OR: Residential Code Review (201029) Quiz Please sign up for the before taking this quiz. Back Save Progress Retry Finish 1. 198 – Industry Related Residential Version (201029)1In a residential closet, a junction box with 120-volt conductors is installed for the doorbell transformer. The Class 2 low voltage wires ___________. Only Class 1 low voltage wires may be ran. None of these statements are true may be run outside adjacent to the J box to provide separation may be installed in the same J box Reference: 725.136A&B 2. 197 – Industry Related Residential Version (201029)1A residential bathroom has a hydromassage tub with a metal pump motor, which is not double insulated. It shall be bonded with ___________ to the metal piping system. #6 AWG stranded CU None of these statements are true #8 AWG solid CU #8 AWG stranded CU Reference: 680.74 3. 196 – Industry Related Residential Version (201029)1A single family dwelling with an indoor packaged hot tub assembly may utilize romex as a wiring method if it ___________. Romex is not allowed to feed an indoor hot tub contains a copper equipment grounding conductor sized at a minimum of 10 AWG or larger only is installed in a raceway only complies with Part I and II of Article 680 Reference: 680.43 4. 195 – Industry Related Residential Version (201029)1For an indoor hot tub installation, a ceiling fan must be GFCI protected if it is located less than _____ feet above or _____ feet horizontally from the tub. 12, 5 None of these statements are true 14, 5 7 feet, 5 feet Reference: 680.43B 1 5. 194 – Industry Related Residential Version (201029)1An emergency disconnecting means is required for a hot tub not less than 5 feet and within sight. None of these statements are true For single-family dwelling unit. For a multifamily structure. Both A and B above are true statements. Reference: 680.41 6. 193 – Industry Related Residential Version (201029)1An outdoor hot tub requires a common bonding grid to eliminate any voltage gradient in the area. The bonding conductor must be at least a _____ AWG copper wire. #8 solid (due to possible corrosive influences that may adversely affect stranded conductors) None of these statements are true #10 solid or stranded #8 solid or stranded Reference: 680.26B 7. 191 – Industry Related Residential Version (201029)1Which of the below is a true statement? All of these statements are true All 125 V receptacle located within 20 feet of an outdoor hot tub are required to be provided with GFCI protection. All single phase, 15 and 20 amp, 120 through 240 volt receptacles that supply an outdoor hot tub motors are required to have GFCI protection regardless of their location. All 125 V receptacles rated 30 amperes or less and located within 10 feet of an indoor hot tub are required to be provided with GFCI protection. Reference: 680.22A, 680.43A 8. 190 – Industry Related Residential Version (201029)1For an outdoor hot tub, a 125 V, 15 or 20 ampere receptacle shall be located not less than _____ feet or more than _____ feet from the inside wall of the tub or more than _____ feet above the level of the tub. 5, 10, 2005 10, 15, 6.5 10, 20, 10 6, 20, 6.5 Reference: 680.22A 1 9. 189 – Industry Related Residential Version (201029)1 A one family dwelling unit swimming double insulated pool pump motor circuit connection may be installed with _____ in the interior of the structure. All of these Chapter 3 methods are allowed NM cable (Romex) Type MC cable listed for the location Rigid Nonmetalic Conduit (PVC, RNC) Reference: 680.21 A2 10. 184 – Industry Related Residential Version (201029)1Electric ranges and clothes dryers used in mobile homes shall be ___________. installed with the metal equipment enclosure junction box isolated installed with the grounded circuit conductor insulated from the grounding conductor and the metal equipment enclosures installed like in all existing dwelling units installed with the grounding conductor and the neutral bonded together Reference: 550.16A, 250.104 11. 183 – Industry Related Residential Version (201029)1Type NM cable (romex) is used as a temporary construction branch circuit. It is limited to _____ floors above grade. 3 Unlimited 4 5 Reference: 590.4C 12. 180 – Industry Related Residential Version (201029)1Electric heat cable with a conductive floor covering installed in a bathroom floor shall _____. have GFCI protection be only allowed in commercial structures be limited to 32 volts be prohibited Reference: 424.44E 13. 179 – Industry Related Residential Version (201029)1A residence is installing a new heating load of 28,000 watts in base board heaters on a 240-volt circuits. They are on more than 3 hours at a time so the actual continuous duty load is 35,000 watts (125%). The minimum number of 30 ampere branch circuits to supply these heaters is _____. 6 7 8 5 Reference: 424.4 14. 177 – Industry Related Residential Version (201029)1A dwelling unit has a dishwasher connected with a cord and plug. The plug and receptacle is installed to facilitate removal for servicing or repairs and they are allowed to serve as the disconnect for this appliance if ____. It is accessibly located in the undercounter space adjacent to the dishwasher. It is located behind the dishwasher requiring removal to gain access. None of these statements are true A plug and receptacle are not allowed to serve as a disconnect. Reference: 422.33 15. 176 – Industry Related Residential Version (201029)1When a gas-fired central heating furnace is installed in a dwelling unit, is a disconnect required for the 1/8 HP blower motor? A disconnect is not required, but recommended. Yes, unless the branch circuit breaker is within sight. No, the disconnect would be impracticable. No, only if the blower motor is 1/4 HP or more. Reference: 422.31A 16. 175 – Industry Related Residential Version (201029)1If the overcurrent protective device rating is marked on the name plate of the appliance, the branch circuit overcurrent device shall be no more than _____ of the rating. 50% 80% 125% 100% Reference: 422.11A 17. 174 – Industry Related Residential Version (201029)1Branch circuit conductors within _____ inches of a ballast, within the ballast compartment shall be recognized for use at temperatures not lower than 90 degree C. 4 1 3 2 Reference: 410.68 18. 173 – Industry Related Residential Version (201029)1Which types of luminaries (light fixtures) are permitted in clothes closets? Surface mounted fluorescents. Recessed incandescents with enclosed lamps. Surface mounted incandescents with enclosed lamps. All of these statements are true Reference: 410.16B 19. 172 – Industry Related Residential Version (201029)1 Which types of luminaries (light fixtures) are not permitted in clothes closets? Incandescents with an open lamp. Pendant mounted luminaries. All of these statements are true Incandescents with partially enclosed lamps. Reference: 410.16C 20. 171 – Industry Related Residential Version (201029)1A large clothes closet includes an area where both sides of the clothes hanging rods are exposed and accessible in the center of the closet. This storage space is considered _____ inches on either side of the hanging rods. 12 6 18 24 Reference: 410.16C 21. 170 – Industry Related Residential Version (201029)1The defined space in a bathtub zone may not necessarily rise all the way up to the ceiling. In a clothes closet, the area defined as storage space rises up to _____ feet above the shelf. 4 In a clothes closet, the area defined as storage space rises to the ceiling regardless of the ceiling height. 3 2 Reference: 410.16A Figure 22. 169 – Industry Related Residential Version (201029)1 Is it permissible to install a 15 or 20 ampere, 125 V receptacle outlet in a dwelling unit within 3 feet or more from a bathtub or shower stall? No, not within 5 feet and no further than 10 feet. No, not within 3 feet. No, not within 5 feet. No, not within 5 feet and no further than 10 feet and GFCI protected. Reference: 406.9C 23. 166 – Industry Related Residential Version (201029)1Receptacles rated _____ amperes or less directly connected to aluminum conductors shall be marked CO/ALR. 20 40 30 25 Reference: 406.3C 24. 165 – Industry Related Residential Version (201029)1Can a circuit breaker be used to switch 277 V fluorescent lighting circuits? None of these statements are true Yes, if they are marked HID Yes, if they are marked SWD. Both of these statements are true Reference: 404.11, 240.83D 25. 164 – Industry Related Residential Version (201029)1Snap switches are required to be grounded ___________. whether or not a metal coverplate is installed only when installed in a metal J box only when a metal coverplate is used only when installed in a dwelling unit Reference: 404.9B 26. 163 – Industry Related Residential Version (201029)1Snap switches can be grouped or ganged in outlet boxes if voltages between adjacent switches do not exceed _____ volts. 150 300 400 250 Reference: 404.8B 27. 162 – Industry Related Residential Version (201029)1The height of a circuit breaker used as a switch shall not exceed _____ above the floor. 5 feet 4.5 feet 6 feet, 7 inches 6 feet Reference: 404.8A 28. 161 – Industry Related Residential Version (201029)13-way and 4-way switches shall be wired so that all the switching is done in the ___________ conductor. grounded ungrounded neutral grounding Reference: 404.2 29. 159 – Industry Related Residential Version (201029)1Concealed knob & tube wiring is not allowed in the hollow space of a wall where the space ___________. None of these statements are true is insulated with blown-in insulation that surrounds the wire is not ventilated exceeds 35 degree C Reference: 394.12 30. 158 – Industry Related Residential Version (201029)1 Rigid Nonmetalic Conduit (RNC or PVC) is installed in a trench for a new service lateral. The local power company supplies the properly listed conduit in both gray and orange colors for the service and optics. The service lateral conduit can be ___________. grey colored conduit Two of these statements are true, the NEC is not clear on this. None of these statements are true orange colored conduit Reference: 352.6 352.10 31. 157 – Industry Related Residential Version (201029)1A 1-inch Rigid Nonmetalic Conduit (RNC or PVC) has a field bend made with a blanket bender. The radius of the curve to the centerline shall not be less than _____ inches. 7 inches 10 inches What’s shown in Table 2, Chapter 9 8 inches Reference: 352.24 32. 155 – Industry Related Residential Version (201029)1Type NM cable (romex) is permitted to connect fluorescent light fixtures in a residence in a dropped ceiling grid without support to a maximum length of not more than _____ feet. 4.5 3 4 3.5 Reference: 334.30 B2 33. 153 – Industry Related Residential Version (201029)1 NMB cable (romex) is required to be protected from physical damage when exposed. When passing through a floor the cable shall be enclosed in conduit extending at least 6 inches above the floor. None of these statements are true Two of these statements are true When run across the top of the truss joists in an accessible attic, the cable shall be protected by guard strips. Reference: 334.15B, 23 34. 152 – Industry Related Residential Version (201029)1A building has hallways with suspended T-bar ceilings to conceal air conditioning ducts. Open runs of NM (romex) are allowed in the dropped ceiling area if it is not used for environmental air-handling and the structure is classified as ___________. a dental facility one-family None of these statements are true commercial Reference: 334.12A 35. 149 – Industry Related Residential Version (201029)1In a combustible wall, the front edge of an outlet box may be set back no more than _____ inches from the finished surface. 1/2 0 1/8 1/4 Reference: 314.20 36. 148 – Industry Related Residential Version (201029)1A #4 copper conductor used for a residential dwelling unit branch circuit with 75 degree C terminations is rated for at least _____ amperes. 110 85 100 115 Reference: Table 310.16 37. 146 – Industry Related Residential Version (201029)1A 400 amp, single phase, 120/240 Volt parallel run could be composed of _____. 2, 3/0 copper conductors in parallel for A phase and 2, 250 KCMIL aluminum conductors in parallel for B phase All of these statements are true 2, 3/0 copper conductors in parallel for A phase and 2, 3/0 copper conductors in parallel for B phase 2, 250 KCMIL aluminum conductors in parallel for A phase and 2, 250 KCMIL aluminum conductors in parallel for B phase Reference: 310.10G 38. 143 – Industry Related Residential Version (201029)1A 24-volt landscape lighting system installed with UF cable in the yard of a residence is permitted with a minimum cover of _____ inches. 24 6 18 12 Reference: Table 300.5 39. 142 – Industry Related Residential Version (201029)1What is the minimum burial depth of a Rigid Nonmetalic Conduict (PVC) when it is encased by 3 inches of concrete when it is ran under a road? 0 inches The code is not really clear on this one, 24 inches is allowed. 6 inches 18 inches Reference: Table 300.5 40. 141 – Industry Related Residential Version (201029)1A new service lateral is installed 36 inches deep in a trench and it is not encased in concrete. It shall have a warning ribbon (caution tape) installed a minimum of _____ inches above the lateral conductors. 18 6 12 24 Reference: 300.5D 3 41. 138 – Industry Related Residential Version (201029)1If the service entrance conductors are 350 KCMIL copper, what is the minimum size copper grounding electrode conductor if this is the sole connection to a metal water pipe electrode? 1/0 #2 #4 #6 Reference: Tab250.66, 66A 42. 137 – Industry Related Residential Version (201029)1A 400 ampere residential service is installed with 2, 200 amp panels each fed with 4/0 AL ungrounded service entrance conductors. A grounding electrode conductor is needed for the metal plumbing piping system. All of these statements are true 2, #2 AL conductors can be ran, one from each panel 1, #2 CU conductor can be ran, with a tap outside the panel with a #4 CU ran down into the second panel 2, #4 CU conductors can be ran, one from each panel Reference: Tab250.66, 64D1 43. 136 – Industry Related Residential Version (201029)1A 200 ampere residential service is installed with 4/0 AL ungrounded service entrance conductors and needs a grounding electrode conductor installed to the metal plumbing piping system. This conductor can be sized _____. #2 AL #4 AL #6 CU None of these statements are true Reference: Tab. 250.66, 64 44. 135 – Industry Related Residential Version (201029)1The grounding electrode conductor generally shall be installed without a splice, but ___________. An irreversible compression connector can be used. A split bolt can be used. None of these statements are true A 2-barrel lug can be used. Reference: 250.64C 45. 134 – Industry Related Residential Version (201029)1Given a typical 200 ampere residential service, the grounding electrode conductor could be ran to the ground rods first and then to the metal water piping system if it is sized _____. #4 AWG AL #6 AWG CU #4 AWG CU #6 AWG AL Reference: 250.64F 46. 133 – Industry Related Residential Version (201029)1A structure has 2 separate services supplying the building. Each service requires a separate grounding electrode system. Each service can have a separate grounding electrode system as long as they are bonded together to create one system. Only one service would require a separate grounding electrode system. More than one service on a structure is never allowed. Reference: 250.58 47. 132 – Industry Related Residential Version (201029)1A supplementary electrode is installed for a lighting pole because this equipment may be subject to lightning strikes. If a ground rod is used as this supplementary electrode, how many are required? 1 2 Rods are not allowed as supplementary electrodes. None of these statements are true Reference: 250.54 48. 131 – Industry Related Residential Version (201029)1Two ground rods are installed six feet apart for a 200 ampere residential service. These ground rods can be located ___________. Inside the garage slab under the panel. Both of these statements are true Outside near the foundation of the home. None of these statements are true Reference: 250.53 49. 129 – Industry Related Residential Version (201029)1The electrical service for a small building is grounded to an existing underground metal water pipe where it enters the structure. This location has no other electrodes available. What is the minimum number of driven ground rods that are required for a supplementary grounding electrode? 1 (resistance to ground is more than 25 ohms) 2 The supplementary rod is recommended only. 0 Reference: 250.53D 2 50. 125 – Industry Related Residential Version (201029)1Service conductors that run above the top level of a window shall be permitted to be less than the _____ foot requirement. 4 8 3 6 Reference: 230.9A 51. 124 – Industry Related Residential Version (201029)1An outbuilding on residential property is wired with one 20 ampere, 120-volt feeder for lighting and outlets. The required disconnecting means shall be located near the point of entry. The required disconnecting means shall be red. A snap switch is allowed for the required disconnecting means. No disconnecting means is required for this situation. Reference: 225.36 52. 123 – Industry Related Residential Version (201029)1The height of a wall switch for a lighting outlet in a dwelling unit can be no more than _____. 6 feet 7 inches 5 feet 6 feet 4 feet Reference: 404.8 A 53. 122 – Industry Related Residential Version (201029)1A living room in a dwelling unit has 3 entry points (doorways) into the room. What is the minimum requirement for the number of lighting outlet switches? 2, 3-way switches 0 1 3, 2 to 3-way and 1 4-way switch Reference: 210.70A 1 54. 120 – Industry Related Residential Version (201029)1Which rooms in a dwelling unit may have a receptacle outlet controlled by a switch used for lighting instead of a lighting outlet? Bathroom None of these statements are true Kitchen Dining room Reference: 210.70A 1 55. 117 – Industry Related Residential Version (201029)1In order for the required receptacle outlet in the back of a dwelling unit to serve also as the required outlet for the air-conditioning equipment on the side of the home, it must be located within _____ feet of the unit. 30 10 25 50 Reference: 210.63 56. 116 – Industry Related Residential Version (201029)1An air-conditioner is located at grade level on the back of a residence. A receptacle outlet is also located on the back of a residence at a deck which is 3 feet above grade, within 10 feet of the AC equipment. This receptacle outlet cannot serve as the required outlet for the AC equipment. (must be on the same level) This receptacle outlet must be marked to indicate this dual usage. This receptacle outlet does not have to be GFCI protected. This receptacle outlet can serve as the required outlet for the AC equipment. Reference: 210.63 57. 115 – Industry Related Residential Version (201029)1A receptacle outlet must be installed at an accessible location for servicing rooftop heat pump equipment in ___________. one family dwellings All of these statements are true commercial buildings two family dwellings Reference: 210.63 58. 114 – Industry Related Residential Version (201029)1Which receptacle outlet location is permitted but not counted as a required receptacle location? An outlet that is part of a luminaire (light fixture). All of these statements are true Over 6 feet above the floor. Inside a kitchen cabinet. Reference: 210.52 59. 112 – Industry Related Residential Version (201029)1Receptacles located over _____ feet above the floor are not counted in the required number of receptacles along the wall. 4.5 4 6 5.5. Reference: 210.52 60. 111 – Industry Related Residential Version (201029)1 The residential small appliance branch circuit in a kitchen area ___________. may include a plug connected microwave oven receptacle installed on the countertop. may not include a countertop microwave oven load. may not include power for an electric clock receptacle in the kitchen. may not include power for a gas-fired cooktop receptacle. Reference: 210.52B 61. 110 – Industry Related Residential Version (201029)1 Given an island cabinet in a dwelling unit kitchen where the countertop is flat and you can’t mount a receptacle within 20 inches above the countertop, the receptacle can be a maximum of _____ inches below the countertop and still count as one of the required outlets. 3 6 18 This receptacle is no longer required Reference: 210.52 C2 62. 109 – Industry Related Residential Version (201029)1In dwelling unit bathrooms, at least one receptacle outlet shall be installed within _____ inches of the outside edge of each basin. 36 18 24 48 Reference: 210.52D 63. 108 – Industry Related Residential Version (201029)1The rating of a cord and plug connected central vacuum unit assembly shall not exceed _____ percent of the branch circuit rating it is installed on. 80 50 70 100 Reference: 210.23B1 64. 107 – Industry Related Residential Version (201029)1Tap conductors for household cooking equipment supplied from a 50-amp branch circuit shall have an ampacity of not less than _____. 50 70 80 20 Reference: 210.19C 65. 105 – Industry Related Residential Version (201029)1A dwelling unit has a single bathroom roughed in with a dedicated 20-ampere branch circuit which serves an outlet, light and exhaust fan in that room. This is allowed. None of these statements are true A 15-ampere branch circuit is also allowed. This is not allowed by code. Reference: 210.11C 3 ex 66. 104 – Industry Related Residential Version (201029)1 Does a duplex receptacle installed in a dwelling type occupancy for the refrigerator require GFCI protection? Yes, all kitchen receptacles Not if it is a single receptacle on the yoke installed for the refrigerator. No, never Not when it is installed on the wall behind the location for the refrigerator. Reference: 210.8A 6 67. 103 – Industry Related Residential Version (201029)1In a dwelling unit, a multiwire branch circuit supplying a split-wired receptacle is required to ___________. have a provision at the source to simultaneously disconnect all ungrounded conductors. have a separate neutral for each ungrounded conductor. have at least 2 neutrals. have color coded wires to help identify. Reference: 210.4B 68. 102 – Industry Related Residential Version (201029)1A 10-2 romex is used as a 240-volt branch circuit for a hot water tank. The white insulated conductor shall be re-identified as a hot ungrounded conductor at the terminations. This can be done with black phase tape. Both of these statements are true None of these statements are true This can be done with a black felt pen marker. Reference: 200.7C 69. 100 – Industry Related Residential Version (201029)1Flexible Metal Conduit (FMC or Flex) can be used in a wet location if… None of these statements are true Flexible metal conduit cannot be used in a wet location. The branch circuit conductors are rated for a wet location. The run prevents water from entering the enclosure. Reference: 348.12 70. 096 – Industry Related Residential Version (201029)1In a dwelling unit, one wall switch for a light is required at each floor level of a stairway with… 7 steps or more. 10 steps or more. 8 steps or more. 6 steps or more. Reference: 210.70A 2 71. 094 – Industry Related Residential Version (201029)1A hydromassage bathtub… Requires all 125-volt receptacles within 6 feet be GFCI protected. Requires motor be accessible without damaging the building. All of the statements are true. Requires metal piping system associated with the tub shall be bonded to the electrical equipment (motor). Reference: 680.71, 73, 74 72. 092 – Industry Related Residential Version (201029)1 An outdoor hot tub is installed… All of these statements are true. Requires a receptacle shall be located not further than 20 feet away. Requires a receptacle shall be located at least 6 feet away. Requires a receptacle to be 6' 6" or lower. Reference: 680.22A 73. 090 – Industry Related Residential Version (201029)1Which is not a requirement for swimming pool bonding? The bonding conductor shall be attached to the electrode. The bonding conductor shall be attached to the remote panelboard. The bonding conductor shall be attached to the remote service equipment. All of these statements are true Reference: 680.26 74. 088 – Industry Related Residential Version (201029)1A swimming pool pump motor supplied by a receptacle 6 feet away from the inside pool wall… Requires GFCI protection. Requires GFCI protection except for dwelling units. Does not require GFCI protection. Requires GFCI protection if 15 to 20-amp three phase only. Reference: 680.22A 75. 087 – Industry Related Residential Version (201029)1The junction “deck box” for a no-niche luminaire (lighting fixture) for a swimming pool shall… All of these statements are true Not be less than 8 inches above pool water level. Not be located in a walkway without protection. Not be less than 4 inches above ground level. Reference: 680.24A2 76. 086 – Industry Related Residential Version (201029)1What is the minimum mounting height of an outdoor mobile home disconnect? 3 1/2 feet from the bottom of the enclosure to finish grade. 2 feet from the bottom of the enclosure to finish grade. 3 feet from the bottom of the enclosure to finish grade. 4 feet from the bottom of the enclosure to finish grade. Reference: 550.32F 77. 085 – Industry Related Residential Version (201029)1 An outside mobile home disconnect shall… Be within 40 feet. Be within sight of the home. Be within 30 feet of the home. A disconnect is not required for a mobile home. Reference: 550.32A 78. 083 – Industry Related Residential Version (201029)1The general rule is all ____ amp 120-volt single phase receptacles used for temporary wiring shall be GFCI protected. 30 15 All of these statements are true 20 Reference: 590.6A 79. 082 – Industry Related Residential Version (201029)1As a general rule, the disconnecting means for air conditioning equipment shall… Be within sight from the unit. Can be installed on the unit. All of these statements are true Be readily accessible from the unit. Reference: 440.14 80. 081 – Industry Related Residential Version (201029)1Dishwasher nameplate, 8 amps (Continuous Duty, 125%)… Disposal nameplate, 3 amps… (Intermittent Duty, 85%) Can these be on the same 20-amp circuit and what is the total ampacity? Yes, 12.55 amps. No, 15 amps. Yes, 11 amps. Yes, 13 amps. Reference: 430.24 81. 080 – Industry Related Residential Version (201029)1Baseboard heaters… May be installed below receptacle outlets if over 15 ft. long. May be installed below receptacle outlets if over 12 ft. long. May be installed below receptacle outlets. Generally are not allowed to be installed below a receptacle outlet as per the manufacturers instructions. Reference: 424.10 notes 82. 078 – Industry Related Residential Version (201029)1Which ceiling paddle fan installation meets code? A fan less than 40 lbs. supported by an outlet box. A fan less than 35 lbs. supported by an outlet box listed for such a use. A fan less than 50 lbs. supported by an outlet box. None of these statements are true Reference: 422.18 83. 077 – Industry Related Residential Version (201029)1Recessed fixtures (can lights)… Can have thermal insulation installed next to the enclosure or ballast if identified suitable for direct contact (IC type). Can have thermal insulation installed next to the enclosure or ballast. Can have thermal insulation installed next to the ballast if it is not installed within 2 inches None of these statements are true Reference: 410.116A&B 84. 076 – Industry Related Residential Version (201029)1If a fluorescent light is mounted on the wall above a dwelling unit clothes closet door, the minimum clearance to storage space is… 12 inches. 4 inches. 6 inches. 10 inches. Reference: 410.16D 85. 075 – Industry Related Residential Version (201029)1Which type of fixture is not allowed in a clothes closet? A fluorescent with an enclosed lamp. All of these statements are true A fluorescent with an open lamp. An incandescent with an enclosed lamp. Reference: 410.16C 86. 074 – Industry Related Residential Version (201029)1No hanging luminaries (light fixtures), track lights, or ceiling fans are allowed over a bathtub within ___ feet horizontally and ___ feet vertically of the tub rim. 3, 8. 2, 6. 2, 8. 3, 6. Reference: 410.10D 87. 073 – Industry Related Residential Version (201029)1Which installation does not require a receptacle cover in a wet location that is weatherproof even with the plug cap inserted? (A bubble type cover) A pump motor. A RV plugged in for six months. An attended portable drill motor with a 30 ampere, 250 volt receptacle. A vending machine. Reference: 406.9A 88. 072 – Industry Related Residential Version (201029)1Does a replacement of a non-grounding receptacle required be of the grounding type at all times? Yes, and shall be connected to a grounding conductor. No, if no grounding means exists, either non-grounding or GFCI type will do. Yes, and it must be GFCI protected. None of these statements are true Reference: 406.4D 89. 071 – Industry Related Residential Version (201029)1On a circuit, a 2-wire non-grounding existing receptacle is replaced with a GFCI type. It needs to be marked… No Equipment Ground. No Grounded Conductor GFCI Protected. Not grounded. Reference: 406.4D 90. 070 – Industry Related Residential Version (201029)1As a general rule, a new installation of a snap switch…. Requires a 20-amp rated switch minimum. Requires it to be grounded if a job specification recommends it. Requires it to be grounded whether or not a metal faceplate is installed. Is not required to be grounded. Reference: 404.9B 91. 068 – Industry Related Residential Version (201029)1A light fixture mounted on a junction box is located near the ground for landscape lighting. Rigid Nonmetallic Conduit (RNC or PVC) is not allowed to support a fixture. 2 threaded rigid metal conduits wrench tight supported within 18" can be the sole support for the box.,Wrong:2 threaded intermediate metal conduits wrench tight supported within 18" can be the sole support for the box. All of these statements are true Reference: 352.10 (I), 314.23F 92. 067 – Industry Related Residential Version (201029)1Rigid Nonmetallic Conduit (RNC or PVC) expands and contracts when installed outdoors. If this change is _____ or greater in a strait run between securely mounted items, expansion fittings are needed. 1 inch. Any change requires an expansion fitting. .25 inches. .5 inches. Reference: 352.44 93. 066 – Industry Related Residential Version (201029)1When installing a (RNC or PVC) Rigid Nonmetallic Conduit expansion joint… All of these statements sound like good ideas. Do not install it all the way open or closed, compensate for today's temperature. If installing it on a vertical run, put the joint down so water won't run down inside. If installing in direct sunlight, compensate for temperature. Reference: 352.44 94. 063 – Industry Related Residential Version (201029)1A # 8 copper Nonmetallic-Sheathed Cable (romex) conductor is rated at ___ amps using the ___ column of Table 310-16. 55, 90 degree C. None of these statements are true 40, 60 degree C. 50, 75 degree C. Reference: 334.80, Table 310.16 95. 062 – Industry Related Residential Version (201029)1Flat Nonmetallic-Sheathed Cable (Romex) cannot… Be stapled on edge. Be secured by straps. Be secured by cable ties. Be secured by staples. Reference: 334.40 96. 061 – Industry Related Residential Version (201029)1Where Nonmetallic-Sheathed Cable (romex) cable is installed within ___ ft. of an attic access without a permanent ladder, it shall be protected by running boards. 6 7 3 5 Reference: 334.23 97. 059 – Industry Related Residential Version (201029)1 Type Nonmetallic-Sheathed Cable (romex) can be used in a residential building if it is ________ and the proper type construction. 4 floors but the 1st level is a parking garage 3 floors above grade, with a basement 40% above grade 3 floors above grade All of these statements are true Reference: 334.10 98. 058 – Industry Related Residential Version (201029)1A (RNC or PVC) Rigid Nonmetallic Conduit is installed as a sleeve or chase from a surface mounted panelboard, which does not penetrate a structural ceiling. “Jack Piping” Nonmetallic-Sheathed Cable (romex) is allowed to be installed in this raceway. None of these statements are true This conduit can be 20 feet in length. This conduit shall not be less than 12 inches in length. Reference: 312.5C 99. 057 – Industry Related Residential Version (201029)1What is the smallest size aluminum AWG size you could use for a 300-ampere residential service installation? 83% of the service rating. 250 KCMIL. 400 KCMIL. 500 KCMIL. Reference: 310.12A 100. 056 – Industry Related Residential Version (201029)1On a single phase, 225 amp dwelling service, the minimum ungrounded (hot) conductor size is… 83% of the service rating. 2/0 Copper. 4/0 Copper. 300 Kcmil Aluminum. Reference: 310.12A 101. 055 – Industry Related Residential Version (201029)1If Nonmetallic-Sheathed Cable (romex) are bundled together for longer than ___ inches, they shall be derated for allowable ampacities. 12 24 36 18 Reference: 310.15C 1 102. 054 – Industry Related Residential Version (201029)1Nonmetallic Sheathed Cable (romex) installed in a residential dwelling unit… Cannot be installed in the long dimension of an air handling space. Both of these statements are true Can be installed perpendicular to the long dimension of an air handling space. None of these statements are true Reference: 300.22C_ex 103. 053 – Industry Related Residential Version (201029)1In a multiwire branch circuit… Both A & B above are true. None of these statements are true The grounded conductors (Neutrals) shall be made up so if a device is removed it will not interrupt continuity. The ungrounded conductors (hots) shall be made up so if a device is removed it will not interrupt continuity. Reference: 300.13B 104. 052 – Industry Related Residential Version (201029)1Raceways exposed to different temperatures… Need to be sealed to prevent air exchange and circulation. Need to be sealed in commercial applications only. Need to be sealed when exposed to widely different temperatures. Need not be sealed and needs not to be prevented. Reference: 300.7 105. 051 – Industry Related Residential Version (201029)1When direct burial cable emerges from the ground, unless 30 volts or less or 20 amp residential GFCI circuits, it shall be protected by a raceway ___ inches below grade and up to ___ feet above grade. 24; 10. 24; 8. 18; 8. 18; 10. Reference: 300.5D 1 106. 050 – Industry Related Residential Version (201029)1Given an underground service lateral from a power company transformer to a customer owned service that you need to install. None of these statements are true If not encased in concrete, a warning ribbon must be placed in the trench at least 12 inches above the installation. If not encased in concrete, a warning ribbon must be placed in the trench along side with the installation. If not encased in concrete, a warning ribbon must be placed in the trench at least 6 inches above the installation. Reference: 300.5D 3 107. 049 – Industry Related Residential Version (201029)1When installing Nonmetallic Sheathed Cable (Romex) through metal stud framing members… Nonmetallic-Sheathed Cable (Romex) is not allowed in metal stud framing. A bushing or grommet is required in the opening. A bushing or grommet is required only for factory cut holes. A bushing or grommet is required only for field-punched holes. Reference: 300.4B 1 108. 048 – Industry Related Residential Version (201029)1When determining a proper depth of a ditch for an underground conduit. Measure from the bottom of the ditch. There is no specific requirement. Measure from the center of the conduit. Measure from the top of the conduit. Reference: Table 300.5_notes 109. 047 – Industry Related Residential Version (201029)1 A new installation of a branch circuit supplying a single-phase clothes dryer requires… Either A or B above. A 4 wire cable including an equipment ground. A 3 wire cable including an insulated neutral. None of these statements are true Reference: 250.140 110. 045 – Industry Related Residential Version (201029)1Which is a true statement? A metal conduit, which contains a grounding electrode conductor, does not need to be bonded. A metal conduit, which contains a grounding electrode conductor, needs to be bonded at both ends. A metal conduit, which contains a grounding electrode conductor, needs to be bonded at one end only. An EMT conduit, which contains a grounding electrode conductor, needs to be bonded at one end only. Reference: 250.64E 111. 043 – Industry Related Residential Version (201029)1 Ground rods must be driven and can have… 2 inches above grade level for the clamp. 0 inches above grade level for the clamp. 6 inches above grade level for the clamp 6 inches below grade level for the clamp Reference: 250.53A 4 112. 042 – Industry Related Residential Version (201029)1When a metal underground water pipe is used as an electrode… Both of these statements are true None of these statements are true It must be supplemented with a ground rod. If a rod is not 25 ohms or less, another additional rod must be used. Reference: 250.53D 2 113. 040 – Industry Related Residential Version (201029)1When an existing second building is supplied from the first, the neutral can be bonded when… There are not metal pipes or other continuous metal paths between the buildings. An equipment-grounding conductor is not ran. None of these statements are true Both of these statements are true Reference: 250.32B ex 114. 039 – Industry Related Residential Version (201029)1Conductors for a feeder where the ampere rating does not match with a standard circuit breaker… Can be used with the next higher standard breaker size if it is under 800 amps. All of these statements are true Can be used with the next higher standard breaker size. Must be used with a breaker the next lower standard size. Reference: 240.4B 115. 038 – Industry Related Residential Version (201029)1The minimum service entrance conductor ampacity is… All of these statements are true 60 amps for other loads. 30 amps for a two-circuit installation. 100 amps for a one family dwelling. Reference: 230.79 116. 037 – Industry Related Residential Version (201029)1Which is not an acceptable grouping of service disconnects? 2 disconnects installed together inside. 2 disconnects installed together inside and one 50 ft. away outside for a fire pump. 2 disconnects installed together outside. 1 disconnect installed outside and 3 inside. Reference: 230.72 117. 035 – Industry Related Residential Version (201029)1Service entrance conductors… Cannot be spliced. Cannot be spliced unless the authority having jurisdiction gives express permission. None of these statements are true Can be spliced. Reference: 230.46 118. 034 – Industry Related Residential Version (201029)1A house with a separate structure like a shop has one service location with one service lateral with the meter attached to the home. At the meter, you can have 2 disconnects grouped together outside, one for the home, the other for the shop. Both of these statements are true None of these statements are true You can have one disconnect at and for the home and another at and for the shop. (A meter loop.) Reference: 230.40 ex 3 119. 033 – Industry Related Residential Version (201029)1Service-drops not over 600 volts require… All of these statements are true 10 ft. of clearance over residential property driveways. 18 ft. of clearance over parking areas. 8 ft. of clearance over sidewalks. Reference: 230.24B 120. 032 – Industry Related Residential Version (201029)1Open service conductors installed on buildings require… 3 feet minimum clearance from windows if they can be opened. 4 feet minimum clearance from windows. 3 feet minimum clearance from windows. 4 feet minimum clearance from windows if they can be opened. Reference: 230.9A 121. 031 – Industry Related Residential Version (201029)1An outside pole light… None of these statements are true Does not require a disconnect on or at the pole. Requires a lockout at the panel. Requires a disconnect on or at the pole. Reference: 225.31 ex 4 122. 029 – Industry Related Residential Version (201029)1A dwelling lighting load demand factor is ____ % for 3001 to 120,000 watts. 50 35 40 25 Reference: Table 220.45 123. 027 – Industry Related Residential Version (201029)1 A required dwelling unit wall light switch for a room… Is required within 6 feet of a doorway. Has no specific location requirement, just near an entrance. Is required within 5 feet of a doorway. Is required within 4 feet of a doorway. Reference: 210.70A 124. 026 – Industry Related Residential Version (201029)1An air conditioner… All of these statements are true. Requires an outlet if it is a 2 family dwelling. Requires an outlet within 25 Ft. Requires an outlet on the same level for servicing it. Reference: 210.63 125. 025 – Industry Related Residential Version (201029)1If installed in an attic, does a furnace require a 15 – 20 amp rated outlet for servicing the unit? Yes, accessible and on the same level within 25 ft. Yes, but only for dwelling units. No, only on rooftops and in crawl spaces. No, only on rooftops within 25 ft. Reference: 210.63 126. 023 – Industry Related Residential Version (201029)1A 1500 square foot home; what are the least # of required circuits for lighting, small appliances, and laundry, with wood heat, (at 20 amp circuits)? 8 5 7 6 Reference: 210.52, 220.41 127. 022 – Industry Related Residential Version (201029)1For a one family dwelling where part of the basement is finished but another portion is not…. An additional outlet is required in the unfinished portion. An additional outlet is not required in the unfinished portion. Two additional outlets are required in the unfinished portion. None of these statements are true. Reference: 210.52G 128. 021 – Industry Related Residential Version (201029)1Two family dwellings (duplex) require how many grade level accessible outside receptacles? One for both units. None are required. Four, two for each unit, two in the front and the two in the back. Two, one for each unit, one in the front and the other in the back. Reference: 210.52E 129. 020 – Industry Related Residential Version (201029)1In a dwelling unit bathroom, a receptacle is required on the wall next to the sink within… 18 inches. 24 inches. 36 inches. 12 inches. Reference: 210.52D 130. 017 – Industry Related Residential Version (201029)1A GFCI protected 20-amp small appliance branch circuit… May not serve more than one kitchen. All of these statements are true May serve more than one but it is not recommended. May serve more than one kitchen. Reference: 210.52B 3 131. 016 – Industry Related Residential Version (201029)1A dwelling unit small appliance branch circuit for the kitchen cannot… All of these statements are true Include a receptacle for a gas fired range. Include an outside outlet. Include a receptacle for a refrigerator. Reference: 210.52B 2 132. 014 – Industry Related Residential Version (201029)1On a multi-family structure, which loads are permitted to be supplied from a dwelling unit? None of these statements are true Parking lot lighting. Central building security. Common pool wiring. Reference: 210.25B 133. 013 – Industry Related Residential Version (201029)1What is the maximum amperage allowed in a house for a 120-volt cord and plug connected load for a 15-amp circuit? 11 13 12 10 Reference: Table 210.21B 2 134. 011 – Industry Related Residential Version (201029)1In a dwelling unit bathroom… All of these statements are true. At least one 20-amp circuit is required. At least one 20-amp circuit is required, an exception allows other equipment within the same bathroom to be supplied by a 20-amp circuit if it is only a single bathroom. At least one 20-amp circuit is required, this 20-amp circuit shall be dedicated to supply bathroom receptacles only. Reference: 210.11C 135. 010 – Industry Related Residential Version (201029)1In a dwelling unit, the washing machine shall _____. None of these statements are true be installed on a separate 20-amp circuit and this circuit can serve laundry receptacle outlets in the laundry room. be installed on a separate 20-amp circuit. Both of these statements are true Reference: 210.11C 136. 009 – Industry Related Residential Version (201029)1Which does not require a GFCI protection device for a dwelling unit? A single receptacle for a freezer in a garage. One duplex receptacle for a freezer in a garage. Workbench outlet in a garage. All of these require GFCI protection. Reference: 210.8A 137. 007 – Industry Related Residential Version (201029)1A branch circuit for a dwelling unit is ran out for a small storage building for an inside 120-volt outlet at grade level. This receptacle is not required to be GFCI protected, but it is recommended. If this receptacle is 20-amp, it shall not be GFCI protected. If this receptacle is 15-amp, it shall not be GFCI protected. If this receptacle is 15 or 20 amp, it shall be GFCI protected Reference: 210.8A 138. 005 – Industry Related Residential Version (201029)1If you use a 12-3 romex as travelers between 3-way switches with the white used to supply the switch. None of these statements are true The white conductor shall be white with a colored green stripe. The white conductor must be permanently re-identified where visible. The white conductor does not have to be re-identified. Reference: 200.7C 139. 003 – Industry Related Residential Version (201029)1The minimum working space for indoor electrical equipment is from the floor to ____ feet above the equipment or structural ceiling if lower. 15 6.5 10 25 Reference: 110.26A 3 140. 002 – Industry Related Residential Version (201029)1When the term “In sight from” is used in the Code, what is the maximum distance permitted? 50 feet. 30 feet. 25 feet. 75 feet. Reference: Definitions Back Save Progress Retry Finish
