National Home inspector exam 494 Questions and Answers Rated A

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National Home inspector exam 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 PS... I 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 A subpanel in an older house that is wired with non-metallic sheathed cable (NM) has one circuit with a ground wire. The ground wire ✔✔should be connected to a separate grounded buss bar [Show More]

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