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NEC 2017
Code Study
| Question | Answer |
|---|---|
| The purpose of this Code is the practical safeguarding of ______ and ______ from hazards arising from the use of electricity. This Code is not intended as a _______ _______ or an ______ _______for untrained persons. | 90.1(A) persons and property; design specification or an instruction manual |
| This Code contains provisions that are considered necessary for safety. But not necessarily ______, ________, or ________ | 90.1(B) Adequacy efficient, convenient, or adequate for good service or future expansion of electrical use. |
| This Code contains ______ chapters. Chapters ___ apply generally. Chapters ___ apply to special occupancies, special equipment, or other special conditions and may supplement or modify the requirements in Chapters 1 through 7. | 90.3 Code Arrangement. nine chapters; Chapters 1, 2, 3, and 4 apply generally. Chapters 5, 6, and 7 apply to special occupancies, special equipment, or other special conditions and may supplement or modify the requirements in Chapters 1 through 7. |
| Chapter __ covers communications systems and is not subject to the requirements of Chapters 1 through 7 except where the requirements are specifically referenced in Chapter 8. Chapter __ consists of tables that are applicable as referenced. | 90.3 Code Arrangement Chapter 8 Chapter 9 consists of tables that are applicable as referenced. |
| Informative Annexes are? Nonmandatory or Mandatory | 90.5(D) Informative Annexes. Nonmandatory information relative to the use of the NEC is provided in informative annexes. Informative annexes are not part of the enforceable requirements of the NEC, but are included for information purposes only. |
| The _____ for enforcement of the Code has the responsibility for making interpretations of the rules, for deciding on the approval of equipment and materials, and for granting the _____ ______ contemplated in a number of the rules. | 90.4 Enforcement. The (AHJ) authority having jurisdiction; special permission |
| By _____ _____, the authority having jurisdiction may waive specific requirements in this Code or permit alternative methods where it is assured that equivalent objectives can be achieved by establishing and maintaining effective safety. | 90.4 Enforcement. special permission |
| Define: Capable of being reached quickly for operation, renewal, or inspections without requiring use tools (other than keys), to climb over or under, to remove obstacles, or to resort to portable ladders, and so forth | Accessible, Readily (Readily Accessible). |
| Define: Capable of being removed or exposed without damaging the building structure or finish or not permanently closed in by the structure or finish of the building. ( | Accessible (as applied to wiring methods). |
| Define: The maximum current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating | Ampacity |
| Define: An area including a basin with one or more of the following: a toilet, a urinal, a tub, a shower, a bidet, or similar plumbing fixtures. | Bathroom. |
| Define: Interconnected battery subsystems consisting of one or more storage batteries and battery chargers, and can include inverters, converters, and associated electrical equipment | Battery System |
| A load where the maximum current is expected to continue for 3 hours or more. | Continuous Load |
| Continuous Load. A load where the maximum current is expected to continue for_____hours or more. | Three |
| Enclosures constructed so that dust will not enter under specified test conditions. | Dusttight. |
| Operation at a substantially constant load for an indefinitely long time. | Duty, Continuous. |
| Location, ____ Locations protected from weather and not subject to saturation with water or other liquids but subject to moderate degrees of moisture. | Location, Damp. |
| Location, ___. A location not normally subject to dampness or wetness. A location classified as dry may be temporarily subject to dampness or wetness, as in the case of a building under construction | Location, Dry. |
| Location, ___. Installations underground or in concrete slabs or masonry in direct contact with the earth; in locations subject to saturation with water or other liquids, such as vehicle washing areas; and in unprotected locations exposed to weather | Location, Wet. |
| Define: An enclosed channel designed expressly for holding wires, cables, or busbars, with additional functions as permitted in this Code | Raceway |
| Define: Constructed, protected, or treated so as to prevent rain from interfering with the successful operation of the apparatus under specified test conditions. | Rainproof. |
| Define: Constructed or protected so that exposure to a beating rain will not result in the entrance of water under specified test conditions | Raintight. |
| Define: The written consent of the authority having jurisdiction. | Special Permission |
| Define: Constructed so that moisture will not enter the enclosure under specified test conditions | Watertight. |
| Define: Constructed or protected so that exposure to the weather will not interfere with successful operation. | Weatherproof. Informational Note: Rainproof, raintight, or watertight equipment can fulfill the requirements for weatherproof where varying weather conditions other than wetness, such as snow, ice, dust, or temperature extremes, are not a factor. |
| Installation and Use. ____ or ____ equipment shall be installed and used in accordance with any instructions included in the ____ or ____ | 110.3(B) Installation and Use. Listed or labeled equipment shall be installed and used in accordance with any instructions included in the listing or labeling. |
| Conductors normally used to carry current shall be of ____ or ____ unless otherwise provided in this Code. Where the conductor material is not specified, the sizes given in this Code shall apply to ____ conductors. | 110.5 Conductors. copper or aluminum; copper Informational Note: For copper-clad aluminum conductors, see 310.15. |
| Electrical equipment shall be installed in a ____ and ____ manner. | 110.12 Mechanical Execution of Work. neat and workmanlike manner. |
| Unused openings, other than those intended for the operation of equipment, those intended for mounting purposes, or those permitted as part of the design for listed equipment, shall be ____ | 110.12(A) Unused Openings. closed |
| Connection by means of wire-binding screws or studs and nuts that have upturned lugs or the equivalent shall be permitted for ___ AWG or smaller conductors. | 110.14(A) Terminals. 10 AWG Terminals for more than one conductor and terminals used to connect aluminum shall be so identified. |
| Connectors and terminals for conductors more finely stranded than Class B and Class C stranding as shown in Chapter ___, Table 10, shall be identified for the specific conductor class or classes. | 110.14 Electrical Connections. Chapter 9 |
| The temperature rating associated with the ampacity of a conductor shall be _____ and ______ so as not to exceed the lowest temperature rating of any connected termination, conductor, or device. | 110.14(C) Temperature Limitations. selected and coordinated. Conductors with temperature ratings higher than specified for terminations shall be permitted to be used for ampacity adjustment, correction, or both. |
| Termination provisions of equipment for circuits rated over 100 amperes, or marked for conductors larger than 1 AWG, shall be used only for one of the following: (1) Conductors rated __°C | 110.14(C)(1) Equipment Provisions. (1)75°C (2)Conductors with higher temperature ratings, provided the ampacity of such conductors does not exceed the 75°C (167°F) ampacity of the conductor |
| For motors marked with design letters _, _, or _, conductors having an insulation rating of __°C (___°F) or higher shall be permitted to be used, provided the ampacity of such conductors does not exceed the __°C (___°F) ampacity | 110.14(C)(1)(a)(4) Equipment Provisions B, C, or D, 75°C (167°F) |
| On a 4-wire, delta-connected system where the midpoint of one phase winding is grounded, only the conductor or busbar having the higher phase voltage to ground shall be durably and permanently marked by an outer finish that is ______ in color | 110.15 High-Leg Marking. Orange |
| Electrical equipment, such as switchboards, switchgear, panelboards, industrial control panels, meter socket enclosures, and motor control centers, other than___ ___, shall be field or factory marked to warn of potential electric arc flash hazards. | 110.16(A) General. Dwelling Units |
| 110.16(B) Service Equipment. a permanent label shall be field or factory applied to service equipment rated ____ amps or more. The label shall meet the requirements of 110.21(B) and contain the following information: | 110.16(B) Service Equipment. 1200 |
| 110.26(A)(1) Depth of Working Space. The depth of the working space in the direction of live parts shall not be less than ___ft when voltage is not more than 150 volts to ground, | 110.26(A)(1) Depth of Working Space. 3ft other voltages/conditions; space in the direction of live parts shall not be less than that specified in Table 110.26(A)(1) unless the requirements of 110.26(A)(1)(a), |
| The width of the working space in front of the electrical equipment shall be the width of ___ ______or (___ in.), whichever is greater. In all cases, the work space shall permit at least a __ degree opening of equipment doors or hinged panels. | 110.26(A)(2) Width of Working Space. the equipment or (30 in.), whichever is greater; 90 degree |
| The work space shall be clear and extend from the grade, floor, or platform to a height of __ m (____ ft) or the height of the equipment, whichever is greater. | 110.26(A)(3) Height of Working Space. 2.0 m (61∕ 2 ft). |
| A panel mounted below another panel may not extend out past ___ inches into the working space of the upper panel. | 110.26(A)(3) 6 inches |
| For equipment rated ____ amperes or more and over __ m (_ ft) wide that contains overcurrent devices, switching devices, or control devices, there shall be one entrance to and egress at each end of the working space. | 110.26(C)(2) Large Equipment. 1200 Amps A single entrance to and egress from the required working space shall be permitted (a) Unobstructed Egress (b) Extra Working Space. Where the depth of the working space is twice that required by 110.26(A)(1) |
| Where equipment rated ___ A and there is a personnel door(s) intended for entrance to and egress from the door(s) shall open in the direction of egress and be equipped with listed panic hardware. | 110.26(C)(3) Personnel Doors. 800 A or more, a personnel door for entrance to and egress from the working space less than 7.6 m (25 ft) from the working space, the door(s) shall open in the direction of egress and be equipped with listed panic hardware. |
| Illumination shall be provided for all working spaces about service equipment installed indoors. Additional lighting outlets ________ be required where the work space is illuminated by an adjacent light source | 110.26(D) Illumination. Shall not Control by automatic means only shall not be permitted. |
| The space equal to the width and depth of the equipment and extending from the floor to a height of __ m (__ ft) above the equipment or to the structural ceiling, whichever is lower, shall be dedicated to the electrical installation. | 110.26(E)(1) Indoor. 1.8 m (6 ft); No piping, ducts, leak protection apparatus, or other equipment foreign to the electrical installation shall be located in this zone. Exception: Suspended ceilings |
| Part III or article 110 deals with over _____ volts | Part III. Over 1000 Volts, Nominal 110.30 General. |
| 110.26(A)(4) Limited Access. Where equipment operating at 1000 volts, nominal, or less to110.26(A)(4) Limited Access. Where equipment operating at 1000 volts, nominal, or less to ground and likely to require examination, adjustment, servicing, or mainte | 110.26(A)(4) Limited Access. Where equipment operating at 1000 volts, nominal, or less to ground and likely to require examination, adjustment, servicing, or maintenance while energized is required by installation instructions or function to be located i |
| Reconditioned equipment shall be identified as “_______” and approval of the reconditioned equipment shall not be based solely on the equipment’s original listing. | 110.21(A)(2) Reconditioned Equipment. “reconditioned” |
| Limited Access. Where equipment is installed above a lay-in ceiling, there shall be an opening not smaller than __ in. × __ in.), or in a crawl space, there shall be an accessible opening not smaller than __ in. × __ in. | 110.26(A)(4) Limited Access. 559 mm × 559 mm (22 in. × 22 in.), or in a crawl space 559 mm × 762 mm (22 in. × 30 in.). |
| Grounded conductors are covered in article ____ | 200 |
| The continuity of a grounded conductor shall not depend on a connection to a metallic ________, raceway, or ______ armor. | 200.2(B) Continuity. metallic enclosure, raceway, or cable armor. |
| Neutral conductors shall not be used for more than ____ branch circuit, for more than ____ multiwire branch circuit, or for more than ____ set of ungrounded feeder conductors unless specifically permitted elsewhere in this Code. | 200.4(A) Installation. one; one; one |
| Where more than one neutral conductor associated with different circuits is in an enclosure, grounded circuit conductors of each circuit shall be identified or grouped to correspond with the _________ circuit conductor(s) | 200.4(B) Multiple Circuits. ungrounded Exception No. 1: If grouping is obvious Exception No. 2: passing though a box without a loop as described in 314.16(B)(1) or without a splice or termination. |
| An insulated grounded conductor of __ AWG or smaller shall be identified by one of the following means: A continuous ____ or ____ outer finish. ____ continuous ____ or ____ stripes | 200.6(A) Sizes 6 AWG or Smaller. 6 AWG or smaller White or Grey; Three White or Gray The grounded conductor of Type MI shall be identified at the time of installation by distinctive marking at its terminations. |
| Black insulated grounded conductor __ AWG or larger may be re-identified At the time of installation, by a distinctive white or gray marking at its terminations. This marking shall encircle the conductor or insulation. | 200.6(B) Sizes 4 AWG or Larger. 4 AWG |
| May the grounded conductor of type NM cable be reidentified and used as an ungrounded conductor? | 200.7(C) Circuits of 50 Volts or More. Yes If used for single-pole, 3-way or 4-way switch loops, the reidentified conductor with white or gray insulation or three continuous white or gray stripes shall be used only for the supply to the switch |
| The identification of terminals to which a grounded conductor is to be connected shall be substantially____ in color. The identification of other terminals shall be of a readily distinguishable different color. | 200.9 Means of Identification of Terminals. White |
| For devices with screw shells, the terminal for the _______ conductor shall be the one connected to the screw shell. | 200.10(C) Screw Shells. Grounded |
| Branch circuits recognized by this article shall be permitted as multiwire circuits. A multiwire circuit shall be permitted to be considered as______ circuits. | 210.4 Multiwire Branch Circuits. 210.4(A) General. Multiple |
| Each multiwire branch circuit shall be provided with a means that will simultaneously disconnect all _______ conductors at the point where the branch circuit originates. | 210.4(B) Disconnecting Means. ungrounded |
| Where the premises wiring system has branch circuits supplied from more than ___ nominal voltage system, each ______ conductor of a branch circuit shall be identified by phase or line and system at all termination, connection, and splice points | 210.5(C)(1) Branch Circuits Supplied from More Than One Nominal Voltage System. one; ungrounded |
| In dwelling units and guest rooms of hotels, motels, and similar occupancies, the voltage shall not exceed ___ volts, nominal, between conductors that supply the terminals of the following Luminaires & Cord-and-plug loads ____ VA, or less than 1∕ 4 hps | 210.6(A) Occupancy Limitation. 120 volts; 1440 volt-amperes |
| May a 240 volt lighting outlet be used for luminaires in a dwelling unit? | 210.6(A) No |
| Ground-fault circuit-interrupter protection for personnel shall be provided as required in 210.8(A) through (E). The ground-fault circuit interrupter shall be installed in a__________ location. | 210.8 Ground-Fault Circuit-Interrupter Protection for Personnel. readily accessible location. Info Note 1: 215.9 for ground-fault circuit-interrupter protection for personnel on feeders. Info Note 2: 422.5(A) for GFCI requirements for appliances. |
| Dwelling Units All 125-volt, single-phase, __- and __-ampere receptacles installed these locations shall have GFCI protection for personnel. List 10 | 210.8(A) Dwelling Units. 15- and 20-ampere (1)Bathrooms (2)Garages (3)Outdoors (4)Crawl spaces (5)Unfinished basement (6)Kitchens — countertop (7)Sinks - within 6ft (8)Boathouses (9)Bathtubs or shower stalls - within 6 ft (10)Laundry areas |
| Two exceptions to GFCI requirements in 210.8(A) 1. Outdoor: Dedicated _____ _____ ________ ________ _______ 2.Unfinished Basement: Permanently Installed _________ _________ ____________ | 210.8(A) Dwelling Units. Exception to (3): dedicated to electric snow-melting, deicing, or pipeline and vessel heating equipment Exception to (5): permanently installed fire alarm or burglar alarm system shall not be required to have GFCI protection. |
| Other Than Dwelling Units. All single-phase receptacles rated ___ volts to ground or less, ___ amps or less and three-phase receptacles rated ___ volts to ground or less, ___ amps or less installed in the following locations shall have GFCI protection. | 210.8(B) Other Than Dwelling Units. single-phase 150 volts, 50 amperes three-phase 150 volts, 100 amperes |
| Other Than Dwelling Units. Locations requiring GFCI Protection List 10 | 210.8(B) Other Than Dwelling Units. (1) Bathrooms (2) Kitchens (3) Rooftops (4) Outdoors (5) Sinks — within 6 ft (6) Indoor wet locations (7) Locker rooms with showers (8) Garages (9) Crawl spaces (10) Unfinished basement |
| ____ protection shall be provided for outlets that supply dishwashers installed in dwelling unit locations. | 210.8(D) Kitchen Dishwasher Branch Circuit. GFCI |
| In addition to the number of branch circuits required by other parts of this section, ___ or more 20-ampere small-appliance branch circuits shall be provided for all receptacle outlets specified by 210.52(B). | 210.11(C) Dwelling Units. 210.11(C)(1) Small-Appliance Branch Circuits. Two North Dakota Code: Three |
| At least one ___-ampere branch circuit shall be provided to supply the laundry receptacle outlet(s) required by 210.52(F). This circuit shall have no other outlets. | 210.11(C)(2) Laundry Branch Circuits. 20 |
| At least one __-ampere branch circuit shall be provided to supply the bathroom(s) receptacle outlet(s). Such circuits shall have no other outlets. | 210.11(C)(3) Bathroom Branch Circuits. 20; Exception: Where the 20-ampere circuit supplies a single bathroom, outlets for other equipment within the same bathroom shall be permitted to be supplied in accordance with 210.23(A)(1) and (A)(2). |
| at least one __-ampere branch circuit shall be installed to supply receptacle outlets in attached garages and in detached garages with electric power. This circuit shall have no other outlets. | 210.11(C)(4) Garage Branch Circuits. 20 |
| Arc-fault circuit-interrupter protection shall be provided as required in 210.12(A), (B), (C), and (D). The arc-fault circuit interrupter shall be installed in a _____________ location. | 210.12 Arc-Fault Circuit-Interrupter Protection. readily accessible |
| All 15 & 20-ampere branch circuits in dwelling unit kitchens, family rooms, dining rooms, living rooms, parlors, libraries, dens, bedrooms, sunrooms, recreation rooms, closets, hallways, laundry areas, or similar rooms or areas shall be protected by _____ | 210.12(A) Dwelling Units. Arc-fault circuit interruption (AFCI) |
| 210.12(B) Dormitory Units. Require ______ protection 210.12(C) Guest Rooms and Guest Suites. Require ______ protection | 210.12(B) Dormitory Units. AFCI 210.12(C) Guest Rooms and Guest Suites. AFCI |
| Exception: AFCI protection shall not be required where the extension of the existing conductors is not more than __ ft) and does not include any additional outlets or devices. | 210.12(D) Branch Circuit Extensions or Modifications 6 ft |
| Each branch-circuit disconnect rated ____ A or more and installed on solidly grounded wye electrical systems of more than 150 volts to ground, but not exceeding 600 volts phase-to-phase, shall be provided with _____________ protection of equipment | 210.13 Ground-Fault Protection of Equipment. 1000 A; ground-fault protection |
| conductors supplying household ranges shall have an ampacity not less than the rating of the branch circuit and not less than the maximum load to be served. For ranges of 8 3∕ 4 kW or more rating, the minimum branch-circuit rating shall be __ amperes. | 210.19(A)(3) Household Ranges and Cooking Appliances. 40 |
| Neutral conductor of a 3-wire branch circuit supplying a househol range shall be permitted to be smaller than the ungrounded conductors, Where not less than ___% of the circuit rating and shall not be smaller than ____ | 210.19(A)(3) Exception No. 2: 70 percent of the branch-circuit rating and shall not be smaller than 10 AWG |
| Where a branch circuit supplies continuous loads or any combination of continuous and noncontinuous loads, the rating of the overcurrent device shall not be less than the noncontinuous load plus ____ percent of the continuous load. | 210.20(A) Continuous and Noncontinuous Loads. 125 percent |
| An individual branch circuit shall be permitted to supply any load for which it is rated, but in no case shall the load exceed the branch-circuit _______ rating. | 210.22 Permissible Loads, Individual Branch Circuits. ampere |
| The rating of any one cord-and-plug-connected utilization equipment not fastened in place shall not exceed __ percent of the branch-circuit ampere rating. | 210.23(A)(1) Cord-and-Plug-Connected Equipment Not Fastened in Place. 80 percent |
| Fastened in place appliance on a circuit with two or more outlets may not take up more than ____% of the circuit rating | 210.23(A)(2) Utilization Equipment Fastened in Place. 50% |
| A 20 amp circuit may use __ or __ amp receptacles | 210.21(B)(3) Receptacle Ratings. 15 or 20 |
| A 20 amp branch circuit required #12 conductors but you may tap off with #14's to feed a lighting outlet not longer than ____ inches long | 210.19(A)(4) Exception 1 18 inches |
| According to the tap conductor rule in 210.19(A)(4) Exception 1 which references you to 410.117, you may tap off a 20 amp lighting circuit with #14 to recessed lighting fixture if the flexible metal raceway is between ____ in and ___ feet long | 18 inch; 6Feet |
| May the hall lighting in an apartment house be placed on an individual apartments electrical panel? | 210.25(B) No |
| Branch circuits in each dwelling unit with more than one occupancy shall supply only loads within or associated with that________ _______ | 210.25(A) Dwelling Unit Branch Circuits. dwelling unit. |
| Appliance receptacle outlets installed in a dwelling unit for specific appliances, such as laundry equipment, shall be installed within _____ft of the intended location of the appliance. | 210.50(C) Appliance Receptacle Outlets. 6ft |
| In a dwelling unit, a receptacle placed more than ____ feet off the floor does not count as meeting the minimum requirements | 210.52(4) 5 1/2 |
| in a dwelling unit bedroom no point along the wall may be more than ___ feet from a receptacle outlet | 210.52(A)(1) |
| A wall space In a dwelling unit any space ___ feet or more in width and unbroken along the floor line by doorways and similar opening | 210.52(A)(2) 2 feet |
| A floor receptacle shall not be counted as part of the required number of receptacle outlets unless located within ___ inches of the wall | 210.52(A)(3) 18 inches |
| How many small appliance branch circuits are required in a dwelling unit Kitchen, pantry, breakfast room, dining room? How many in north dakota? | 210.52(B)(3) two NEC three North Dakota |
| A receptacle outlet shall be installed at each wall countertop and work surface that is __ in or wider. Receptacle outlets shall be installed so that no point along the wall line is more than ___ measured horizontally from a receptacle | 210.52(C)(1) Wall Countertop and Work Surface. 12 inches; 24 inches |
| At least one receptacle shall be installed at each island countertop space with a long dimension of ___ inches or greater and a short dimension of ___ inches or greater. | 210.52(C)(2) Island Countertop Spaces. 24in; 12in |
| Every counter space ___ inches or wider requires a receptacle outlet | 210.52(C)(1) 12 inches |
| The space behind a sink in a corner is exempt from the wall line if the distance from the corner to the sink is less than ___ inches | 210.52(C)(1) Exception 18 inches |
| Receptacle outlets must not be located more than ___ inches above the countertop | 210.52(C)(5) 20 inches |
| Receptacle outlets shall be located on or above, but not more than ____ in above, the counter or work surface. Receptacle outlet assemblies listed for use in countertops or work surfaces shall be permitted to be installed in countertops or work surfaces | 210.52(C)(5) Receptacle Outlet Location. 20 inches |
| Exception to (5) Receptacle outlets shall be permitted to be mounted not more than __ inches below the countertop. Receptacles mounted below a countertop shall not be located where the countertop extends more than __ inches beyond its support base. | 210.52(C)(5) exception to (5) 12 inches; 6 inches |
| In a bathroom, the receptacle outlet must be within __ feet of the basin | 210.52(D) 3 feet |
| A single family dwelling requires at least ___ outdoor receptacles | 210.52(E)(1) |
| In dwelling units the required outdoor receptacle outlets must be _______ ________ from grade and not more than _____ ft above grade | 210.52(D) readily accessible 6 1/2 feet |
| A dwelling unit three stall garage requires at least ___ receptacle outlets | 210.52(G)(1) 3 receptacles |
| In a dwelling unit each vehicle bay requires at least ____ receptacle(s) not more than ____ feet above the floor | 210.52(G)(1) one; 5 1/2 feet |
| A hallway requires a receptacle outlet if it is ___ feet or longer | 210.52(H) 10 feet |
| a foyer requires a receptacle outlet if it is ___ sq ft or more. One is required on each wall space that is s____ feet or wider | 210.52(I) 60 sq ft 3 feet |
| At least one 15 or 20 amp receptacle outlet shall be installed within ___ inches of the top of a show window for each ____ linear feet or major fraction thereof | 210.62 18 inches 12 linear feet |
| A receptacle is required withing ___ feet of HVAC and refrigeration equipment | 210.63 25 feet |
| In other than dwelling units at least ____ receptacle outlet shall be installed in an accessivle location within ___ feet of the service equipment | 210.64 one; 25 feet |
| Meeting rooms less than _____ sq ft follow receptacle outlet rules of dwelling unit | 210.71 1000 sq ft |
| A meeting room that is at least 12 feet wide requires a floor receptacle no closer than 6 ft of the wall fro ever _____ sq ft of floor area | 210.71(B)(2) 215 sq ft |
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