure of electrical current.
◉ Angle Valve. Answer: A valve whose internal design is similar to a
globe valve's but its outlet direction is 90 degrees from its inlet.
◉ Annealing. Answer: Heating a material and slowly cooling it to
relieve internal stress. This process reduces brittleness and increases
toughness.
◉ Anti-scald valve. Answer: An automatic valve connected to both cold
and hot water supplies that uses a sensor to adjust the temperature of hot
water to ensure that it does not exceed a specified temperature at the
fixture outlet.
◉ apparatus. Answer: One tool, which combines a variety of functions,
to perform a particular job.
◉ Approved submittal data: Answer: The fixtures and fittings in catalog
drawings that have been approved by the architect or engineer.
