OR: Residential Code Review (201029) Quiz Please sign up for the before taking this quiz. Back Save Progress Retry Finish 1. 199 – Industry Related Residential Version (201029)1Telephone communication wires installed in a wood framed wall generally should be separated by at least _____ inch(es) from NM cable (romex) at 120 volts. No separation is needed. 3 1 2 Reference: 800.133B 2. 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 is installed in a raceway only complies with Part I and II of Article 680 contains a copper equipment grounding conductor sized at a minimum of 10 AWG or larger only Reference: 680.43 3. 194 – Industry Related Residential Version (201029)1An emergency disconnecting means is required for a hot tub not less than 5 feet and within sight. Both A and B above are true statements. For a multifamily structure. None of these statements are true For single-family dwelling unit. Reference: 680.41 4. 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 or stranded #10 solid or stranded #8 solid (due to possible corrosive influences that may adversely affect stranded conductors) None of these statements are true Reference: 680.26B 5. 192 – Industry Related Residential Version (201029)1Which, if any, circuit conductors may be installed with the GFCI protected conductors in a nonmetallic raceway used for an underwater swimming pool light? The 240 volt branch circuit for the pool pump motor without GFCI protection. None of these statements are true The 120 volt branch circuit (not required to be GFCI protected) used for outside lights. Both of these statements are true Reference: 680.23F 3 6. 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 7. 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. NM cable (Romex) All of these Chapter 3 methods are allowed Rigid Nonmetalic Conduit (PVC, RNC) Type MC cable listed for the location Reference: 680.21 A2 8. 188 – Industry Related Residential Version (201029)1Insulated service drop conductors rated 120 volts to ground with a bare grounded neutral conductor is installed over a swimming pool. They shall be a minimum of _____ feet above the water level. 27 22.5 25 10 Reference: Table 680.9A 9. 187 – Industry Related Residential Version (201029)1 A park trailer is intended to be used for ___________. None of these statements are true seasonal use a permanent dwelling temporary office use Reference: 552.4 10. 186 – Industry Related Residential Version (201029)1Mobile home disconnecting means shall be located not less than _____ feet above finished grade. 4 3 5 2 Reference: 550.32F 11. 185 – Industry Related Residential Version (201029)1The minimum size service for a mobile home in a mobile home park is _____ amperes. 200 100 150 80 Reference: 550.32C 12. 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. 4 5 Unlimited 3 Reference: 590.4C 13. 182 – Industry Related Residential Version (201029)1The length of a supply cord to a 120-volt rated room air-conditioner shall not exceed _____ feet. 3 6 10 4 Reference: 440.64 14. 181 – Industry Related Residential Version (201029)1 An owner of a nice home wants to install a walk-in freezer in his garage area. It has an evaporator fan motor inside. Unless the installation is covered by either of the exceptions, a disconnecting means if required for the evaporator motor. Two of these statements are true None of these statements are true The disconnecting means if required is to be visible, within sight, and not more than 50 feet away. Reference: 430.102, 440.14 15. 180 – Industry Related Residential Version (201029)1Electric heat cable with a conductive floor covering installed in a bathroom floor shall _____. be prohibited have GFCI protection be only allowed in commercial structures be limited to 32 volts Reference: 424.44E 16. 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 _____. 8 5 6 7 Reference: 424.4 17. 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 located behind the dishwasher requiring removal to gain access. None of these statements are true It is accessibly located in the undercounter space adjacent to the dishwasher. A plug and receptacle are not allowed to serve as a disconnect. Reference: 422.33 18. 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? No, the disconnect would be impracticable. No, only if the blower motor is 1/4 HP or more. A disconnect is not required, but recommended. Yes, unless the branch circuit breaker is within sight. Reference: 422.31A 19. 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% 125% 80% 100% Reference: 422.11A 20. 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. 2 1 4 3 Reference: 410.68 21. 173 – Industry Related Residential Version (201029)1Which types of luminaries (light fixtures) are permitted in clothes closets? Recessed incandescents with enclosed lamps. Surface mounted incandescents with enclosed lamps. All of these statements are true Surface mounted fluorescents. Reference: 410.16B 22. 172 – Industry Related Residential Version (201029)1 Which types of luminaries (light fixtures) are not permitted in clothes closets? Incandescents with partially enclosed lamps. Incandescents with an open lamp. All of these statements are true Pendant mounted luminaries. Reference: 410.16C 23. 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 24 18 6 Reference: 410.16C 24. 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 2 In a clothes closet, the area defined as storage space rises to the ceiling regardless of the ceiling height. 3 Reference: 410.16A Figure 25. 168 – Industry Related Residential Version (201029)1A homeowner wants a track light installed over the bathtub in his residence. Both of these statements are true This is allowed if no part of the fixture is within 3 feet horizontally of the tub. None of these statements are true This is allowed if no part of the fixture is within 8 feet of the top of the tub rim. Reference: 410.10D 26. 164 – Industry Related Residential Version (201029)1Snap switches are required to be grounded ___________. only when installed in a metal J box only when installed in a dwelling unit only when a metal coverplate is used whether or not a metal coverplate is installed Reference: 404.9B 27. 162 – Industry Related Residential Version (201029)1The height of a circuit breaker used as a switch shall not exceed _____ above the floor. 6 feet 4.5 feet 6 feet, 7 inches 5 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 grounding ungrounded neutral Reference: 404.2 29. 160 – Industry Related Residential Version (201029)1Flexible cord cannot be used as the ___________ wiring of a structure. Both of these statements are true temporary permanent None of these statements are true Reference: 400.12 30. 159 – Industry Related Residential Version (201029)1Concealed knob & tube wiring is not allowed in the hollow space of a wall where the space ___________. is insulated with blown-in insulation that surrounds the wire is not ventilated exceeds 35 degree C None of these statements are true Reference: 394.12 31. 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 ___________. None of these statements are true orange colored conduit grey colored conduit Two of these statements are true, the NEC is not clear on this. Reference: 352.6 352.10 32. 156 – Industry Related Residential Version (201029)1Power conductors in type NMC cable are manufactured in copper sizes ___________. #14-#4 #14-#6 #14-#2 #12-#2 Reference: 334.104 33. 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. 3 4 4.5 3.5 Reference: 334.30 B2 34. 154 – Industry Related Residential Version (201029)1The overall covering for type NMC cable shall be ___________. All of these statements are true moisture resistant corrosion resistent flame retardant Reference: 334.116B 35. 153 – Industry Related Residential Version (201029)1 NMB cable (romex) is required to be protected from physical damage when exposed. Two of these statements are true 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 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 36. 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 None of these statements are true one-family commercial Reference: 334.12A 37. 151 – Industry Related Residential Version (201029)1A luminaire (light fixture) weighs over 50 pounds and it is supported from an outlet box. The code requires _____. This installation be specifically approved by the authority having jurisdiction. None of these statements are true The fixture be independently supported unless the box is listed over 50 pounds. An outlet box cannot be used as support of the fixture. Reference: 314.27A 38. 150 – Industry Related Residential Version (201029)1Threaded boxes not over 100 cubic inches that contain a device, shall be considered supported when 2 or more conduits on the same side are threaded into the box if each conduit is supported within _____ inches of that box. 30 24 36 18 Reference: 314.23F 39. 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. 1/4 0 1/2 1/8 Reference: 314.20 40. 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. 100 115 85 110 Reference: Table 310.16 41. 146 – Industry Related Residential Version (201029)1A 400 amp, single phase, 120/240 Volt parallel run could be composed of _____. 2, 250 KCMIL aluminum conductors in parallel for A phase and 2, 250 KCMIL aluminum conductors in parallel for B phase 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 Reference: 310.10G 42. 145 – Industry Related Residential Version (201029)1 There are 4 separate raceways used to enclose paralleled conductors. 2 conduits shall be rigid steel and two may be rigid nonmetallic conduit (PVC). 4 conduits may be rigid steel, the code is not clear on this None of these statements are true 3 conduits shall be rigid steel and one may be rigid nonmetallic conduit (PVC). Reference: 310.10G 43. 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. 6 24 12 18 Reference: Table 300.5 44. 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? The code is not really clear on this one, 24 inches is allowed. 18 inches 6 inches 0 inches Reference: Table 300.5 45. 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. 24 18 12 6 Reference: 300.5D 3 46. 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 #6 #4 #2 Reference: Tab250.66, 66A 47. 135 – Industry Related Residential Version (201029)1The grounding electrode conductor generally shall be installed without a splice, but ___________. None of these statements are true An irreversible compression connector can be used. A split bolt can be used. A 2-barrel lug can be used. Reference: 250.64C 48. 133 – Industry Related Residential Version (201029)1A structure has 2 separate services supplying the building. More than one service on a structure is never allowed. Only one service would require 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. Each service requires a separate grounding electrode system. Reference: 250.58 49. 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 ___________. None of these statements are true Inside the garage slab under the panel. Outside near the foundation of the home. Both of these statements are true Reference: 250.53 50. 130 – Industry Related Residential Version (201029)1Some metal water piping systems can deteriorate with time and may even end up being replaced with a nonmetallic system. This is one reason the code requires a supplemental grounding electrode as a backup. If a ground rod is used as this supplemental electrode, how many are required? 0 1 (Resistance to ground is more than 25 ohms) 2 Rods are not allowed to supplement the piping system. Reference: 250.53 51. 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? 2 The supplementary rod is recommended only. 1 (resistance to ground is more than 25 ohms) 0 Reference: 250.53D 2 52. 128 – Industry Related Residential Version (201029)1If an equipment grounding conductor is installed with a feeder to a separate structure, the equipment grounding conductor shall not be bonded to the ___________. Grounded conductor Grounding electrode conductor The disconnect enclosure None of these statements are true Reference: 250.32B 53. 126 – Industry Related Residential Version (201029)1For a single family dwelling, the minimum size service disconnecting means shall be _____ amperes. 125 75 100 60 Reference: 230.79C 54. 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. 3 6 4 8 Reference: 230.9A 55. 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 red. A snap switch is allowed for the required disconnecting means. The required disconnecting means shall be located near the point of entry. No disconnecting means is required for this situation. Reference: 225.36 56. 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 _____. 4 feet 6 feet 7 inches 5 feet 6 feet Reference: 404.8 A 57. 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? 1 0 2, 3-way switches 3, 2 to 3-way and 1 4-way switch Reference: 210.70A 1 58. 121 – Industry Related Residential Version (201029)1A wall switch in a dwelling unit can be installed ____. None of these statements are true Both of these statements are true Outside the room it serves Inside the room it serves Reference: 210.70A 59. 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? None of these statements are true Bathroom Kitchen Dining room Reference: 210.70A 1 60. 119 – Industry Related Residential Version (201029)1A dwelling unit dining room has a receptacle controlled by a wall switch instead of a lighting outlet. This is allowed when the switch is supplied by a general purpose branch circuit and it is installed in addition to the required small appliance branch circuit. None of these statements are true Both A and B above are true statements. This is allowed when the switch is supplied by the small appliance branch circuit required to serve this room. Reference: 210.70, 52B 1 61. 118 – Industry Related Residential Version (201029)1A homeowner wants an occupancy sensor installed in his home office for lighting. Both of these statements are true This is allowed for one mounted on the ceiling if a wall switch is also installed. This is allowed if the occupancy sensor replaces the wall switch if it is equipped with a manual override that allows it to function as a wall switch. None of these statements are true Reference: 210.70A 1 62. 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. 10 25 30 50 Reference: 210.63 63. 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 does not have to be GFCI protected. 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 can serve as the required outlet for the AC equipment. Reference: 210.63 64. 113 – Industry Related Residential Version (201029)1Floor boxes shall be considered to meet the requirement of the spacing receptacles on walls if they are ___________. within 18 inches of the wall within 12 inches of the wall within 24 inches of the wall within 36 inches of the wall Reference: 210.52A 3 65. 111 – Industry Related Residential Version (201029)1 The residential small appliance branch circuit in a kitchen area ___________. may not include a countertop microwave oven load. may not include power for a gas-fired cooktop receptacle. may not include power for an electric clock receptacle in the kitchen. may include a plug connected microwave oven receptacle installed on the countertop. Reference: 210.52B 66. 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. 6 3 This receptacle is no longer required 18 Reference: 210.52 C2 67. 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. 100 70 50 80 Reference: 210.23B1 68. 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 _____. 70 20 80 50 Reference: 210.19C 69. 106 – Industry Related Residential Version (201029)1 Dwelling unit receptacle outlets shall be protected by arc-fault circuit interrupter protection ___________. Even for sunroom receptacles. None of these statements are true even for bathroom receptacles. even for outside receptacles. Reference: 210.12B 70. 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. None of these statements are true This is allowed. A 15-ampere branch circuit is also allowed. This is not allowed by code. Reference: 210.11C 3 ex 71. 104 – Industry Related Residential Version (201029)1 Does a duplex receptacle installed in a dwelling type occupancy for the refrigerator require GFCI protection? No, never Yes, all kitchen receptacles Not when it is installed on the wall behind the location for the refrigerator. Not if it is a single receptacle on the yoke installed for the refrigerator. Reference: 210.8A 6 72. 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. Both of these statements are true This can be done with a black felt pen marker. This can be done with black phase tape. None of these statements are true Reference: 200.7C 73. 101 – Industry Related Residential Version (201029)1Is a circuit breaker without a HACR marking suitable as a disconnecting means for an outdoor air conditioner? If the marking on the unit indicates fuses, the circuit breaker does have to be a HACR type None of these statements are true If the marking on the unit specifies fuses or circuit breaker, the breaker does not have to be a HACR type if fuses are used. If the marking on the unit indicates fuses or HACR circuit breaker, the breaker does not have to be a HACR type if no fuses are used. Reference: 110.3B 74. 099 – Industry Related Residential Version (201029)1For each yoke or strap containing one or more devices, a ______ volume allowance is made based on the largest conductor connected to the device to calculate box fill. Triple. Double. Single. No allowance is needed for devices. Reference: 314.16B 4 75. 097 – Industry Related Residential Version (201029)1As a general rule, unless an exception is met, when one structure is fed from another… Up to three are allowed if identified. Only one feeder is allowed. There is no specific restriction on the number of feeders allowed. Two feeders are allowed if identified. Reference: 225.30 76. 095 – Industry Related Residential Version (201029)1As a general rule, conductors of Class II wiring as for a thermostat circuit ____ placed in any enclosure, box, raceway, etc., with conductors of electric light, power, Class I, and non-power limited fire alarm circuits. Can be. Shall not be. Can be if 600 volt insulation. Can be if 300 volt insulation. Reference: 725.136A 77. 093 – Industry Related Residential Version (201029)1Which shall have ground fault circuit interrupter protection? An outdoor fountain. An indoor hot tub supplied by an outlet. A hydromassage bathtub. All of the installations require GFCI protection. Reference: 680.43, 56A, 71 78. 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 to be 6' 6" or lower. Requires a receptacle shall be located at least 6 feet away. Reference: 680.22A 79. 091 – Industry Related Residential Version (201029)1In case someone gets stuck under water on the intake opening, an emergency shutoff or control is required for a hot tub…. And is not required for single-family dwellings. At least 5 feet away. Within sight of the tub. All of these statements are true Reference: 680.41 80. 090 – Industry Related Residential Version (201029)1Which is not a requirement for swimming pool bonding? The bonding conductor shall be attached to the remote service equipment. The bonding conductor shall be attached to the remote panelboard. The bonding conductor shall be attached to the electrode. All of these statements are true Reference: 680.26 81. 089 – Industry Related Residential Version (201029)1The number 8 solid copper conductor required for swimming pool bonding in the grid can be installed with… Any creative fitting. Indoor type water pipe clamps. Aluminum clamps. Listed pressure connectors. Reference: 680.26B, 250.8 82. 087 – Industry Related Residential Version (201029)1The junction “deck box” for a no-niche luminaire (lighting fixture) for a swimming pool shall… Not be less than 8 inches above pool water level. All of these statements are true Not be located in a walkway without protection. Not be less than 4 inches above ground level. Reference: 680.24A2 83. 086 – Industry Related Residential Version (201029)1What is the minimum mounting height of an outdoor mobile home disconnect? 4 feet from the bottom of the enclosure to finish grade. 3 feet from the bottom of the enclosure to finish grade. 2 feet from the bottom of the enclosure to finish grade. 3 1/2 feet from the bottom of the enclosure to finish grade. Reference: 550.32F 84. 085 – Industry Related Residential Version (201029)1 An outside mobile home disconnect shall… A disconnect is not required for a mobile home. Be within sight of the home. Be within 30 feet of the home. Be within 40 feet. Reference: 550.32A 85. 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. 20 All of these statements are true 15 30 Reference: 590.6A 86. 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. 6 inches. 4 inches. 10 inches. Reference: 410.16D 87. 075 – Industry Related Residential Version (201029)1Which type of fixture is not allowed in a clothes closet? An incandescent with an enclosed lamp. All of these statements are true A fluorescent with an open lamp. A fluorescent with an enclosed lamp. Reference: 410.16C 88. 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. 3, 6. 2, 8. 2, 6. Reference: 410.10D 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 Grounded Conductor Not grounded. No Equipment Ground. GFCI Protected. Reference: 406.4D 90. 069 – Industry Related Residential Version (201029)1A switch needs to be located so that the operating handle when installed will not be higher than… 6 ft. 8 inches. 6 ft. 6 inches. 6 ft. 7 inches. 6 ft. Reference: 404.8 91. 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. .25 inches. .5 inches. Any change requires an expansion fitting. Reference: 352.44 92. 064 – Industry Related Residential Version (201029)1Flexible Metal Conduit (FMC or Flex) may have up to ____ quarter bends per run. 3 4 6 5 Reference: 348.24B 93. 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. 40, 60 degree C. 55, 90 degree C. None of these statements are true 50, 75 degree C. Reference: 334.80, Table 310.16 94. 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. 5 6 3 7 Reference: 334.23 95. 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. 3 floors above grade, with a basement 40% above grade All of these statements are true 3 floors above grade 4 floors but the 1st level is a parking garage Reference: 334.10 96. 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 97. 057 – Industry Related Residential Version (201029)1What is the smallest size aluminum AWG size you could use for a 300-ampere residential service installation? 400 KCMIL. 250 KCMIL. 83% of the service rating. 500 KCMIL. Reference: 310.12A 98. 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. 18 36 24 12 Reference: 310.15C 1 99. 054 – Industry Related Residential Version (201029)1Nonmetallic Sheathed Cable (romex) installed in a residential dwelling unit… Can be installed perpendicular to the long dimension of an air handling space. Both of these statements are true Cannot be installed in the long dimension of an air handling space. None of these statements are true Reference: 300.22C_ex 100. 053 – Industry Related Residential Version (201029)1In a multiwire branch circuit… None of these statements are true The ungrounded conductors (hots) shall be made up so if a device is removed it will not interrupt continuity. Both A & B above are true. The grounded conductors (Neutrals) shall be made up so if a device is removed it will not interrupt continuity. Reference: 300.13B 101. 052 – Industry Related Residential Version (201029)1Raceways exposed to different temperatures… Need to be sealed in commercial applications only. Need not be sealed and needs not to be prevented. Need to be sealed when exposed to widely different temperatures. Need to be sealed to prevent air exchange and circulation. Reference: 300.7 102. 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. 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 12 inches above the installation. None of these statements are true If not encased in concrete, a warning ribbon must be placed in the trench at least 6 inches above the installation. Reference: 300.5D 3 103. 048 – Industry Related Residential Version (201029)1When determining a proper depth of a ditch for an underground conduit. Measure from the top of the conduit. There is no specific requirement. Measure from the center of the conduit. Measure from the bottom of the ditch. Reference: Table 300.5_notes 104. 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 3 wire cable including an insulated neutral. None of these statements are true A 4 wire cable including an equipment ground. Reference: 250.140 105. 046 – Industry Related Residential Version (201029)1Listed Flexible Metallic (Flex) Conduit is an approved grounding means when… Conductors installed in the flex are rated 30 amps and on a 30 amp breaker maximum. The total lengths of flex in a combined run are not longer than 6 feet. All of these statements are true The longest section of flex in a combined run is 6 feet. Reference: 250.118 5 106. 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 107. 044 – Industry Related Residential Version (201029)1If a made electrode (ground rod) is to be used to ground a service…. They can, as a last resort, be buried in a 2 1/2 ft. deep ditch. They can be driven at a 45* angle if rock is found. If practicable, they need to be installed below moisture level. All of these statements are true Reference: 250.53A 4 108. 043 – Industry Related Residential Version (201029)1 Ground rods must be driven and can have… 0 inches above grade level for the clamp. 2 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 4 109. 041 – Industry Related Residential Version (201029)1If it is available on the job site, a metal water pipe that enters the building and is in direct contact with earth for ___ feet or more shall be connected as an electrode within ___ from emergence from the ground. 5, 10 feet 10, anywhere 10, 20 feet 5, 5 feet Reference: 250.52A, 250.68C 110. 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. None of these statements are true Both of these statements are true An equipment-grounding conductor is not ran. Reference: 250.32B ex 111. 038 – Industry Related Residential Version (201029)1The minimum service entrance conductor ampacity is… 60 amps for other loads. 30 amps for a two-circuit installation. All of these statements are true 100 amps for a one family dwelling. Reference: 230.79 112. 036 – Industry Related Residential Version (201029)1 As a general rule, overhead service weatherheads… Shall be above the point of attachment of the service drop. Shall be at the point of attachment of the service drop. Can be both above or below within 30 inches of the attachment of the service drop. Shall be below the point of attachment of the service drop. Reference: 230.54C 113. 035 – Industry Related Residential Version (201029)1Service entrance conductors… Can be spliced. None of these statements are true Cannot be spliced unless the authority having jurisdiction gives express permission. Cannot be spliced. Reference: 230.46 114. 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. You can have one disconnect at and for the home and another at and for the shop. (A meter loop.) None of these statements are true Both of these statements are true At the meter, you can have 2 disconnects grouped together outside, one for the home, the other for the shop. Reference: 230.40 ex 3 115. 033 – Industry Related Residential Version (201029)1Service-drops not over 600 volts require… 18 ft. of clearance over parking areas. 10 ft. of clearance over residential property driveways. All of these statements are true 8 ft. of clearance over sidewalks. Reference: 230.24B 116. 031 – Industry Related Residential Version (201029)1An outside pole light… None of these statements are true Requires a disconnect on or at the pole. Requires a lockout at the panel. Does not require a disconnect on or at the pole. Reference: 225.31 ex 4 117. 030 – Industry Related Residential Version (201029)1Which is not a true statement of an outside feeder from one building to another? The disconnect in (A) above must be suitable for use as service equipment. If building #2 is supplied by more than one feeder, permanent identification is required. A disconnect is required at building #2. Building #2 is limited to 8 disconnects grouped in one location. Reference: 225.31, 36, 37 118. 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 220.45 119. 028 – Industry Related Residential Version (201029)1A wall switch for a light is required at each outdoor entry… In commercial buildings. In dwelling, commercial and industrial buildings. In dwelling units. None of these statements are true Reference: 210.70A 120. 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. Is required within 5 feet of a doorway. Is required within 4 feet of a doorway. Has no specific location requirement, just near an entrance. Reference: 210.70A 121. 026 – Industry Related Residential Version (201029)1An air conditioner… Requires an outlet on the same level for servicing it. Requires an outlet within 25 Ft. Requires an outlet if it is a 2 family dwelling. All of these statements are true. Reference: 210.63 122. 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? No, only on rooftops and in crawl spaces. Yes, accessible and on the same level within 25 ft. No, only on rooftops within 25 ft. Yes, but only for dwelling units. Reference: 210.63 123. 024 – Industry Related Residential Version (201029)1In a guest room of hotel or motel, does the number of receptacle outlets installed need to comply as in a dwelling unit of Section 210-52? Yes, and they need to be located as per those requirements. No, number of outlets is determined by customer preference. Yes, but they can be relocated because of furniture layout. No, that Section does not apply. Reference: 210.60 B 124. 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 6 7 Reference: 210.52, 220.41 125. 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 not required in the unfinished portion. Two additional outlets are required in the unfinished portion. None of these statements are true. An additional outlet is required in the unfinished portion. Reference: 210.52G 126. 020 – Industry Related Residential Version (201029)1In a dwelling unit bathroom, a receptacle is required on the wall next to the sink within… 12 inches. 36 inches. 18 inches. 24 inches. Reference: 210.52D 127. 019 – Industry Related Residential Version (201029)1 In a dwelling unit kitchen where the exception allows a receptacle to be installed below the countertop, to count, the counter lip shall extend no more than ___ beyond the counter. 8 inches. This no longer counts. 12 inches. 10 inches. Reference: 210.52C 3 128. 017 – Industry Related Residential Version (201029)1A GFCI protected 20-amp small appliance branch circuit… May not serve more than one kitchen. May serve more than one kitchen. May serve more than one but it is not recommended. All of these statements are true Reference: 210.52B 3 129. 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 Common pool wiring. Central building security. Parking lot lighting. Reference: 210.25B 130. 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? 10 13 11 12 Reference: Table 210.21B 2 131. 012 – Industry Related Residential Version (201029)1Given, 4 lights at 120 volts at 4.2 amps each on for over 3 hours at a time. How many minimum 20-amp circuits are needed to serve this load? 1 4 3 2 Reference: 210.20A 132. 011 – Industry Related Residential Version (201029)1In a dwelling unit bathroom… 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. All of these statements are true. At least one 20-amp circuit is required, this 20-amp circuit shall be dedicated to supply bathroom receptacles only. Reference: 210.11C 133. 010 – Industry Related Residential Version (201029)1In a dwelling unit, the washing machine shall _____. Both 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. None of these statements are true be installed on a separate 20-amp circuit. Reference: 210.11C 134. 008 – Industry Related Residential Version (201029)1In a dwelling garage, a non-GFCI outlet installed for a Central Vacuum system shall be… Now not allowed, it must be GFCI protected. Installed at least 7' above the floor. A duplex receptacle. Marked "not GFCI protected. Reference: 210.8A 135. 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 15-amp, it shall not be GFCI protected. If this receptacle is 15 or 20 amp, it shall be GFCI protected If this receptacle is 20-amp, it shall not be GFCI protected. Reference: 210.8A 136. 006 – Industry Related Residential Version (201029)1A multiwire branch circuit for a hot water tank using a line-to-line load requires… Two single pole breakers with an approved handle tie. A double pole circuit breaker. None of these statements are true Both of these statements are true Reference: 240.15B, 210.4B 137. 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 does not have to be re-identified. The white conductor must be permanently re-identified where visible. Reference: 200.7C 138. 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. 10 6.5 25 15 Reference: 110.26A 3 139. 002 – Industry Related Residential Version (201029)1When the term “In sight from” is used in the Code, what is the maximum distance permitted? 75 feet. 30 feet. 25 feet. 50 feet. Reference: Definitions 140. 001 – Industry Related Residential Version (201029)1An area is considered a bathroom if… It includes a sink and a tub. All of these statements are true It includes a sink and a shower. It includes a sink and a toilet. Reference: Definitions Back Save Progress Retry Finish