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A comprehensive set of questions and answers related to property and building inspections, focusing on electrical systems. It covers topics such as grounding electrode conductors, grounding systems, circuit voltage, wire gauges, overcurrent protection devices, and common electrical problems found during inspections. The material is presented in a question-and-answer format, making it useful for quick review and self-assessment. It also includes information on plumbing and hvac systems, making it a valuable resource for home inspectors and those studying building systems. Designed to help users understand the key aspects of property inspections and identify potential issues related to electrical, plumbing, and hvac systems.
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The grounding electrode conductors may also be called: - ANSWER Ground Wire The grounding systems are connected to the house neutral at the: - ANSWER ServiceBox
From the point where the ground and the neutral wires connect, there are two paths toground. What are they? - ANSWER Through the neutral wire or through the grounding electrode conductor to water pipes or grounding rods. What is the advantage of a 240 volt circuti - ANSWER More electricity can flow at a loweramperage rating.
Gas piping, "black pipe", can be used as a ground. - ANSWER FALSE 15 amp breakers use what gauge wire? - ANSWER 14 Gauge 20 amp breakers use what gauge wire? - ANSWER 12 gauge 30 amp breakers use what gauge wire? - ANSWER 10 gauge 40 amp breakers use what gauge wire? - ANSWER 8 gauge As it relates to fuses, what is a safety concern? - ANSWER A fuse that is too big. The grounded service conductor is called: - ANSWER The neutral.
An overcurrent protection device can be what? - ANSWER A fuse or a breaker Which of the following suggest an improperly supported service drop? - ANSWERMissing drop loop
Which of the following is a reliable indicator of service amperage? - ANSWER The size ofthe service entrance conductors.
Report as deficient breaker boxes that are? - ANSWER Installed in hazardouslocation/safety issues
What is the definition of a volt? - ANSWER A volt is a measurement of the force orpotential energy in an electrical system (V=IxR)
What is the definition of an ohm? - ANSWER An ohm is a measure of resistance toelectrical flow in a conductor or insulator (R=V/I)
What is a brief definition of an amp? - ANSWER An amp is a measure of how muchelectrical current is flowing (I=V/R)
What is a brief definition of watt? - ANSWER A watt is a measure of the rate of electricalenergy being consumed or released (P=VxI)
In most areas, for what distance can service entrance wires run inside the buildingbefore going into the service box without special permission? - ANSWER 0 feet or as short as possible. Service laterals are installed where? - ANSWER Underground What is a common problem with service drops? - ANSWER Proper clearance from roofs.
-The aluminum oxide is not a good conductor of electricity. Service entrance conductors run from the service drop to the service box or servicepanel. T or F - ANSWER True
The service size is determined by the amperage and voltage rating of the service. T or F- ANSWER True
All of these are common closet lighting problems Except - ANSWER the light is mountedon a wall above the door.
Common Problems:
Where must a light switch be for a light in the stairwell? - ANSWER Top and the bottomof the well.
The maximum cord length permitted for pool equipment is: - ANSWER 3 feet.
All switches must be greater than ______ horizontal feet from pool walls. - ANSWER 5feet.
A copper wire at least #_____ AWG must connect the structural rebar within the poolstructure and deck, wet niche fixtures of underwater lighting, slides, diving boards, ladders, pumps and their associated equipment, and any other exposed metalapparatus within ______ feet of pool walls. - ANSWER #8 and 5 feet
Solar photovoltaic systems use light from the sun to produce what type of electricity? -ANSWER Direct Current
Home Inspectors are required to inspect a solar Photovoltaic System? - ANSWER No The function of the outdoor condenser coil on an air condition is to - ANSWER transferheat from the refrigerant into the outdoor air.
Which of the following is NOT a common problem with an air condition compressor? -ANSWER Overcooling the refrigerant in the condenser.
Common Problems: Out of level Excessive noiseShort cycling or running continuously.
What is the difference between an Evaporative Cooler and an Air conditioner? -ANSWER Evaporative coolers cool air by filtering it through water, thus lowering its temperature. Air conditioning works by taking the humidity out of the home. What is the major advantage of an Evaporative cooler? - ANSWER Operating costs aretypically one half those of a central Air conditioner.
The common high temperature limit setting for a hot water boiler is - ANSWER 210degrees
An electric heating system has - - ANSWER an overcurrent protection device. All of the following are problems you'll commonly find on house air fan blowers EXCEPT -ANSWER Installed backwards
Common Problems: DirtyPoorly Secured Noisy or Vibrating Air leakage from ducts is a common and important problem. T or F - ANSWER True The most common exhaust pipe material used for high efficiency furnaces is: - ANSWERPVC
The primary function of insulation is to control heat loss. T or F - ANSWER True List 4 common forms that insulation materials may be found in: - ANSWER Loose fill Batts or blanketsRigid Boards Foamed in place What is minimum clearance from insulation for recessed electrical fixture not rated forcontact with insulation? - ANSWER 3 inches
The function of a vapor barrier is to protect the building from moisture damage. As wellas designed to protect it from moisture due to vapor diffusion, not air movement. - ANSWER False It is more important for the air barrier or vapor barrier to be continuous? - ANSWER AirBarrier
Should the vapor barrier be on the warm side or cold side of the wall assembly -ANSWER Warm Side
A vapor retarder is designed to, restrict vapor diffusion. T or F - ANSWER True What are the implications of an inadequate air/vapor barrier? - ANSWER Moisture mayget into the building structure, causing damage.
Indicate where the air/vapor barrier should be located in the wall assembly of a hot,humid climate? - ANSWER Outer parter of the wall, or not at all.
A traditional whole-house fan is a large ____ to ____ inch diameter fan that is installed inthe ceiling usually, in a central hallway. - ANSWER 24-36 inches
Attic ventilation that functions properly involves more than just install the required_______ area - ANSWER Ventilation area
The default attic ventilation area requirement is ____ square foot of net free area forevery ________ square feet of attic floor area or other ventilated space. - ANSWER 1 per
The supply water piping diameter inside houses should be at least ____ inches -ANSWER 1/
Pipe sizes that are reduced as you go downstream. Combustible piping used in multi-family buildings. non-standard piping materials. Soil pipes carry what? - ANSWER Liquid and solid waste from a toilet. What type of trap is allowed by most plumbing codes? - ANSWER P Trap. What is a wet vent? - ANSWER A wet vent occurs when the drain from on fixture isserving as the vent for another.
Exhaust flues on gas - or oil-fired water heater should have what? - ANSWER slop of 1/4inch per foot up away from the heater.
Temperature/pressure relief valves shut off the water heater if the temperature exceeds210 F? T or F - ANSWER True
Which type of water heater has the fastest revery rate? - ANSWER Oil Why is an explosion with propane more likely than with natural gas? - ANSWER Becausepropane is heavier than air, and can accumulate, especially in a low area.
What turns off the gas if there is a problem at a water heater and /or gas furnace? -ANSWER Thermocouple
Gas and liquid fuels used in residential HVAC and water heating systems are naturalgas, propane, and fuel oil. T or F - ANSWER True
What are the three components required on the discharge line from a sewage ejectorpump? - ANSWER A union, check valve, and gate valve
What is a sump pump designed to handle? - ANSWER Storm water from rain and meltingsnow that accumulates around the building.
Where the sump pump sits in an earthen sump, what is to be expected? - ANSWER Thesump walls will eventually collapse.
Range hood exhaust vents must:A. Be of aluminum, plastic, or smooth-wall metal. B. Terminate in attic or crawl space. C. Be less than 8 feet in length.D. None of the above. - ANSWER D
Cooktops with down-draft vents should be vented - ANSWER Outdoors At a range hood, excess noise or vibration or inadequate fan ________ or air flow must becalled out. - ANSWER Speed
Range hood________termination is not permitted in attic or crawl space areas, andoutdoor exhaust terminations require a backdraft damper. - ANSWER Exhuast
In a ductless kitchen exhaust system, the charcoal filter must be in place. T or F -ANSWER True
The inspector shall report as deficient a range exhaust pipe that is of inadequatematerial. T or F - ANSWER True
A kitchen exhaust using a blow is more efficient than one using a fan. T or F - ANSWERTrue
If a repair includes replacing the existing controller, an irrigator is required to install: -ANSWER A rain sensor or soil moisture sensor, if one is not present.
All new irrigation systems must include which of the following? - ANSWER A rain sensor The minimum allowable height of a barrier installed to restrict pool area entry is: -ANSWER 48 inches
When a barrier is composed of diagonal members, such as a lattice fence, the openingformed should not exceed: - ANSWER 1 3/4 inches
Openings in any window should be limited to not allow a sphere greater than _______inches in diameter to pass through, if the window latch is not 34 inches above the floor. - ANSWER 4 inches In practice, some inspectors inspect ________ structures as a courtesy to their client. -ANSWER Auxiliary
The condition of structures that are not attached to the house is out of scope of a homeinspection, except for detached garages and carports. T or F - ANSWER True
An inspector should report that a structure not attached to the home was present andwhether or not they inspected the structure. - ANSWER True
In many locations, water collects underground in a water saturated zone or in an________. - ANSWER Aquifer
Most wells use a ________ Pump and motor. - ANSWER Submersible. Atypical defects than an home inspector should react is:
A. High water pressure B. Medium water pressure C. Designed water pressureD. Low water pressure - ANSWER Low water pressure
What are the 3 most common septic systems? - ANSWER Tank, drain field, and soil Typical defect that home inspectors should report include:A. Wet oil at drain field B. Wet soil at drain field C. Fast drainage of plumbing fixturesD. Water tank - ANSWER B. Wet soil at drain field