Common Codes Corrections 201029 -2026 Quiz Please sign up for the before taking this quiz. Back Save Progress Retry Finish 1. 99-Common Codes Corrections 2010291All hazardous locations shall be documented and this documentation shall be available ________. To the inspector To the public To the employees To the general contractor 500.4 2. 98-Common Codes Corrections 2010291Dry-type transformers 600 volts or less and not exceeding ________ can be located in hollow spaces of buildings, such as above a dropped ceiling. 50 KVA 125 KVA 100 KVA 75 KVA 450.15 B 3. 97-Common Codes Corrections 2010291Is a 480-volt, dry-type transformer considered to be accessible where the transformer is located on a platform 8 feet above the floor? Yes No 450.15 A 4. 96-Common Codes Corrections 2010291The disconnecting means for an outside air conditioner can be located ______. All of these are allowed On the unit Within the unit Next to the unit 440.14 5. 95-Common Codes Corrections 2010291The disconnecting means for an outside air conditioner can be located ______. Outside Inside the structure Outside the structure All of these are allowed 440.14 6. 94-Common Codes Corrections 2010291A 240-volt, ¾-horsepower, single-phase AC motor has a full load current of ________. 6.9 amperes 4.9 amperes 7.6 amperes 8 amperes Table 430.248 7. 93-Common Codes Corrections 2010291As a general rule, a disconnecting means shall always be located within sight from the motor. An example of an exception to that rule is ________. The controller disconnect is used and it's lockable in accordance with 110.254 where such a location of the disconnecting means for the motor is impractical or introduce an additional or increased hazards to personal property Space limitations A commercial application A small 20-horsepower motor 430.102 B, Exception to 1 and 2 & info note no.1 8. 92-Common Codes Corrections 2010291Ground fault circuit interrupter (GFCI) protection shall be required for electrically heated floors in ________. Bathrooms Laundry rooms Clothes closets Any room 424.44 E 9. 91-Common Codes Corrections 2010291The nameplate of an AC unit shall be located so as to be ________ after installation. Visible or easily accessible Within sight Within 30 feet Available 424.28 B 10. 90-Common Codes Corrections 2010291The thermostatically controlled baseboard heater can serve as the disconnecting means only if ________. It opens all ungrounded conductors and has an off position It is marked It is identified It is readily accessible by the panel 424.20 A 11. 9-Common Codes Corrections 2010291When the voltage to ground does not exceed 150 volts, sufficient working space around electrical equipment shall include a minimum height of ______ for this workspace. 6 1/2 feet 5 feet 6 feet 7 feet 110.26 A 3 12. 89-Common Codes Corrections 2010291All fixed electric space heating equipment is considered a(n) ________ load. Continuous (125%) Light-duty Intermittent-duty Non-continuous 424.6 13. 88-Common Codes Corrections 2010291All appliances operating at ________ or more shall now be listed. 50 volts 12 volts 24 volts 32 volts 422.2 14. 87-Common Codes Corrections 2010291For the branch circuit overcurrent device (circuit breaker) to be allowed to also serve as an appliance disconnecting means, the appliance cannot be any larger than ________. 1/8 horsepower 1/4 horsepower 1/3 horsepower 1 horsepower 422.31 A 15. 86-Common Codes Corrections 2010291For a hot water tank appliance rated over 300 watts, the required disconnecting means ________. Can be a circuit breaker Can be a circuit breaker in another room Shall be a unit switch Shall be lockable 422.31 B 16. 85-Common Codes Corrections 2010291Does the NEC permit the installation of a built-in, cord-and-plug-connected microwave oven and cord-and-plug-connected range hood exhaust fan on the same 20-ampere branch circuit? No Yes 422.16 B (4) 17. 84-Common Codes Corrections 2010291A range hood is allowed to be cord-and-plug connected as long as the cord is not shorter than _______. 18 inches 24 inches 36 inches 48 inches 422.16 B 4 18. 83-Common Codes Corrections 2010291A garbage disposal is allowed to be cord-and-plug connected as long as the cord is no longer than ________. 36 inches 18 inches 24 inches 48 inches 422.16 B 19. 82-Common Codes Corrections 2010291A fixed storage-type water heater that has a capacity of 120 gallons or less is considered a ________ load. Continuous (125%) Large Small Constant 422.13 20. 81-Common Codes Corrections 2010291In addition to the required branch circuits installed in a home for general lighting and outlets, ______. One individual circuit is required for the central heating One individual circuit is required for the smoke detectors One individual circuit is required for the outside outlets All of these are true statements. 422.12 21. 80-Common Codes Corrections 2010291If an individual circuit is run for a non-motor operated appliance that is continuously loaded, the branch circuit rating must be sized no less than ________ of the marked ampere rating. 1.25 1.5 1 0.8 422.10 A 3 22. 8-Common Codes Corrections 2010291When the voltage to ground does not exceed 150 volts, sufficient working space around electrical equipment shall be a width of ______ minimum in front of the panel or the width of the panel if it is greater then that. 30 inches 24 inches 36 inches 42 inches 110.26 A 2 23. 79-Common Codes Corrections 2010291Fluorescent luminaires utilizing double-ended lamps and containing ballasts that can be serviced in place shall have a disconnecting means ________. For luminaires in indoor locations other than dwellings That breaks all the supply conductors Located only externally to the luminaire In all applications 410.71 A 24. 78-Common Codes Corrections 2010291If a non-type IC (insulated covering) recessed lighting fixture is installed adjacent to combustible material, it shall be not less than ______ away from it. 1/2 inch 3 inches 2 inches 1 inch 410.116 A 1 25. 77-Common Codes Corrections 2010291Cord connected fluorescent fixtures are permitted when ________. All of these are true statements. The cord is visible for the entire length The cord is not subject to strain The cord is terminated in a grounding-type plug cap 410.62 C 1 26. 76-Common Codes Corrections 2010291________ conductors shall be used for wiring on luminaire chains and on other movable parts. Stranded Only copper Only aluminum Solid 410.56 D 27. 75-Common Codes Corrections 2010291Outdoor luminaires ________ permitted to be supported by trees. Shall be Shall not be Are never May not be 410.36 G 28. 74-Common Codes Corrections 2010291Framing members of suspended ceiling systems used to support luminaires can be securely fastened to each other with ________. All of these are true. Rivets Screws Bolts 410.36B 29. 73-Common Codes Corrections 2010291An electric-discharge light fixture (fluorescent) is surface mounted over a junction box that does not support the fixture. This is allowed if the opening in the fixture provides access to the box.( suitable opening ) This is now not allowed. The junction box is still considered accessible. The location of the junction box must be identified. 410.24 B 30. 72-Common Codes Corrections 2010291Branch-circuit wiring other than the circuit supplying the luminaire is not permitted to pass through the luminaire unless it is identified for ________. Through-wiring 90 degree conductors 75 degree conductors Drop ceilings 410.21 31. 71-Common Codes Corrections 2010291A light fixture is installed in a clothes closet. It is required to have a minimum of ________ for clearance from the defined space. 6 inches (for fluorescent fixtures) 6 inches (for surface incandescent fixtures) 18 inches (for surface incandescent fixtures) 12 inches (for recessed incandescent fixtures) 410.16 D 2 32. 70-Common Codes Corrections 2010291Does the National Electrical Code (NEC) permit surface-mounted exposed incandescent luminaires with spiral-type fluorescent lamps in a clothes closet? No. Yes 410.16 B 33. 7-Common Codes Corrections 2010291When the voltage to ground does not exceed 150 volts, sufficient working space around electrical equipment shall be a depth of ______ minimum in front of the panel. 3 feet 2 feet 2 1/2 feet 3 1/2 feet Table 110.26 (A)1 34. 69-Common Codes Corrections 2010291Incandescent light fixtures installed in a clothes closet shall be a ________ type. A totally-enclosed light source The open lamp The partially-enclosed lamp The pendant 410.16 A B 35. 68-Common Codes Corrections 2010291As a general rule, ________ grounded neutral conductor(s) can terminate on a terminal within a panelboard. Only 1 individual Up to 2 No more than 2 No more than 3 408.41 36. 67-Common Codes Corrections 2010291If an electrical panelboard frame is metal and it is used with nonmetallic conduit, ________. An equipment grounding conductor is required An equipment grounding conductor is not required An equipment grounding conductor is required by fine print note 408.4 37. 66-Common Codes Corrections 2010291When back feeding an overcurrent protection device such as a circuit breaker for a sub-panel feeder, ________. An additional fastener that requires other than a pull to release. An additional fastener is recommended An additional fastener is not required A plack label warning is required 408.36 D 38. 65-Common Codes Corrections 2010291________ shall be required to be legibly identified as to the purpose of use on the electrical panel. All circuits and modifications Only 240-volt circuits Only 120-volt circuits Only modifications 408.4 A 39. 64-Common Codes Corrections 2010291Receptacles shall not be installed inside or _______ above bathtub or shower stall. Directly over up to 8 feet Within 40 inches Within 42 inches Within 50 inches 406.9 C 40. 63-Common Codes Corrections 2010291A 20-ampere, 125-volt and 250 volt, non-locking receptacle shall be a listed weather-resistant type ________. Two of these are true. If installed outside If installed outside under a roof 406.9 A 1 41. 62-Common Codes Corrections 2010291As a general rule, receptacles mounted to and supported by a cover shall be held rigidly against the cover with ________. More than one screw At least one screw 3 screws 4 screws 406.14 C 42. 61-Common Codes Corrections 2010291A new installation of 120-volt, 20-ampere receptacle outlets ________. shall be of the grounding type Shall be general-purpose only in commercial structures Shall be general-purpose only in residential structures can be of the non-grounding type 406.12 D 1 43. 60-Common Codes Corrections 2010291New installations of snap switches ________ be effectively grounded. shall can may May not 406.40 B 44. 6-Common Codes Corrections 2010291When installing a wire termination with one copper and one aluminum conductor in the same lug, ______. The lug must be rated for the purpose and condition of use The termination shall be marked for potential overheating The termination shall be labeled for potential overheating The lug must be copper 110.14 45. 59-Common Codes Corrections 2010291The voltage between adjacent switches and receptacles without barriers shall not exceed ________. 300 volts 150 volts 200 volts 250 volts 406.14 J, 406.38 B 46. 58-Common Codes Corrections 2010291As a general rule, all switches shall be installed such that the center of the grip is not more than ________ above the floor or working platform. 6 feet 7 inches 6 feet 7 feet 7 feet 6 inches 404.10 A 2 47. 57-Common Codes Corrections 2010291How close can a switch be located next to a shower or hydro-massage bathtub? ( Switches must not be located within the footprint or directly above the shower opening, where they could be subject to spray or moisture. The intent is to keep switches at least 3ft horizontally from the shower opening unless they are listed for wet locations But I don’t see an exact measurement of 3 feet for a switch anywhere maybe change in the 2029 code ? we’ll see .) This aligns with the same moisture‑protection logic used for luminaires and receptacles in 410.10(D) and 406.9(C). Next to 3 feet 5 feet 7 feet 404.6 C 48. 56-Common Codes Corrections 2010291Flexible cords shall be permitted to be used ________. For wiring of luminaires As a substitute for the fixed wiring of a structure When concealed by ceilings Where subject to physical damage 400.1 49. 55-Common Codes Corrections 2010291What is the time limit for use of a flexible cord (extension cord) when it is used in a commercial building? There is no specific time limit 30 days 60 days 90 days 400.12 50. 54-Common Codes Corrections 2010291A 1/0 AWG copper single conductor (column D) type W entertainment cable with 75° C terminations is rated at ________. 230 amperes 195 amperes 207 amperes 181 amperes Table 400.5 A 1 51. 53-Common Codes Corrections 2010291A #2 AWG copper 2 conductor type SJO cord is rated at ________. 95 amperes 60 amperes 70 amperes 80 amperes Table 400.5 A 1 52. 52-Common Codes Corrections 2010291Type SJO cord is rated for 300 volts and is allowed in ________. Damp locations Damp and wet locations For extra hard usage For dry locations only Table 400.4 53. 51-Common Codes Corrections 2010291Electrical Nometallic Tubing (ENT, Smurf Table) can be supported by openings in framing member studs on horizontal runs if they are not exceeding ________. 3 feet 2 feet 18 inches 12 inches 362.30 B 54. 50-Common Codes Corrections 2010291Conduits & raceways ______ be provided with expansion fittings where necessary to compensate for thermal expansion and contraction. shall may can must not 300.9 B 55. 5-Common Codes Corrections 2010291When a piece of electrical equipment has a damaged part, ______, Damaged internal parts are not allowed It needs to be marked It shall be noted in the specifications It shall be identified as a potential problem 110.12 B 56. 49-Common Codes Corrections 2010291If a conduit or raceway is installed from a cold location to a warm location so that moisture may contact live parts, the conduit must be ______ at either or both ends. sealed blocked marked raised 300.9 A 57. 48-Common Codes Corrections 2010291What is the minimum cover requirement for a direct burial type UF cable that is installed outdoors that supplies a 24 volt landscape lighting system? 6 inches 18 inches 24 inches 36 inches Table 300.7 A 58. 47-Common Codes Corrections 2010291What is the minimum cover requirement for a nonmetallic conduit that is installed outdoors that supplies a 120 volt, 30 ampere circuit? 18 inches 12 inches 24 inches 36 inches Table 300.7 A 59. 46-Common Codes Corrections 2010291What is the minimum cover requirement for a direct burial type UF cable that is installed outdoors that supplies a 120 volt, 30 ampere circuit? 24 inches 12 inches 18 inches 36 inches Table 300.7 A 60. 45-Common Codes Corrections 2010291A direct burial underground service lateral shall have the location identified by a warning ribbon placed in the trench at least ______ inches above the wire. 12 3 6 18 300.7 D 3 61. 44-Common Codes Corrections 2010291Conductors emerging from an underground installation shall be protected by a raceway to at least ______ inches below grade of the minimum cover requirement. 18 6 12 24 300.7 D 1 62. 43-Common Codes Corrections 2010291Generally, when a raceway contains an ungrounded (hot) conductor of ______ or larger, a bushing is required at the end of the conduit when it enters the box enclosure. 4 AWG 2 AWG 1 AWG 2/0 AWG 300.6 G 63. 42-Common Codes Corrections 2010291When cables are installed through bored holes in wood framing members, the edge of the hole shall not be less than ______ inch(es) from the nearest edge of the wood unless a nail plate is used. 1.25 ¾ 1 1.5 300.6 A 1 64. 41-Common Codes Corrections 2010291As a general rule, cables laid in a wood notch would require protection from nails or screws by using a metal nail plate at least ______ inch thick. 42370 46235 46113 46237 300.6 A 2 65. 40-Common Codes Corrections 2010291All conductors of the same circuit shall ______. Be contained in the same raceway 300.5 B 66. 4-Common Codes Corrections 2010291When an electrical box is used, any unused openings shall ______. Be effectively closed Be labeled Be marked Have the entire box replaced 110.12 A 67. 39-Common Codes Corrections 2010291All electrical raceways, enclosures, and equipment ______ be connected to an equipment grounding conductor . shall should may can 250.134 68. 38-Common Codes Corrections 2010291The size of the bonding jumper shall not be less than ______ when the size of the largest service entrance conductor is 500 KCMIL AWG copper (not paralleled) 1/0 copper 1/0 aluminum 2/0 copper 3/0 copper Table 250.102 C 69. 37-Common Codes Corrections 2010291If the rating of a circuit breaker ahead of a branch circuit is 100 amperes, the minimum size equipment grounding conductor would be a ______ AWG aluminum wire. 6 10 8 4 Table 250.122 70. 36-Common Codes Corrections 2010291If the rating of a circuit breaker ahead of a branch circuit is 100 amperes, the minimum size equipment grounding conductor would be a ______ AWG copper wire. 8 10 6 4 Table 250.122 71. 35-Common Codes Corrections 2010291As a general rule, equipment grounding conductors are not required to be larger than the circuit conductors supplying the equipment. When conductors are increased in size because of a long run and voltage drop concerns, ______. The equipment ground shall be increased proportionately The equipment ground can remain the same size The equipment ground shall be increased by 2 sizes The equipment ground shall be increased by 3 sizes table 250.122 note 72. 34-Common Codes Corrections 2010291Equipment grounding conductors larger than 4 AWG shall be identified ______. at each end and every point where the conductor is accessible only by a green color with yellow strips only by a green outer finish along it's entire length only by stripping off any insulation 250.119 73. 33-Common Codes Corrections 2010291An equipment grounding conductor shall be run with or enclosed with the circuit conductors. ______ is considered a type of equipment grounding conductor. Electrical Metallic Tubing (EMT) a 10 foot section of listed Flexible Metal Conduit a 16 foot section of listed Liquidtight Flexible Metal Conduit A 10 foot section of listed Nonmetallic Flexible Conduit 250.118 74. 32-Common Codes Corrections 2010291When a lightning protection system is installed, ______. it shall be bonded to the building electrode system it shall never be bonded to the building electrode system it shall be bonded to the building electrode system if it is within 5 feet it shall be bonded to the building electrode system if it is within 10 feet 250.106 75. 31-Common Codes Corrections 2010291If a structure has an interior metal water piping system or any other metal piping system that may become energized ______. It shall be bonded to the service equipment It shall be completely isolated from the electrical system It shall be connected to earth to create an electrode It can not be exposed 250.104 76. 30-Common Codes Corrections 2010291The grounding electrode conductor in this case is to 2 ground rods that are 6 feet apart. As a general rule this wire ______. Shall not be spliced Shall be aluminum Shall be insulated can only be a solid wire 250.64 C 77. 3-Common Codes Corrections 2010291Listed electrical equipment when installed shall ______. Be installed in accordance with any instructions included in the listing Be installed as per any inspector's recommendations Be installed in accordance with normal practices Be installed in accordance with anyone's instructions 110.3 B 78. 29-Common Codes Corrections 2010291Generally, if a metal underground water pipe is allowed and used to interconnect grounding electrodes, the grounding electrode conductor shall be connected to it ______. Within 5 feet from the point of entrance into the structure At any point inside the structure Within 12 feet from the point of entrance into the structure Within 25 feet from the point of entrance into the structure 250.68 C 79. 28-Common Codes Corrections 2010291A main bonding jumper or a green bonding screw provided with the panel shall be installed in a service panel ______. For a grounded system to bond the neutral bar to the service enclosure Only if the panel is used as a sub panel Only on an ungrounded system Only if the service conductors and neutrals are paralleled 250.28 80. 27-Common Codes Corrections 2010291A fiberglass manhole that is used to splice underground conductors for a home has a metal cover. This metal lid must be bonded to be part of effective ground fault current path. This metal lid shall be bonded to a ground rod. This metal lid shall be identified as ungrounded. This metal lid is not required to be grounded 250.4 81. 26-Common Codes Corrections 2010291When a circuit breaker handle is operated vertically, ______ shall be the on position. up down the right horizontal 240.81 82. 25-Common Codes Corrections 2010291Electrical panels shall be installed at a readily accessible location and not be located ______. in the vicinity of easily ignitable materials such as clothes closets outside in bedrooms on the second floor of a dwelling unit 240.24 D 83. 24-Common Codes Corrections 2010291The main electrical service disconnect for dwelling units ______. Shall be installed at a readily accessible outdoor location Can only be installed inside the building Can only be installed outside the building Must be installed inside the garage for a new dwelling unit 230.70 A 1 84. 23-Common Codes Corrections 2010291Electrical panels with”Overcurrent protection” OCPD’s shall not be located ______. in bathrooms outside in bedrooms on the second floor of a dwelling unit 240.24 E 85. 22-Common Codes Corrections 2010291When overhead service entrance conductors are exposed to the weather, they shall be raintight _____. And arranged with a drip loop so water can drain And additionally sealed with tape And rated 90 degree C only And rated 75 degree C only 230.54 G 86. 21-Common Codes Corrections 2010291As a general rule, when more than one structure is on the same property, each building can be supplied by ______ feeder(s) from another building. Only 1 2 3 no 230.4 87. 20-Common Codes Corrections 2010291For a dwelling unit at grade level at least one receptacle outlet is required at the front and at the back. To count as this required outlet, it must be accessible and no more than ______ feet above grade. 6.5 6 8 8.5 210.52 88. 2-Common Codes Corrections 2010291When the National Electrical Code (NEC) specifies that electrical equipment shall be in sight from, the equipment shall be no more than ______ distant from the other. 50 feet 20 feet 30 feet 100 feet Article 100 89. 19-Common Codes Corrections 2010291A receptacle outlet is required for a kitchen island counter if it measures ______. a receptacle is not required 18 x 18 inches only 24 x 24 inches only 24 x 36 inches only 210.52 90. 18-Common Codes Corrections 2010291Generally, receptacle outlets in a dwelling unit shall be installed at each kitchen countertop so that no point along the wall line is more that ______ inches from a receptacle outlet. 24 12 30 36 210.52 91. 17-Common Codes Corrections 2010291Generally, receptacle outlets in a dwelling unit shall be installed at each kitchen counter space ______ inches or wider. 12 10 18 24 210.52 92. 16-Common Codes Corrections 2010291Generally, receptacle outlets in a dwelling unit shall be installed in each wall space ______ feet or more in width. 2 1.5 3 4 210.52 93. 15-Common Codes Corrections 2010291In addition to the required branch circuits installed in a home for general lighting and outlets, ______. All of these are true statements. two one 210.11 C 94. 14-Common Codes Corrections 2010291At dwellings, ground fault circuit interrupter protection (GFCI) shall be provided for ______ receptacle outlets. crawl spaces at or below grade hallways bedroom All of these are true statements. 210.8 A 95. 13-Common Codes Corrections 2010291If a cable assembly has a white conductor and it is used for a 3-way switch, a 240 volt baseboard heater, or a 240 volt hot water tank, that conductor ______ be permanently re-identified to indicate its use. shall may can can not 200.7E 96. 12-Common Codes Corrections 2010291When identifying a neutral grounded conductor that is smaller than a 6 AWG, it can be properly identified ______. By a continuous gray outer finish along it's entire length By 3 continuous white stripes By a distinctive white marking at it's termination 200.7 97. 11-Common Codes Corrections 2010291What is the minimum working space clearance for a 277/480 volt system with exposed live parts on one side and grounded parts on the other? Measured from the front of the enclosure Two of these are true. Table 110.26 (A)1 98. 100-Common Codes Corrections 2010291A sealing fitting (seal off) is required in each conduit run passing from a Class-I, Division-2 location into an unclassified location. The sealing fitting ________. Is permitted on either side of the boundary Is permitted on either side of the boundary within 20 feet Is permitted only at the unclassified boundary location Is permitted only at the classified boundary location 501.15 B 2 99. 10-Common Codes Corrections 2010291The required workspace area around electrical equipment required by section 110.26 shall ______. not Impede access to and egress from working space Be posted Be marked Include an extra working space for future use 110.26 100. 1-Common Codes Corrections 2010291If you are capable of quickly reaching a piece of equipment for operation without resorting to something like a ladder to gain access, it is considered ______. Readily accessible Accessible (equipment) Accessible (wiring methods) Recessed Article 100 Complete Quiz Restart Quiz Save Progress Back Save Progress Retry Finish