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. 2 3 No separation is needed. 1 Reference: 800.133B 2. 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. may be installed in the same J box None of these statements are true may be run outside adjacent to the J box to provide separation Reference: 725.136A&B 3. 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. None of these statements are true #8 AWG solid CU #8 AWG stranded CU #6 AWG stranded CU Reference: 680.74 4. 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 ___________. is installed in a raceway only complies with Part I and II of Article 680 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 Reference: 680.43 5. 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. None of these statements are true 12, 5 14, 5 7 feet, 5 feet Reference: 680.43B 1 6. 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 a multifamily structure. For single-family dwelling unit. Both A and B above are true statements. Reference: 680.41 7. 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. Both of these statements are true None of these statements are true The 120 volt branch circuit (not required to be GFCI protected) used for outside lights. Reference: 680.23F 3 8. 191 – Industry Related Residential Version (201029)1Which of the below is a true statement? 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. All of these statements are true Reference: 680.22A, 680.43A 9. 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. 10, 15, 6.5 6, 20, 6.5 10, 20, 10 5, 10, 2005 Reference: 680.22A 1 10. 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. Rigid Nonmetalic Conduit (PVC, RNC) Type MC cable listed for the location All of these Chapter 3 methods are allowed NM cable (Romex) Reference: 680.21 A2 11. 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. 10 27 25 22.5 Reference: Table 680.9A 12. 186 – Industry Related Residential Version (201029)1Mobile home disconnecting means shall be located not less than _____ feet above finished grade. 5 3 4 2 Reference: 550.32F 13. 185 – Industry Related Residential Version (201029)1The minimum size service for a mobile home in a mobile home park is _____ amperes. 100 200 150 80 Reference: 550.32C 14. 184 – Industry Related Residential Version (201029)1Electric ranges and clothes dryers used in mobile homes shall be ___________. installed with the grounded circuit conductor insulated from the grounding conductor and the metal equipment enclosures installed with the metal equipment enclosure junction box isolated installed with the grounding conductor and the neutral bonded together installed like in all existing dwelling units Reference: 550.16A, 250.104 15. 182 – Industry Related Residential Version (201029)1The length of a supply cord to a 120-volt rated room air-conditioner shall not exceed _____ feet. 6 4 3 10 Reference: 440.64 16. 180 – Industry Related Residential Version (201029)1Electric heat cable with a conductive floor covering installed in a bathroom floor shall _____. be only allowed in commercial structures be limited to 32 volts be prohibited have GFCI protection Reference: 424.44E 17. 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 6 7 5 Reference: 424.4 18. 178 – Industry Related Residential Version (201029)1Given a wall mounted oven is cord and plug connected: For the cord and plug to serve as the unit disconnect, it must be accessible. Having to pull the unit out of the wall first to get access to the plug and cord may not be considered accessible, and additional disconnecting would be required. A pull out drawer in the bottom of the oven could make the cord and plug accessible. All of these statements are true Reference: 422.33B 19. 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. A plug and receptacle are not allowed to serve as a disconnect. None of these statements are true Reference: 422.33 20. 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, 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. No, the disconnect would be impracticable. Reference: 422.31A 21. 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. 100% 125% 80% 50% Reference: 422.11A 22. 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 2 1 3 Reference: 410.68 23. 173 – Industry Related Residential Version (201029)1Which types of luminaries (light fixtures) are permitted in clothes closets? All of these statements are true Recessed incandescents with enclosed lamps. Surface mounted incandescents with enclosed lamps. Surface mounted fluorescents. Reference: 410.16B 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. 2 3 In a clothes closet, the area defined as storage space rises to the ceiling regardless of the ceiling height. 4 Reference: 410.16A Figure 25. 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 5 feet. No, not within 3 feet. No, not within 5 feet and no further than 10 feet and GFCI protected. Reference: 406.9C 26. 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 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. This is allowed if no part of the fixture is within 3 feet horizontally of the tub. Reference: 410.10D 27. 167 – Industry Related Residential Version (201029)1A 20 ampere, 120-volt receptacle installed outdoors and subject to beating rain and water runoff shall have an enclosure that is weatherproof when the attachment plug cap is inserted in ___________. industrial applications residential applications commercial applications All of these statements are true Reference: 406.9A 28. 166 – Industry Related Residential Version (201029)1Receptacles rated _____ amperes or less directly connected to aluminum conductors shall be marked CO/ALR. 30 25 20 40 Reference: 406.3C 29. 165 – Industry Related Residential Version (201029)1Can a circuit breaker be used to switch 277 V fluorescent lighting circuits? Both of these statements are true None of these statements are true Yes, if they are marked HID Yes, if they are marked SWD. Reference: 404.11, 240.83D 30. 164 – Industry Related Residential Version (201029)1Snap switches are required to be grounded ___________. only when installed in a dwelling unit only when a metal coverplate is used whether or not a metal coverplate is installed only when installed in a metal J box Reference: 404.9B 31. 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. 400 250 300 150 Reference: 404.8B 32. 162 – Industry Related Residential Version (201029)1The height of a circuit breaker used as a switch shall not exceed _____ above the floor. 5 feet 6 feet 4.5 feet 6 feet, 7 inches Reference: 404.8A 33. 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 34. 160 – Industry Related Residential Version (201029)1Flexible cord cannot be used as the ___________ wiring of a structure. Both of these statements are true temporary None of these statements are true permanent Reference: 400.12 35. 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 grey colored conduit Two of these statements are true, the NEC is not clear on this. orange colored conduit Reference: 352.6 352.10 36. 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. 8 inches 7 inches What’s shown in Table 2, Chapter 9 10 inches Reference: 352.24 37. 156 – Industry Related Residential Version (201029)1Power conductors in type NMC cable are manufactured in copper sizes ___________. #14-#6 #14-#2 #12-#2 #14-#4 Reference: 334.104 38. 154 – Industry Related Residential Version (201029)1The overall covering for type NMC cable shall be ___________. All of these statements are true moisture resistant flame retardant corrosion resistent Reference: 334.116B 39. 153 – Industry Related Residential Version (201029)1 NMB cable (romex) is required to be protected from physical damage when exposed. When run across the top of the truss joists in an accessible attic, the cable shall be protected by guard strips. 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 Reference: 334.15B, 23 40. 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 ___________. None of these statements are true a dental facility one-family commercial Reference: 334.12A 41. 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. An outlet box cannot be used as support of the fixture. The fixture be independently supported unless the box is listed over 50 pounds. None of these statements are true Reference: 314.27A 42. 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. 36 18 30 24 Reference: 314.23F 43. 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. 1/8 1/2 0 1/4 Reference: 314.20 44. 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. 110 100 115 85 Reference: Table 310.16 45. 146 – Industry Related Residential Version (201029)1A 400 amp, single phase, 120/240 Volt parallel run could be composed of _____. 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 2, 3/0 copper conductors in parallel for A phase and 2, 250 KCMIL aluminum conductors in parallel for B phase Reference: 310.10G 46. 144 – Industry Related Residential Version (201029)1NMB (romex) cable is installed in a standard 2 x 4 inch plastic nail-on junction box. The measurement of free conductor length in this junction box is taken from the back of the box where conductors emerge from the sheath. All of these statements are true Equipment grounding conductors are also required to meet this free conductor length requirement. A minimum of 6 inches of free conductor length is required for make-up and/or connection to devices. Reference: 300.14 47. 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. 18 12 24 6 Reference: Table 300.5 48. 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? 18 inches The code is not really clear on this one, 24 inches is allowed. 6 inches 0 inches Reference: Table 300.5 49. 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 50. 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 None of these statements are true #6 CU Reference: Tab. 250.66, 64 51. 135 – Industry Related Residential Version (201029)1The grounding electrode conductor generally shall be installed without a splice, but ___________. A split bolt can be used. An irreversible compression connector can be used. A 2-barrel lug can be used. None of these statements are true Reference: 250.64C 52. 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 _____. #6 AWG CU #6 AWG AL #4 AWG CU #4 AWG AL Reference: 250.64F 53. 133 – Industry Related Residential Version (201029)1A structure has 2 separate services supplying the building. Only one service would require a separate grounding electrode system. More than one service on a structure is never allowed. 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 54. 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? Rods are not allowed as supplementary electrodes. 2 None of these statements are true 1 Reference: 250.54 55. 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? 2 1 (Resistance to ground is more than 25 ohms) 0 Rods are not allowed to supplement the piping system. Reference: 250.53 56. 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 0 The supplementary rod is recommended only. Reference: 250.53D 2 57. 127 – Industry Related Residential Version (201029)1If the allowable current carrying capacity of a conductor does not correspond to the rating of a standard size overcurrent device, the next larger size may be used provided the current does not exceed _____ amps. 600 400 800 1000 Reference: 240.4B 58. 126 – Industry Related Residential Version (201029)1For a single family dwelling, the minimum size service disconnecting means shall be _____ amperes. 60 125 75 100 Reference: 230.79C 59. 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. 6 3 8 4 Reference: 230.9A 60. 124 – Industry Related Residential Version (201029)1An outbuilding on residential property is wired with one 20 ampere, 120-volt feeder for lighting and outlets. No disconnecting means is required for this situation. A snap switch is allowed for the required disconnecting means. The required disconnecting means shall be red. The required disconnecting means shall be located near the point of entry. Reference: 225.36 61. 121 – Industry Related Residential Version (201029)1A wall switch in a dwelling unit can be installed ____. Inside the room it serves None of these statements are true Both of these statements are true Outside the room it serves Reference: 210.70A 62. 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 63. 119 – Industry Related Residential Version (201029)1A dwelling unit dining room has a receptacle controlled by a wall switch instead of a lighting outlet. Both A and B above are true statements. 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 This is allowed when the switch is supplied by the small appliance branch circuit required to serve this room. Reference: 210.70, 52B 1 64. 118 – Industry Related Residential Version (201029)1A homeowner wants an occupancy sensor installed in his home office for lighting. This is allowed for one mounted on the ceiling if a wall switch is also installed. None of these statements are true Both of these statements are true 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. Reference: 210.70A 1 65. 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. 50 25 10 30 Reference: 210.63 66. 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 must be marked to indicate this dual usage. This receptacle outlet can serve as the required outlet for 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 does not have to be GFCI protected. Reference: 210.63 67. 115 – Industry Related Residential Version (201029)1A receptacle outlet must be installed at an accessible location for servicing rooftop heat pump equipment in ___________. All of these statements are true one family dwellings commercial buildings two family dwellings Reference: 210.63 68. 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 36 inches of the wall within 24 inches of the wall within 18 inches of the wall within 12 inches of the wall Reference: 210.52A 3 69. 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. 5.5. 4.5 4 6 Reference: 210.52 70. 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. 48 18 36 24 Reference: 210.52D 71. 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. 50 100 80 70 Reference: 210.23B1 72. 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 50 80 Reference: 210.19C 73. 106 – Industry Related Residential Version (201029)1 Dwelling unit receptacle outlets shall be protected by arc-fault circuit interrupter protection ___________. even for bathroom receptacles. even for outside receptacles. None of these statements are true Even for sunroom receptacles. Reference: 210.12B 74. 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 not allowed by code. A 15-ampere branch circuit is also allowed. None of these statements are true This is allowed. Reference: 210.11C 3 ex 75. 104 – Industry Related Residential Version (201029)1 Does a duplex receptacle installed in a dwelling type occupancy for the refrigerator require GFCI protection? 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. Yes, all kitchen receptacles No, never Reference: 210.8A 6 76. 103 – Industry Related Residential Version (201029)1In a dwelling unit, a multiwire branch circuit supplying a split-wired receptacle is required to ___________. have at least 2 neutrals. have a separate neutral for each ungrounded conductor. have a provision at the source to simultaneously disconnect all ungrounded conductors. have color coded wires to help identify. Reference: 210.4B 77. 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 or HACR circuit breaker, the breaker does not have to be a HACR type if no fuses are used. 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, the circuit breaker does have to be a HACR type Reference: 110.3B 78. 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 The run prevents water from entering the enclosure. Flexible metal conduit cannot be used in a wet location. The branch circuit conductors are rated for a wet location. Reference: 348.12 79. 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. Single. No allowance is needed for devices. Double. Reference: 314.16B 4 80. 094 – Industry Related Residential Version (201029)1A hydromassage bathtub… Requires motor be accessible without damaging the building. Requires metal piping system associated with the tub shall be bonded to the electrical equipment (motor). All of the statements are true. Requires all 125-volt receptacles within 6 feet be GFCI protected. Reference: 680.71, 73, 74 81. 093 – Industry Related Residential Version (201029)1Which shall have ground fault circuit interrupter protection? All of the installations require GFCI protection. An outdoor fountain. An indoor hot tub supplied by an outlet. A hydromassage bathtub. Reference: 680.43, 56A, 71 82. 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. All of these statements are true Within sight of the tub. At least 5 feet away. Reference: 680.41 83. 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 except for dwelling units. Does not require GFCI protection. Requires GFCI protection if 15 to 20-amp three phase only. Requires GFCI protection. Reference: 680.22A 84. 086 – Industry Related Residential Version (201029)1What is the minimum mounting height of an outdoor mobile home disconnect? 3 feet from the bottom of the enclosure to finish grade. 2 feet from the bottom of the enclosure to finish grade. 4 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 85. 082 – Industry Related Residential Version (201029)1As a general rule, the disconnecting means for air conditioning equipment shall… Be readily accessible from the unit. Be within sight from the unit. Can be installed on the unit. All of these statements are true Reference: 440.14 86. 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, 11 amps. No, 15 amps. Yes, 12.55 amps. Yes, 13 amps. Reference: 430.24 87. 080 – Industry Related Residential Version (201029)1Baseboard heaters… Generally are not allowed to be installed below a receptacle outlet as per the manufacturers instructions. May be installed below receptacle outlets. May be installed below receptacle outlets if over 15 ft. long. May be installed below receptacle outlets if over 12 ft. long. Reference: 424.10 notes 88. 079 – Industry Related Residential Version (201029)1If a typical residential hot water tank is connected… All of these statements are true A lockable disconnect can be used. A circuit breaker within sight of the hot water tank can be used as a disconnect. A circuit breaker capable of being locked in the open position can be used as a disconnect. Reference: 422.31B 89. 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 vending machine. An attended portable drill motor with a 30 ampere, 250 volt receptacle. A RV plugged in for six months. A pump motor. Reference: 406.9A 90. 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. None of these statements are true Yes, and it must be GFCI protected. Reference: 406.4D 91. 070 – Industry Related Residential Version (201029)1As a general rule, a new installation of a snap switch…. Is not required to be grounded. Requires a 20-amp rated switch minimum. Requires it to be grounded whether or not a metal faceplate is installed. Requires it to be grounded if a job specification recommends it. Reference: 404.9B 92. 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. 7 inches. 6 ft. 8 inches. 6 ft. 6 ft. 6 inches. Reference: 404.8 93. 065 – Industry Related Residential Version (201029)12-inch Rigid Nonmetallic Conduit (RNC or PVC) shall be supported at least every… 8 ft. 6 ft. 5 ft. 10 ft. Reference: 352.30B 94. 064 – Industry Related Residential Version (201029)1Flexible Metal Conduit (FMC or Flex) may have up to ____ quarter bends per run. 6 3 4 5 Reference: 348.24B 95. 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. None of these statements are true 50, 75 degree C. 55, 90 degree C. Reference: 334.80, Table 310.16 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. 5 6 7 3 Reference: 334.23 97. 060 – Industry Related Residential Version (201029)1Where Nonmetallic-Sheathed Cable (romex) passes through a floor, it shall be protected by a conduit at least ___ inches above the floor. 5 6 4 8 Reference: 334.15B 98. 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. All of these statements are true 3 floors above grade 4 floors but the 1st level is a parking garage 3 floors above grade, with a basement 40% above grade Reference: 334.10 99. 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” None of these statements are true This conduit can be 20 feet in length. Nonmetallic-Sheathed Cable (romex) is allowed to be installed in this raceway. This conduit shall not be less than 12 inches in length. Reference: 312.5C 100. 056 – Industry Related Residential Version (201029)1On a single phase, 225 amp dwelling service, the minimum ungrounded (hot) conductor size is… 300 Kcmil Aluminum. 83% of the service rating. 2/0 Copper. 4/0 Copper. 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 18 36 24 Reference: 310.15C 1 102. 054 – Industry Related Residential Version (201029)1Nonmetallic Sheathed Cable (romex) installed in a residential dwelling unit… Both of these statements are true Can be installed perpendicular to the long dimension of an air handling space. Cannot be installed in the long dimension of an air handling space. None of these statements are true Reference: 300.22C_ex 103. 052 – Industry Related Residential Version (201029)1Raceways exposed to different temperatures… Need not be sealed and needs not to be prevented. Need to be sealed in commercial applications only. Need to be sealed when exposed to widely different temperatures. Need to be sealed to prevent air exchange and circulation. Reference: 300.7 104. 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 3 105. 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 only for field-punched holes. A bushing or grommet is required in the opening. A bushing or grommet is required only for factory cut holes. Reference: 300.4B 1 106. 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 107. 045 – Industry Related Residential Version (201029)1Which is a true statement? 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. 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. Reference: 250.64E 108. 044 – Industry Related Residential Version (201029)1If a made electrode (ground rod) is to be used to ground a service…. All of these statements are true 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. 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. 10, 20 feet 10, anywhere 5, 10 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… An equipment-grounding conductor is not ran. Both of these statements are true None of these statements are true There are not metal pipes or other continuous metal paths between the buildings. Reference: 250.32B ex 111. 039 – Industry Related Residential Version (201029)1Conductors for a feeder where the ampere rating does not match with a standard circuit breaker… Must be used with a breaker the next lower standard size. Can be used with the next higher standard breaker size if it is under 800 amps. Can be used with the next higher standard breaker size. All of these statements are true Reference: 240.4B 112. 038 – Industry Related Residential Version (201029)1The minimum service entrance conductor ampacity is… 30 amps for a two-circuit installation. 60 amps for other loads. All of these statements are true 100 amps for a one family dwelling. Reference: 230.79 113. 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. Shall be below the point of attachment of the service drop. Can be both above or below within 30 inches of the attachment of the service drop. Reference: 230.54C 114. 035 – Industry Related Residential Version (201029)1Service entrance conductors… Cannot be spliced unless the authority having jurisdiction gives express permission. None of these statements are true Cannot be spliced. Can be spliced. Reference: 230.46 115. 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 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 Reference: 230.40 ex 3 116. 033 – Industry Related Residential Version (201029)1Service-drops not over 600 volts require… 18 ft. of clearance over parking areas. All of these statements are true 10 ft. of clearance over residential property driveways. 8 ft. of clearance over sidewalks. Reference: 230.24B 117. 032 – Industry Related Residential Version (201029)1Open service conductors installed on buildings require… 4 feet minimum clearance from windows if they can be opened. 4 feet minimum clearance from windows. 3 feet minimum clearance from windows if they can be opened. 3 feet minimum clearance from windows. Reference: 230.9A 118. 030 – Industry Related Residential Version (201029)1Which is not a true statement of an outside feeder from one building to another? Building #2 is limited to 8 disconnects grouped in one location. If building #2 is supplied by more than one feeder, permanent identification is required. The disconnect in (A) above must be suitable for use as service equipment. A disconnect is required at building #2. Reference: 225.31, 36, 37 119. 029 – Industry Related Residential Version (201029)1A dwelling lighting load demand factor is ____ % for 3001 to 120,000 watts. 35 40 50 25 Reference: Table 220.45 120. 027 – Industry Related Residential Version (201029)1 A required dwelling unit wall light switch for a room… Has no specific location requirement, just near an entrance. Is required within 5 feet of a doorway. Is required within 6 feet of a doorway. Is required within 4 feet of a doorway. Reference: 210.70A 121. 026 – Industry Related Residential Version (201029)1An air conditioner… Requires an outlet if it is a 2 family dwelling. Requires an outlet within 25 Ft. All of these statements are true. Requires an outlet on the same level for servicing it. Reference: 210.63 122. 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. Yes, but they can be relocated because of furniture layout. No, number of outlets is determined by customer preference. No, that Section does not apply. Reference: 210.60 B 123. 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 6 5 7 Reference: 210.52, 220.41 124. 022 – Industry Related Residential Version (201029)1For a one family dwelling where part of the basement is finished but another portion is not…. Two additional outlets are required in the unfinished portion. An additional outlet is required in the unfinished portion. None of these statements are true. An additional outlet is not required in the unfinished portion. Reference: 210.52G 125. 021 – Industry Related Residential Version (201029)1Two family dwellings (duplex) require how many grade level accessible outside receptacles? 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. None are required. One for both units. Reference: 210.52E 126. 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. 10 inches. 12 inches. This no longer counts. 8 inches. Reference: 210.52C 3 127. 018 – Industry Related Residential Version (201029)1The two or more required kitchen 20-amp appliance circuits can include… A clock in the breakfast room. Pantry receptacles. All of these statements are true. Dining room receptacles. Reference: 210.52B 1&2 128. 016 – Industry Related Residential Version (201029)1A dwelling unit small appliance branch circuit for the kitchen cannot… Include an outside outlet. All of these statements are true Include a receptacle for a refrigerator. Include a receptacle for a gas fired range. Reference: 210.52B 2 129. 014 – Industry Related Residential Version (201029)1On a multi-family structure, which loads are permitted to be supplied from a dwelling unit? Central building security. None of these statements are true Common pool wiring. 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? 12 11 10 13 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? 2 1 4 3 Reference: 210.20A 132. 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 133. 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. Workbench outlet in a garage. All of these require GFCI protection. One duplex receptacle for a freezer in a garage. Reference: 210.8A 134. 008 – Industry Related Residential Version (201029)1In a dwelling garage, a non-GFCI outlet installed for a Central Vacuum system shall be… A duplex receptacle. Installed at least 7' above the floor. Marked "not GFCI protected. Now not allowed, it must be 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. 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. 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. 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… None of these statements are true A double pole circuit breaker. Both of these statements are true Two single pole breakers with an approved handle tie. 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. The white conductor does not have to be re-identified. The white conductor must be permanently re-identified where visible. None of these statements are true The white conductor shall be white with a colored green stripe. Reference: 200.7C 138. 004 – Industry Related Residential Version (201029)1A neutral conductor sizes ____ or smaller shall be identified by continuous gray or white insulation. #10. #6. #4. #8. Reference: 200.6A 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. 25 6.5 15 10 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? 30 feet. 50 feet. 75 feet. 25 feet. Reference: Definitions Back Save Progress Retry Finish