AHIT UPDATED EXAMS SCRIPT QUESTIONS AND ANSWERS
SURE A+
✔✔Which type of supply pipe will rust from the inside out? - ✔✔galvanized
✔✔Water flow - relates to volume (gpm) if water pressure is low, water flow will be ____
- ✔✔low
✔✔?? - relates to the push behind the flow (psi). _______ may be good but the flow
could be poor due to dirty water conditioning filters, constricted pipes, wrong size pipes,
partially closed valves, etc. - ✔✔Water pressure
✔✔Which type of plastic piping is blue-gray? - ✔✔polybutylene (PB)
✔✔What is a symptom of a water-logged pressure tank? - ✔✔the pump runs constantly
and/or short cycles
✔✔What is the purpose of an anti-siphon device? - ✔✔To prevent waste water from
backing up into the water supply system.
✔✔A plumbing vent has to extend at least ?? inches above the roof and be at least ??
feet from a window. - ✔✔6-inches above the roof and 10 feet from a window.
✔✔How is horizontal cast iron piping vulnerable? - ✔✔sewer gas can eat through the
top of the pipe
✔✔what type of trap is approved under current codes? - ✔✔P-trap
✔✔A rumbling or thumping noise heard while a gas water heater is firing indicates -
✔✔sediment in the tank
✔✔hot water smells like rotten eggs. What would be one way to remove odor? -
✔✔replace magnesium anode tube with an aluminum tube
(normally, flushing the tank corrects the problem)
✔✔T/F - Low voltage lighting systems are part of a home inspection. - ✔✔False. They
are not inspected according to standards.
✔✔How many wires are there from the street to the house in a 240 volt system? - ✔✔3
✔✔How many feet of clearance does the NEC require for overhead service drops over
a driveway or pedestrian area? - ✔✔12' and 10'
, ✔✔A main disconnect with two 60 amp fuses would indicate what amperage rating? -
✔✔60 amps
✔✔The maximum number of disconnects for a main electrical panel is: - ✔✔6
✔✔The neutral and the ground wires in a sub-panel must be: - ✔✔Separated and the
neutral wire isolated from the panel.
✔✔What should the home inspector do if he or she finds aluminum branch circuit
wiring? - ✔✔recommend an electrician familiar with Al wiring be called in to evaluate the
service
✔✔A three-prong receptacle with an open ground:
A) is okay
B) should be replaced with a 2 prong outlet
C) should not be reported
D) should not be tested - ✔✔B) should be replaced with a 2 prong outlet
✔✔Reverse polarity is
A) wired without a ground
B) possible to cause a shock hazard
C) hot and neutral wires reversed
D) Both B & C - ✔✔D) possible to cause a shock hazard and hot/neutral wires reversed.
✔✔A new electric dryer circuit
A) must be dedicated
B) must be grounded
C) is typically 220 volts
D) must have 4 wires
E) all of the above - ✔✔E - all of the above
✔✔When inspecting the heating equipment, the inspector is NOT REQUIRED to
A) operate the system using normal operating controls
B) open readily openable access panels provided by the manufacturer
C) observe automatic safety controls
D) operate heating systems when conditions may cause equipment damage - ✔✔D)
operate heating systems when conditions may cause equipment damage
✔✔What color should the flame be in a properly operating oil burner? - ✔✔Bright
orange or yellow-white
✔✔What are the results of complete combustion? - ✔✔carbon dioxide and water vapor
SURE A+
✔✔Which type of supply pipe will rust from the inside out? - ✔✔galvanized
✔✔Water flow - relates to volume (gpm) if water pressure is low, water flow will be ____
- ✔✔low
✔✔?? - relates to the push behind the flow (psi). _______ may be good but the flow
could be poor due to dirty water conditioning filters, constricted pipes, wrong size pipes,
partially closed valves, etc. - ✔✔Water pressure
✔✔Which type of plastic piping is blue-gray? - ✔✔polybutylene (PB)
✔✔What is a symptom of a water-logged pressure tank? - ✔✔the pump runs constantly
and/or short cycles
✔✔What is the purpose of an anti-siphon device? - ✔✔To prevent waste water from
backing up into the water supply system.
✔✔A plumbing vent has to extend at least ?? inches above the roof and be at least ??
feet from a window. - ✔✔6-inches above the roof and 10 feet from a window.
✔✔How is horizontal cast iron piping vulnerable? - ✔✔sewer gas can eat through the
top of the pipe
✔✔what type of trap is approved under current codes? - ✔✔P-trap
✔✔A rumbling or thumping noise heard while a gas water heater is firing indicates -
✔✔sediment in the tank
✔✔hot water smells like rotten eggs. What would be one way to remove odor? -
✔✔replace magnesium anode tube with an aluminum tube
(normally, flushing the tank corrects the problem)
✔✔T/F - Low voltage lighting systems are part of a home inspection. - ✔✔False. They
are not inspected according to standards.
✔✔How many wires are there from the street to the house in a 240 volt system? - ✔✔3
✔✔How many feet of clearance does the NEC require for overhead service drops over
a driveway or pedestrian area? - ✔✔12' and 10'
, ✔✔A main disconnect with two 60 amp fuses would indicate what amperage rating? -
✔✔60 amps
✔✔The maximum number of disconnects for a main electrical panel is: - ✔✔6
✔✔The neutral and the ground wires in a sub-panel must be: - ✔✔Separated and the
neutral wire isolated from the panel.
✔✔What should the home inspector do if he or she finds aluminum branch circuit
wiring? - ✔✔recommend an electrician familiar with Al wiring be called in to evaluate the
service
✔✔A three-prong receptacle with an open ground:
A) is okay
B) should be replaced with a 2 prong outlet
C) should not be reported
D) should not be tested - ✔✔B) should be replaced with a 2 prong outlet
✔✔Reverse polarity is
A) wired without a ground
B) possible to cause a shock hazard
C) hot and neutral wires reversed
D) Both B & C - ✔✔D) possible to cause a shock hazard and hot/neutral wires reversed.
✔✔A new electric dryer circuit
A) must be dedicated
B) must be grounded
C) is typically 220 volts
D) must have 4 wires
E) all of the above - ✔✔E - all of the above
✔✔When inspecting the heating equipment, the inspector is NOT REQUIRED to
A) operate the system using normal operating controls
B) open readily openable access panels provided by the manufacturer
C) observe automatic safety controls
D) operate heating systems when conditions may cause equipment damage - ✔✔D)
operate heating systems when conditions may cause equipment damage
✔✔What color should the flame be in a properly operating oil burner? - ✔✔Bright
orange or yellow-white
✔✔What are the results of complete combustion? - ✔✔carbon dioxide and water vapor
