National Home inspector Exam 494
Questions And Answers
/. At what level would water pressure within a single-family dwelling begin to be
considered excessive and require correction - Answer-✅80 PSI
/.buckling in horizontal vinyl siding is generally caused by - Answer-✅improper fastening
/.A newer home with electric heat is being inspected. It has a below grade finished
basement containing a bedroom. The inspector should look for a smoke alarm and -
Answer-✅an escape and rescue opening
/.A swimming pool fence must prevent passage of a sphere that is larger than - Answer-
✅4 inches
/.If water infiltration is suspected behind a finished surface, what tool would be the best
choice to verify dampness? - Answer-✅non-contact moisture meter
/.Gas-fired furnace heat exchangers most often fail from - Answer-✅rust and metal
fatigue
/.relative humidity (RH) is expressed as - Answer-✅percentage
/.Connections of dissimilar metal in a plumbing system, such as galvanized steel pipe
and copper pipe, will usually cause - Answer-✅electrolysis
/.A ground fault circuit interrupter (GFCI) is a safety device that - Answer-✅disconnects
the power when sensing current leakage to ground
/.An electrical system with a fuse on the neutral conductor and on the energized (hot)
conductors - Answer-✅is hazardous and should be corrected
/.To operate a central air conditioner, an electric clothes dryer, and and electric range,
the ampacity of the service to the house should be AT LEAST - Answer-✅100 amps at
240 volts
Questions And Answers
/. At what level would water pressure within a single-family dwelling begin to be
considered excessive and require correction - Answer-✅80 PSI
/.buckling in horizontal vinyl siding is generally caused by - Answer-✅improper fastening
/.A newer home with electric heat is being inspected. It has a below grade finished
basement containing a bedroom. The inspector should look for a smoke alarm and -
Answer-✅an escape and rescue opening
/.A swimming pool fence must prevent passage of a sphere that is larger than - Answer-
✅4 inches
/.If water infiltration is suspected behind a finished surface, what tool would be the best
choice to verify dampness? - Answer-✅non-contact moisture meter
/.Gas-fired furnace heat exchangers most often fail from - Answer-✅rust and metal
fatigue
/.relative humidity (RH) is expressed as - Answer-✅percentage
/.Connections of dissimilar metal in a plumbing system, such as galvanized steel pipe
and copper pipe, will usually cause - Answer-✅electrolysis
/.A ground fault circuit interrupter (GFCI) is a safety device that - Answer-✅disconnects
the power when sensing current leakage to ground
/.An electrical system with a fuse on the neutral conductor and on the energized (hot)
conductors - Answer-✅is hazardous and should be corrected
/.To operate a central air conditioner, an electric clothes dryer, and and electric range,
the ampacity of the service to the house should be AT LEAST - Answer-✅100 amps at
240 volts
