National Home Inspector Exam (2023/2024) 494 Questions and Answers Rated A+

At what level would water pressure within a single-family dwelling begin to be considered excessive and require correction 80 PSI buckling in horizontal vinyl siding is generally caused by 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 an escape and rescue opening A swimming pool fence must prevent passage of a sphere that is larger than 4 inches If water infiltration is suspected behind a finished surface, what tool would be the best choice to verify dampness? non-contact moisture meter Gas-fired furnace heat exchangers most often fail from rust and metal fatigue relative humidity (RH) is expressed as percentage Connections of dissimilar metal in a plumbing system, such as galvanized steel pipe and copper pipe, will usually cause electrolysis A ground fault circuit interrupter (GFCI) is a safety device that 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 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 100 amps at 240 volts A floor joist in a crawl space has been cut where the toilet drain passes through the floor. the joists are 2x6 spaced at 16" on center. The inspector should recommend that a contractor be contacted to determine what is needed and make repairs Most problems with concrete are caused at the time of installation. What single factor causes MOST problems Too much water is added to the mix brick chimneys on older properties with oil heat sometimes curve above the roof line, with no visible cracks. What is a possible cause expansion of mortar Which set of building terms do not belong together cripple, trimmer, purlin which has the least effect on the deflection of a dimension lumber floor system joist width The normal Maximum rise of residential stair treads is 7 3/4 inches An ungrounded receptacle may be replaced by a ground fault circuit interrupter installed upstream from the receptacle circuit breakers protect the wire from an electrical overload In a forced air heating system containing a split system air conditioner and a humidifier, humidity is reduced by condensation at the evaporator coil a home inspection report Must include the type of roof material and the method of observation Water hammer can occur as a result of a lack of air chambers If a system designed for use with natural gas is supplied with propane gas the flame will be too high unless a smaller orifice is installed Low pressure boiler pipes do NOT carry steam pressure above 15 PSI When an asphalt shingle roof is installed over existing shingles, leakage commonly occurs at the penetrations Roof Trusses are usually designed for two-point bearing on a hillside house with foundation drain systems the foundation drain systems collect water passing through the slope