NHIE Test
The service entry size for a 200-amp service is ___________.
#2/0-gauge copper
Electrical wire sheathing should not project more than 1 inch into the _____________.
1 inch
Shut Off valves 1) Where should shut off vales be located on a water heater supply & return lines? 2) An accessible gas shutoff valve for an appliance shall be located _______________.
1) 2) before the union connection and within 6 feet of the appliance
Evaporator coolers 1) Evaporator coolers have an air gap a minimum of ____ inch(es) between the water discharge at the float and the water level. 2) When inspecting an evaporative cooler, the inspector should report whether the ___________.
1) 1 inch 2) cooler is a one-speed or two-speed
Kitchen plumping/ electrical 1) Sink waste outlets should have a minimum diameter of ...... 2) Most kitchen sinks have an opening of .... in diameter. 3) A food waste grinder has a standard opening of ...., and so do most kitchen sink basket strainers. A .... or ..... should be provided to restrict the clear opening of the waste outlet. 4) The minimum size for a supply line to a kitchen sink is __ 5) The minimum trap and arm size for a kitchen sink is _____ inches. 6) Each of the following statements is true of branch circuits in a kitchen, except that _________. 7)Each of the following statements is true of branch circuits in a kitchen,
1) 1-1/2 inches. 2) 3-1/2 inches 3) 3-1/2 inches strainer or crossbar 4) 1/2 inch 5) 1 1/2 inches 6) countertop circuits may contain lighting fixtures 7) no point along the countertop may be more than 24 inches from a receptacle two 20-amp small-appliance circuits are required any circuit above the countertop must be GFCI-protected
Service drop clearances 1) The low point in a service drop must clear the ground where vehicles pass underneath by at least _____ feet. 2) A service mast must be used with a service drop if the _____________. 3) The clearance for an electrical service line over a roof with a slope of 4:12 or more is ____ feet. 4) The clearance for an electrical service line over a roof with a slope of less than 4:12 is ____ feet. 5) Electrical service lines should clear residential driveways by _____ feet. 6) Electrical service lines should clear public streets and alleys by _____ feet. 7) The vertical clearances of all service drop conductors are based on a conductor temperature of _____. 8) The minimum size for the support of a service drop conductor is _____ inch(es).
1) 12 ft 2) weatherhead does not clear the roof by 3 feet 3) 3ft 4) 8ft 5) 12ft 6) 18ft 7) 60 F 8) 1 1/4 inches
Gas piping 1) Gas pipe must be buried at least ____ inches underground. 2) Gas piping may run in or through a ________
1) 12 inches 2) combustion air vent
voltage 1) The nominal voltage provided to most new-construction houses is _______ volts. 2) T/F: Low-voltage systems are safe to handle live.
1) 120/240 2) false
AWG/amp 1) 14-AWG copper wire corresponds to ____-amp fuse size. 2) 10-AWG copper wire corresponds to ____-amp fuse size. 3) 12-AWG copper wire corresponds to ____-amp fuse size. 4) 8-AWG copper wire corresponds to _____-amp fuse size. 5) The minimum gauge for aluminum wire for a 20-amp breaker is _____ awg. 6) The minimum gauge for copper wire for a 20-amp breaker is _____ awg.
1) 15 amp 2) 30 amp 3) 20 amp 4) 40 amp 5) 10 awg 6) 12 awg
Cleanouts 1) The minimum required clearance in front of a 3-inch cleanout is ____ inches.
1) 18 inches
Toilet clearances 1) in front? 2) sides 3) two toilets, between? 4) An anchoring ring that is secured to the floor is a _____.
1) 21 inches 2) 15 inches 3) 30 inches 4) water closet flange
phases 1) A 3-phase electrical system has ___ poles.
1) 3 poles
Main Water supply Line 1) In new construction, min pipe sz for main water supply line? and The water supply for a house is usually _____. 2) main water supply line belongs too? 3) city water supply starts and ends for the homeowner? 4) The minimum required size for a house's main water supply line is _____.
1) 3/4 in 2) property owner 3) 4) 3/4 in
egress 1) The required egress door has to provide a clear space of at least ___ inches wide, measured from the door surface to the door stop when the door is open at a 90 degree angle. 12 24 32 36 48
1) 32
Gas Heaters 1) A flex line connected to a gas heater may be _____ feet long.
1) 3ft
Appliance amp sz for breakers 1) The minimum circuit breaker/fuse rating for a kitchen range is _____ amps. 2) The minimum circuit breaker/fuse rating for a clothes dryer is _____ amps. 3) T/F: A 20-amp receptacle can be installed on a 15-amp circuit. 4) The wire used in typical household circuits carrying no more than 15 amps is ________. #10-gauge #12-gauge aluminum #14-gauge copper #16-gauge copper 5) The correct size breaker to use with a 12-2 wire is _____ amps. 12 15 20 30 6) 14-2 Romex wire should be used with _____-amp breakers. 10 15 20 30 40
1) 40 amps 2) 30 amps 3) fasle 4) 14 gauge copper 5) 20 6) 15 amp breaker
Swimming pools 1)swimming pool barriers must be how many ft above grade? 2) : Gates and through-barriers leading to swimming pools must have a lock and a self-closing/self-latching device. 3) A septic system with a submersible grinder/effluent pump typically has a _________ 4) A swimming pool barrier is not required to be _____________. 5) The minimum height for a light installed over a swimming pool is _____ feet. 6) The maximum length for a power cord from the electrical receptacle to swimming pool equipment is ____ feet.
1) 4ft 48inches) 2) true 3) failure alarm 4) constructed of solid material 5) 12 ft 6) 3ft
Grounding 1) Most residential construction requires two separate grounding electrodes that need to be at least ____ feet apart. 2) The grounded and grounding conductors _____ bus in the service panel. 3) Each of the following is an approved method for grounding, 4 ways
1) 6ft 2) share a common service panel, seperate in sub panel 3) a concrete-encased electrode a grounding rod a metallic underground water pipe the metal frame of a building
Non-metallic sheathed cable 1) Non-metallic sheathed cable should be installed ___ feet away from a non-permanent ladder in an attic access where the wiring will not require physical protection. 2) Non-metallic sheathed cable should be secured ___________ if a retainer bushing is not used. 3) A non-metallic sheathed conductor without a bushing at the electrical sub-panel should be secured at _______ above the panel.
1) 6ft 2) 12 inches before the panel 3) 8ft
Aluminium wiring 1) The only suitable receptacles for use with aluminum wire should be marked ______. A ________ device should not be used with aluminum branch circuits. 2) Problems with aluminum wiring include all of the following, except ___________. 3) problems of aluminum wiring? aluminum is soft and easy to damage aluminum oxide is not a good conductor of electricity it lacks a ground wire it tends to creep some of the early aluminum wiring is low-quality 4) The minimum gauge for aluminum wire for a 20-amp breaker is _____ awg. 5) The reason for putting anti-oxidant on aluminum wiring connections is to __________. 6) A ___________ should not be used for aluminum branch circuits. 7) The approved device for binding copper to aluminum wire is a ___________
1) CO/ALR - CU/AL 2) lacks a ground 3) aluminum is soft and easy to damage aluminum oxide is not a good conductor of electricity it tends to creep some of the early aluminum wiring is low-quality 4) 10 awg 5) stop electrolysis 6) solderless connector 7) copalum parallel splice connector
Electrical statements T/F 1)The following statement is false: A 15- or 20-amp device with no markings uses copper wire only. Electrical devices marked CO/ALR use copper, copper-clad aluminum, or aluminum wire. Electrical devices marked CU-AL are for use only with copper wire. Push-in terminal devices can use aluminum wire if it has been coated with anti-oxidant. 2) The following statement is true?
1) Push-in terminal devices can use aluminum wire if it has been coated with anti-oxidant. 2) A 15- or 20-amp device with no markings uses copper wire only. Electrical devices marked CO/ALR use copper, copper-clad aluminum, or aluminum wire. Electrical devices marked CU-AL are for use only with copper wire.
Service panel cable entry 1) T/F: Nonmetallic-sheathed cable should be supported and secured by staples within 12 inches of an electrical junction box or cabinet. 2) Cables should be secured (usually by staple) within _____ inches of the electrical service panel. 3) The minimum size of the electrical service at a new-construction home is ______ amps. 100 200 30 60
1) True 2) inches 3) 100 amps
Air gaps 1) Two methods for installing a drain line for a dishwasher include an ....device and a _______. drip cap drip loop hi-loop lo-loop 2) It is typical to find a 1-inch air gap __________. 3) Evaporator coolers have an air gap a minimum of ____ inch(es) between the water discharge at the float and the water level.
1) air gap and hi-loop 2) between the end of a filler tube and a reservoir 3) 1 inch
Aluminum wiring 1) Aluminum wire was most commonly installed as residential wiring in the _________. 2 Aluminum cables must be larger than copper for the same rating. T/F 3) The main defect associated with aluminum wiring is ________. 4) can aluminum wiring be made safe for a home?
1) ate 1960s to the late 1970s 2) True 3) fire danger 4) yes
Gas furnaces 1) If there is insufficient air available to a gas furnace, __________ can occur. 2) All of the following are locations to look for evidence of scorching in a gas furnace, ? and not to look _________. 3) A yellow flame at a gas furnace indicates _____________. 4) High-efficiency gas furnaces improve heating efficiency by ______________. 5) If after turning up the thermostat to test a gas furnace, the unit fires up but then quickly shuts down, the likely cause is that __________.
1) back drafting 2) heat exchanger face plate, heat shield, cabinetry or cover ( not the condensate) 3) insufficient primary air 4) reducing the temperature rise and condensing flue gases 5) the exhaust vent is obstructed or too small
A _______ is the plumbing fixture most likely to lead to a cross-connection problem, where the potable water supply outlet becomes submerged in wastewater.
1) bidet
Service/ main panels 1) The neutral and ground wires should not be _______ downstream of the electrical service panel. 2) In most jurisdictions, at least ____ 120-volt circuits (spaces) are required for new 100-amp service panels. 12 24 36 42 60
1) bonded 2) 24
Fuses and breakers 1) Overcurrent protection devices 2) Two automatic circuit interrupters are ____________.
1) breakers, fuses 2) fuses and circuit breakers
Drain vents 1) When a drain vent for a bathroom is filled with water, the problem is likely a(n) ___________,
1) clogged drain
Bonding 1) bonding consists of? 2) A grounding bus should be found in all _____________. 3) Bonding ensures ______________. proper energizing proper grounding that two different metals will act as one the connection will not separate 4) Bonding the gas piping to the supply plumbing system means that _____________. the electrical potential of the gas piping is 120-volt the electrical potential of the plumbing system is 0-volt the electrical potential of the plumbing system is greater than the gas piping any stray electrical current will cause arcing, which otherwise could ignite the gas any stray electrical current will not cause arcing, which otherwise could ignite the gas
1) connections capable of carrying the anticipated ground-fault load for a given element, and connections between non-current-carrying, non-wire elements in an electrical system 2) main service panels 3) proper grounding 4) any stray electrical current will not cause arcing, which otherwise could ignite the gas
conduction/convection/radiation 1) Warm air rising off the pavement on a hot day is an example of heat transfer by __________. conduction convection radiation 2) Hydronic distribution systems use ________ as methods of heat transfer. conduction conduction and convection convection radiation radiation and conduction radiation and convection
1) convection 2) radiation and convection
Plumping pipe materials and use 1) The most common supply piping material used in modern home construction is __________. 2) ABS and PVC are types of ___________. 3) The two most common types of copper pipe are _______. 4) T/F: PVC and ABS pipes can't be joined because these materials expand at different rates and could separate and leak. 5) T/F: Stainless steel service piping is common in many areas. 6) The lead content of solder is typically restricted to ______ of 1%. 7) T/F: Lead piping typically uses elbows. 8) Brass water piping was most commonly used around __________. 9) Copper supply piping was first used in residential applications in the _______.
1) copper 2) plastic plumbing drainpipes and fittings 3) M&L 4) True 5) False 6) 1/5 7) false 8) 1935 9) 1930
1) Electrical resistance 2) A damaged or nicked wire is a safety hazard because the ___________________.
1) decreases with increasing wire diameter 2) effective resistance of the wire is increased, so the fuse can no longer adequately protect the wire from overheating
Wire gauges for appliances 1) Number 10 gauge wire is typically used for all of these appliance installations, except _________. air conditioners clothes dryers cooktops dishwashers saunas 2) 1) Number 10 gauge wire is typically used for all of these appliance installations,
1) dish washers 2) air conditioners clothes dryers cooktops saunas
A drainage system 1) includes a
1) drain, waste and vent.
Habitable rooms 1) Habitable room requirements? 2) The minimum area for a habitable room in a residence is ____ square feet. 3) Every dwelling is required to have _______________. 4) The minimum width for a habitable room (not a kitchen) is ____ feet. 5 6 7 8
1) egress heat light ventilation ceiling height 2) 70 sq ft 3) a toilet, lavatory, and bath or shower 4) 7ft
HVAC General heating 1) When a heating unit is installed in an attic, a(n) __________ is not required. 2) Most residential heating systems are of _______ output. fixed variable 3) The purpose of the HVAC portion of a general home inspection is to ensure that the system _________. has an efficiency of at least 80% has an output of at least 80,000 BTUs per hour is not hydronic is safe and adequately sized meets local building codes 4) The first type of heating system that didn't require manual stoking was fueled by _________. coal gas oil the sun wood
1) electrical cable extended through the plenum to the fan's limit switch 2) fixed 3) safe and sized properly 4) oil
dissimilar connections 1) T/F: It is acceptable to join copper pipes together using solder that contains lead.
1) false
floor drains 1) T/F: Perimeter drainage tiles should discharge into the walkout floor drain.
1) false
floor furnaces 1) T/F: Combustion air for floor furnaces is usually drawn from the living area. 2) T/F: Floor furnaces should rest on level ground.
1) false 2) false
Room Heaters 1) T/F: Combustion-fuel room heaters may be vented or unvented. 2) T/F: Room heaters may be oil-fired, gas-fired, or both. 3) T/F: Room heaters may be radiant or convective systems. 4) The minimum clearance above a combusible heater is ____ inches. 12 24 36 6
1) false 2) true 3) true 4) 36
Natural gas 1) __________ is not a normal combustion product of natural gas. Carbon dioxide Ferrous oxide Heat Water vapor 2) Incomplete combustion of natural gas produces ____________. carbon dioxide carbon monoxide nitrogen dioxide ozone sulfur dioxide
1) ferrous oxide 2) carbon monoxide
Forced Air heating systems 1) A forced warm-air system has ______________. 2) Short-cycling of a forced-air heating unit can be caused by ____ 3) A forced warm-air system consists of ____________. 4) A forced-air heating system that is fueled by oil is evidenced by the presence of a ___________. 5) The most critical component of a forced-air furnace is the __________. 6) T/F: Forced-air HVAC systems use fans and ducts to move air around the house.
1) filter system a heat exchanger rapid response when heat is needed 2) a clogged filter supply ducts that are too small the wrong size filter undersized return ducts 3) a combustion chamber a fan with a filter a heat exchanger and return ducting a supply 4) barometric damper 5) Heat exchanger 6) true
Range vents/ kitchens 1) One type of material that cannot be used for a kitchen range vent is __________.
1) flexible coil
Plumbing Vents/ stacks 1) cause of plumbing vent extending to far above the roof line? 2) plumbing vent stacks should terminate at least..above the roof line? 3) Plumbing stacks should terminate ____ feet horizontally from a window? 4) T/F: Exterior plumbing stack vents should be at least 3 feet above operable doors and windows. 5) Drain and vent stacks shall terminate _____________. 6) If there is no trap on a condensate line into a vent stack, _________________. 7) T/F: An offset is usually permitted in a BW vent.
1) frost Enclosure 2) 6 inches 3) 10 ft 4) true 5) up through the roof 6) sewer gases may enter the house through the blower coil 7) false
Heat exchanger defects 1) The likely cause of a flame that wavers at one burner in a gas furnace when the blower comes on is that the ____________. air flow across the heat exchanger is insufficient blower motor is running too slow gas valve is faulty heat exchanger has failed vent is partially blocked
1) heat exchanger has failed
Conductor colors 1) black represents?
1) hot
Knob&Tube wiring 1) Existing knob-and-tube wiring should be replaced 2) Some of the defects associated with knob-and-tube wiring include _ 3) Knob-and-tube wiring was commonly installed in homes in the U.S. __________. 4) Issues affecting knob-and-tube wiring include all of the following, except ____________. brittle wire insulation or sheathing connections to a updated wiring not installed in boxes fused neutrals overheated neutrals on multi-wire branch circuits wires buried in insulation 5) Knob-and-tube wiring does not have _________________. 6) All of the following are true of knob-and-tube systems, except that ____________. splices are not required to be placed in a box splices must be 6 inches from the insulator the tubes must penetrate wood two separate conductors are connected to individual knobs 7) All of the following are true of knob-and-tube systems,
1) if a grounded circuit is desired 2) brittle insulation or sheathing improper connections, connections to a updated wiring not installed in boxes wires covered by attic insulation fused neutrals 3) prior 1930s 4) overheated neutrals on multi-wire branch circuits 5) ground wire or junction box 6) splices are not required to be placed in a box 7)splices must be 6 inches from the insulator the tubes must penetrate wood two separate conductors are connected to individual knobs
Oil furnaces 1) An oil furnace that has a tripped primary control should be ____________.
1) inspected at the heat exchanger to check for pooling oil without re-setting the primary control
electric water heaters 1)Regarding electric water heaters, it's false that _____________. it can be difficult to tell if one of the two elements is burned out most units have two elements the lower element does more work the upper element usually comes off firs 2) When an electric water heater has stopped producing hot water, it is likely that __________.
1) it can be difficult to tell if one of the two elements is burned out 2) a breaker has tripped and/or the upper element has burned out
wire splicing 1) It is acceptable to have spliced wires in the attic as long as they're _________. bonded in a junction box not touching anything else wrapped with electrical wire
1) junction box
electrical wires 1) White wires can sometimes act as a black wire __________. by design on a reverse-polarity circuit in 240-volt circuits in multi-branch circuits on a dedicated circuit for a clothes dryer on a dedicated circuit for a washing machine 2) Where electrical conductors are to be spliced, terminated or connected to fixtures or devices, a minimum length of ____ inches of free conductor shall be provided at each outlet, junction or switch point. 3) T/F: The white wire is always the neutral. 4) In an electrical wiring system, the ______ tend(s) to wear out first. sheathing splices switches wire 5) The most dangerous situation in electrical wiring is caused by __________. improper grounding over-amperage over-tightening the fuses over-voltage
1) multi-branch circuits 2) 8 inches 3) false 4) switches 5) improper grounding
Weather head 1) The weather head that the service entrance connects to __________________. can be attached to the chimney determines the phase and voltage of the current entering the house is owned by the power company needs a drip loop or slack before the cables enter
1) needs a drip loop or slack before the cables enter
Drip loops 1) Function? 2) where is it required?
1) prevents water into masthead 2) masthead
s trap vs p trp
1) s trap prohibeted because of siophing problems 2) p trap allowed, max vertical length tailpiece 24 inches, max horizontail piece 30 inches, fixture tap must have min 2 inch liquid seal and 4 inch max liqued seal
Grounding electrodes/rods/pipe 1) A(n) _________ may not be used as a grounding electrode. 2) May be used as grounding rods? 3 materials.. 3) Rod and pipe electrodes on an electrical service shall not be less than _____ feet. 4) The size of bare solid wire that is normally found at a grounding rod is ______. 5) Rod and pipe electrodes on an electrical service shall not be less than _____ feet.
1) solid aluminum rod 2) galvanized steel conduit iron rod stainless steel rod 3) 8ft 4) #6 5) 8ft
Service panel/main panel 1) If the neutral wire bypasses the service panel, _____________. the ground wire will carry electricity under normal conditions the grounding electrode conductor won't reach the grounding rod the house's electrical system won't function properly the neutral and grounding system will not be properly connected the neutral wire may overheat 2) T/F: The neutral and equipment ground should be connected together in the service panel.
1) the house's electrical system won't function properly 2) true
Water heaters/ gas/oil/ fired 1) The inspector should evaluate the condition of a water heater for ____________. 2) A water heater cannot be installed in a ______________. 3) A gas water heater shall not be installed in the ___________. 4) The average service life of an oil- or gas-fired water heater is ________ years. 5) T/F: The minimum clearance in front of a combustion water heater is less for radiant heaters than for circulating heaters.
1) the presence of a TPR valve and proper connections to the hot and cold water supplies 2) bedroom or bathroom unless it's in a sealed enclosure 3) bathroom 4) 7-10 yrs 5) false
Double tapping 1) Double-tapping" is ____________. an approved method for extending a service panel's capacity not acceptable unless the same number of taps occur on one bus as the other the certified approach for installing a sub-panel the term for attaching two wires to a single fuse or breaker terminal the term for connecting two wires in a wire nut before connecting them to a breaker or fuse
1) the term for attaching two wires to a single fuse or breaker terminal
Basements 1) If the electrical receptacles in a finished basement are the two-hole type, you should report that _____________. 2) A receptacle located in a basement having a cracked cover should be reported as ______ 3) A concrete floor in a basement is ____________. always installed with rigid insulation underneath it not considered a structural component of the house not in danger of cracking usually 1/2-inch thick
1) they may be hazardous without a ground wire 2) unsafe system 3) non structural component
Traps 1) Traps are used too? 2) The purpose of drainage traps is to prevent _________. 3) The exterior floor drain at the bottom of walkout basement stairs should not have a _______. 4) A(n) _______ is a legal and commonly used trap. 5) Most plumbing codes allow _______. bell traps double-traps drum traps P-traps S-traps 6)The minimum size for a drain and trap at a kitchen sink is ______ inch(es). 7) The minimum size for a drain and trap at a lavatory is _____ inch(es). 8) A grease trap is ___________. a device to collect grease from the dishwashing station at a commercial kitchen a rooftop grease-collection tray that collects grease from the kitchen ventilation equipment an expression used by commercial inspectors to describe a commercial kitchen that has not been cleaned
1) trap odors and gasses 2) prevent sewer gasses from entering home 3) trap 4) p trap 5) p trap 6) 1 1/2 inches 7) 1 1/4 inches 8) a device to collect grease from the dishwashing station at a commercial kitchen
cables requirement with framing 1) T/F: Staples are required where cables run through holes in framing members.
1) true
electrical receptacles 1) T/F: Receptacles located higher than 5-1/2 feet above the floor are not counted as required receptacles. 2) T/F: Fixed door panels, such as the fixed portion of a sliding glass door, are not counted as floor space for the placement of required receptacles.
1) true 2) false
Gas fireplaces/ logs 1) T/F: A damper that is permanently open can be found where gas logs are in use. 2) T/F: Glass doors at fireplaces are designed to replace dampers. 3) T/F: Most gas igniters use pilot lights. 4) T/F: Most gas igniters use automatic gas valves. 5) T/F: Most gas igniters have an automatic shut-off. 6) T/F: A common problem with gas igniters is an obstruction in the piping. 7) T/F: Rusted piping is a common problem found with gas igniters. 8) T/F: Gas leaks are a common problem with gas igniters. 9) T/F: All gas fireplaces are considered decorative appliances only. 10) T/F: Some gas fireplaces are direct-vent systems.
1) true 2) false 3) false 4) false 5) false 6) true 7) true 8) true 9) false 10) true
evaporator coils 1)T/F: A loose or misaligned fan belt can reduce the amount of air flowing past the evaporator coil and decrease an air conditioner's performance. 2) comon problem with evaporators is lack of access to the coil 3) Evaporator inlet and outlet temperatures taken after a system has stabilized __________. determine the system's capacity. determine whether the two-speed blower is in use indicate how well the system is performing reveal a low or high refrigerant change
1) true 2) true 3) indicate how well the system is performing
1) Common problems with mid- and high-efficiency furnaces include all of the following, except _____________. clogging cracking overheating rust vibration 2) Common problems with mid- and high-efficiency furnaces include all of the following
1) vibration 2) clogging cracking overheating rust
mid efficiency& high efficiency furnaces 1) Common problems with mid- and high-efficiency furnaces include all of the following, except _____________. 2) Common problems with mid- and high-efficiency furnaces include all of the following, ?
1) vibration 2) clogging cracking overheating rust ( common problems)
GFCI 1) Required areas? 2) The function of a ground-fault circuit interrupter is that it ______________. 3) Which of these statements about GFCIs is true? 4) T/F: Inspectors are required to recommend that older homes be updated with GFCIs. 5) Every kitchen counter at least 12 inches wide should have a ______________. 6) Builders often use one GFCI to protect all of the __________ 7) GFCI receptacles can protect ordinary outlets _________. 8) A GFCI continually checks for a difference in current between the _____________. 9) GFCI receptacles detect.. 10) An electrical receptacle installed within ____ feet of a hot tub requires a GFCI. 11) Receptacles shall have GFI protection when they are _____ feet from a basin or water source. 12) To test a GFCI receptacle, use _________. 13) T/F: Without exception, all receptacles in a garage are required to have GFCI protection. 14) In an unfinished basement, you test a three-prong electrical outlet and confirm that it is a non-GFCI receptacle, so you report that _____________. 15) T/F: Pumps require GFCI protection. 16) All dishwashers installed in houses must be _____-protected
1) whirlpool baths, all kitchen counter top be GFCI protected 2) shuts the power off to a circuit when there is a 0.005-amp difference in the incoming and outgoing current flow 3) GFCIs are required in exterior circuits accessible from the ground/floor level in garages, bathrooms and kitchens. GFCIs must be tripped electrically by the inspector. GFCIs should be tested monthly. GFCIs should trip after a ground fault. 4) false 5) GFCI 6) bathrooms 7) downstream 8) hot and neutral 9) detect differences in current between the ungrounded conductor and the grounded conductor 10) 10ft 11) 6ft 12) gfci testing device 13) TRUE 14) gfci needs to be installed 15) false 16) GFCI
The power available in a typical 15-amp, 120-volt household circuit is _____ watts.
1800 15X120
Heat pumps 1) The component that has the least impact on the life expectancy of a furnace heat exchanger is the _____________. 2) A heat pump _________ 3) A heat pump is basically an air conditioner with a(n) ____________. 4) Below the balance point, a heat pump _____________. 5) A heat pump with a natural gas burner located outdoors below the evaporator coil is called a _________ 6) A ground-source heat pump collects or dissipates heat through ___________. 7) When a heat pump is in ___________________. 8) If a heat pump is operated in cooling mode when the outdoor temperature is below 65? F, the _________________. 9) When a heat pump system is switched from the cool to heat position, the ___________.
2) uses a reversing valve to reverse the refrigerant flow in the piping and is able to heat or cool a house 3) reversing valve 4) may not be able to generate enough heat to warm the house 5) Kool-fire system 6) piping buried in the ground 7) heating mode, the indoor coil acts as the condenser 8) compressor can be dmages 9) four-way reversing valve activates
Direct burial cable should be installed below grade ______ inches.
24 inches
A temporary service pole is usually installed in the earth to a depth of at least _____ feet.
3ft
A weep screed should be placed, How many inches above grade?
4 inches
The service size at a home having #6-gauge copper wires entering the service panel with two 60-amp fuses inside, with #3 copper conductors coming from the service panel leading to a newer combination panel that has a 100-amp main breaker is ______ amps.
60 amps
Double trapping fixtures is never?
Allowed
Combination Sewer
a sewer that handles both storm water and sanitary sewage
Wet vent
also acts as a drain
Both hot service wires feeding the electrical panel are typically __________.
black
Difference Between brass and copper supply pipe?
brass pipes have threaded joints and copper pipes have soldered joints
The vent exhaust is so low temperature because all ___ appliances are equipped with a secondary heat exchanger where heat is further extracted from the combustion air as the water vapor (a byproduct of combustion) cools and condenses to water.
category 4
The best conductor of electricity is _________. aluminum ceramic copper wood
copper
In a septic system, the connection point for a series of pipes that carry liquid waste to the leachfield is called a _________.
distribution box
A kitchen split-receptacle is a ____________.
duplex receptacle whose top and bottom halves are on individual dedicated circuits
A damaged or nicked wire is a safety hazard because the ___________________.
effective resistance of the wire is increased, so the fuse can no longer adequately protect the wire from overheating
Besides the neutral system, the _________ should be bonded to the ground.
electrical service panel
Linking
ensures that two fuses or circuit breakers are disconnected at the same time
defects in a main panel include
evidence of arcing excessive insulation two wires connected to one breaker unused knockouts that are popped out
T/F: Heat-circulator systems always require a fan that is thermostatically controlled.
false
T/F: If a satellite dish is mounted near a window, recommend that it be re-installed next to the chimney for better support.
false
Areas in shower and bathtub enclosures that are vulnerable to mildew include all of the following, except ___________. faucet penetrations grab bars soap dishes the top of the tile where it joins the conventional wall finish windows
grab bars
Wire nuts or solderless twist on connectors should be ____________
inside junction box
The inspector is required to ___________.
inspect the condition of controls inspect the condition of the heat source in each habitable area open access panels operate systems using their normal controls
service drop and service amperage 1) The voltage capacity of a residence can be determined by the __________. 2) The current rating of a system can be determined by _______________. 3) The _________ is a reliable indicator of service amperage. rating of the distribution panel rating of the meter size of the service drop wires size of the service entrance conductors size of the service entrance conduit
number of conductors entering the structure 2) the smallest rating from among the service drop, feeder cables, and the main disconnect 3) size of the service drop wires
Auxiliary panel 1) If an auxiliary panel has been added, the wires connecting it to the main service panel are protected by ________________.
overcurrent protection provided in the service panel and overcurrent protection provided at the auxiliary panel end only if the wire is protected in a rigid conduit that does not exeed 5 feet
The on-site water supply volume is defined as
rate of slow of water
The fixture in the house that's going to have the weakest flow and drainage is the ____________. fixture closest to the dishwasher because the dishwasher uses so much water highest fixture in the house lowest fixture in the house smallest fixture in the house toilet because it has only a cold-water supply
smallest fixture in the house
Basement waterproofing systems typically use ____________.
sump pumps
An electrical receptacle's polarity will be reversed when ____________.
the black and white wires are reversed at the outlet
Amps equals _________.
watts divided by volts (A = W / V)