NHIE and AHIT Exam Questions || with 100% Verified
Solutions.
This type of water heater ventilation system uses the natural upward movement of airflow to
filter exhaust gases up and out of the home. correct answers atmospheric ventilation system
The shutoff valve for a gas water heater's supply line may not be more than _____ feet from the
water heater. correct answers 6
Water heaters must be installed in a location that has a level working space that is at least _____
inches long and _____ inches wide. correct answers 30, 30
Water heaters that use a gas fuel source may not be located in a room with _____ machinery.
correct answers air-handling
Chimney Cap correct answers mounted above the crown, preventing water, birds, small animals,
and debris from getting inside the chimney while allowing smoke and gas to escape.
Chimney Crown correct answers the top level of the chimney, with a sloped surface directing
much of the water away from the chimney
Spark arrestor correct answers mesh covering that stops sparks and embers from leaving the
chimney.
Irrigation systems conserve water by the use ___ ____ or ___ ___ sensors (SMS). correct
answers rain sensors, soil moisture
What 2 components are in a zone for a sprinkler system? correct answers valve, sprinkler head
What is a backflow preventor? correct answers Stops water contaminated from pesticides,
fertilizers, or other chemicals from entering the home's supply of drinking water by allowing
water to flow only one way
What are 2 possible locations for the irrigation system's shut-off valve? correct answers below
backflow preventor or underground, in line with water supply
Four types of well pumps: correct answers shallow well jet, centrifugal, deep well jet, deep well
submersible
Pressure switch correct answers senses water pressure and turns the pump off and on and is
normally mounted on piping at the water pressure tank.
Two types of septic systems: correct answers conventional, alternative
, In a conventional septic system, sludge and scum remain in the tank, and the liquid called ____
leaves the tank. correct answers effluent
A ___ ___ is a network of perforated pipes in trenches or beds of gravel. correct answers drain
field
For ranges, vent hood ducts must (3): ___, ___, and ___. correct answers terminate outside the
home, have a smooth interior surface and be constructed of (galvanized steel, stainless steel, or
copper), and be airtight
What 3 things can prevent cross connections at some equipment and fixtures: correct answers
anti-siphon devices, vacuum breakers, air gaps
S-traps can be converted to a vented P-trap through the use of an: correct answers air admittance
valve
This type of meter was installed in the last 20 years. They're usually compatible with 200 amp
service, although there are exceptions. correct answers Rectangular-base meters
UL stands for: correct answers Underwriters Laboratory
This type of meter was installed 50 or more years ago. They were originally rated for 60 amps.
Later generations of round-base meters were rated at 100 amps. correct answers Round-base
meters
This type of meter was installed 40 or more years ago. They were normally rated at 100 amps,
with later generations sometimes rated at 125 amps. correct answers Square-base meters
The ____ ____ are the wires coming into the home from the utility company's meter. They can
be copper, aluminum, or copper-clad aluminum. correct answers service conductors
Which two types of service conductors require the same gauge for a given amperage rating?
correct answers aluminum and copper-clad aluminum
True or False: An electrician should always be called to evaluate aluminum branch circuit
wiring. correct answers True
Grounded or Ungrounded: Until the 1960s most electrical receptacles were _____ . They only
had 2 slots in them for appliance plugs with two prongs. correct answers ungrounded
At three-pronged receptacles, when the ground wire is not connected to the receptacle ground
screw or there is no ground wire as in an older home, it is called an: correct answers open ground
Dimmer switches run _____ than standard switches. (Hotter or Colder) correct answers Hotter
Solutions.
This type of water heater ventilation system uses the natural upward movement of airflow to
filter exhaust gases up and out of the home. correct answers atmospheric ventilation system
The shutoff valve for a gas water heater's supply line may not be more than _____ feet from the
water heater. correct answers 6
Water heaters must be installed in a location that has a level working space that is at least _____
inches long and _____ inches wide. correct answers 30, 30
Water heaters that use a gas fuel source may not be located in a room with _____ machinery.
correct answers air-handling
Chimney Cap correct answers mounted above the crown, preventing water, birds, small animals,
and debris from getting inside the chimney while allowing smoke and gas to escape.
Chimney Crown correct answers the top level of the chimney, with a sloped surface directing
much of the water away from the chimney
Spark arrestor correct answers mesh covering that stops sparks and embers from leaving the
chimney.
Irrigation systems conserve water by the use ___ ____ or ___ ___ sensors (SMS). correct
answers rain sensors, soil moisture
What 2 components are in a zone for a sprinkler system? correct answers valve, sprinkler head
What is a backflow preventor? correct answers Stops water contaminated from pesticides,
fertilizers, or other chemicals from entering the home's supply of drinking water by allowing
water to flow only one way
What are 2 possible locations for the irrigation system's shut-off valve? correct answers below
backflow preventor or underground, in line with water supply
Four types of well pumps: correct answers shallow well jet, centrifugal, deep well jet, deep well
submersible
Pressure switch correct answers senses water pressure and turns the pump off and on and is
normally mounted on piping at the water pressure tank.
Two types of septic systems: correct answers conventional, alternative
, In a conventional septic system, sludge and scum remain in the tank, and the liquid called ____
leaves the tank. correct answers effluent
A ___ ___ is a network of perforated pipes in trenches or beds of gravel. correct answers drain
field
For ranges, vent hood ducts must (3): ___, ___, and ___. correct answers terminate outside the
home, have a smooth interior surface and be constructed of (galvanized steel, stainless steel, or
copper), and be airtight
What 3 things can prevent cross connections at some equipment and fixtures: correct answers
anti-siphon devices, vacuum breakers, air gaps
S-traps can be converted to a vented P-trap through the use of an: correct answers air admittance
valve
This type of meter was installed in the last 20 years. They're usually compatible with 200 amp
service, although there are exceptions. correct answers Rectangular-base meters
UL stands for: correct answers Underwriters Laboratory
This type of meter was installed 50 or more years ago. They were originally rated for 60 amps.
Later generations of round-base meters were rated at 100 amps. correct answers Round-base
meters
This type of meter was installed 40 or more years ago. They were normally rated at 100 amps,
with later generations sometimes rated at 125 amps. correct answers Square-base meters
The ____ ____ are the wires coming into the home from the utility company's meter. They can
be copper, aluminum, or copper-clad aluminum. correct answers service conductors
Which two types of service conductors require the same gauge for a given amperage rating?
correct answers aluminum and copper-clad aluminum
True or False: An electrician should always be called to evaluate aluminum branch circuit
wiring. correct answers True
Grounded or Ungrounded: Until the 1960s most electrical receptacles were _____ . They only
had 2 slots in them for appliance plugs with two prongs. correct answers ungrounded
At three-pronged receptacles, when the ground wire is not connected to the receptacle ground
screw or there is no ground wire as in an older home, it is called an: correct answers open ground
Dimmer switches run _____ than standard switches. (Hotter or Colder) correct answers Hotter
