MASTER PLUMBER CERTIFICATION
TEST 2026 COMPLETE QUESTIONS
AND VERIFIED ANSWERS
◉ T&P Valves must be installed in the top? Answer: 6" of tank
◉ Are T&P valves required on all water heater weather gas or electric?
Answer: Yes
◉ What is the Maximum Temperature on a T&P valve? Answer: 210
degrees F
◉ T&P discharge piping must be rated for what? Answer: Hot Water
(CPVC and Copper)
◉ T&P discharge piping must terminate how far above ground?
Answer: 6"
◉ T&P discharge piping must fall to the? Answer: Outside of the
building not the water heater pan
◉ T&P discharge piping must not be? Answer: Trapped
◉ T&P discharge piping must be? Answer: Full size minimum of 3/4"
, ◉ If water heaters are installed in a garage or a room that opens to a
garage or a store room in must be? Answer: 18" above the floor
◉ Can a water heater be installed in a bedroom, bathroom, or clothes
closet? Answer: No
◉ Where can you find the side wall clearance and working pressure?
Answer: On the water heater label
◉ Where can you find the water heaters wattage? Answer: On the water
heater label
◉ Gas water heaters must have combustion air where? Answer: 12"
from the top and 12" from the floor
◉ If a water heater is installed in the attic it must have? Answer: 24"
access to the heater
◉ Water Heater Cold water supply line must have? Answer: A full port
shut off valve
◉ Can you hard pipe the Supply and Outlet directly to the heater?
Answer: Yes
TEST 2026 COMPLETE QUESTIONS
AND VERIFIED ANSWERS
◉ T&P Valves must be installed in the top? Answer: 6" of tank
◉ Are T&P valves required on all water heater weather gas or electric?
Answer: Yes
◉ What is the Maximum Temperature on a T&P valve? Answer: 210
degrees F
◉ T&P discharge piping must be rated for what? Answer: Hot Water
(CPVC and Copper)
◉ T&P discharge piping must terminate how far above ground?
Answer: 6"
◉ T&P discharge piping must fall to the? Answer: Outside of the
building not the water heater pan
◉ T&P discharge piping must not be? Answer: Trapped
◉ T&P discharge piping must be? Answer: Full size minimum of 3/4"
, ◉ If water heaters are installed in a garage or a room that opens to a
garage or a store room in must be? Answer: 18" above the floor
◉ Can a water heater be installed in a bedroom, bathroom, or clothes
closet? Answer: No
◉ Where can you find the side wall clearance and working pressure?
Answer: On the water heater label
◉ Where can you find the water heaters wattage? Answer: On the water
heater label
◉ Gas water heaters must have combustion air where? Answer: 12"
from the top and 12" from the floor
◉ If a water heater is installed in the attic it must have? Answer: 24"
access to the heater
◉ Water Heater Cold water supply line must have? Answer: A full port
shut off valve
◉ Can you hard pipe the Supply and Outlet directly to the heater?
Answer: Yes
