NCCER Introduction to the National Electrical Code (26105-20) Practice Test

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• What is the minimum height above the finished floor for receptacles in dwelling units?
• Which annex contains the ADA requirements for accessible design?
• Which annex provides information on critical operations power systems?
• What is the internet address used to submit input for the NEC?
• ____ founded in 1926, is made up of companies that manufacture equipment used for generation, transmission, distribution, control, and utilization of electric power.
• Which informative annex contains information for determining ampacities of conductors under engineering supervision?
• Which NEC article covers grounding and bonding?
• What is the primary purpose of box fill calculations for a multi-gang box?
• What is the purpose of GFCI in wet locations?
• Which NEC chapter is a special category for wiring associated with electronic communications systems including telephone, radio, and TV, satellite dish, network-powered broadband systems, and community antenna TV and radio distribution systems?
• Which informative annex contains the load calculation examples for branch circuits, feeders, and services, as well as load calculations?
• Which article covers emergency power and standby power systems?
• In addition to different types of text, the NEC contains two types of rules: what are they?
• What is a service conductor?
• What is the difference between a receptacle and a plug-in device?
• What is the typical voltage rating used for general use equipment?
• What is the purpose of a neutral bus in a panelboard?
• ____ publishes a list of NRTLs.
• NELA stands for which association?
• The first nationally recommended electrical code was published by the ____ (now known as the American Insurance Association) in 1895.
• Which of the following is included as a topic in the NEC introduction article?
• Which NEC article provides definitions used throughout the NEC?
• What is the purpose of a pull box in a wiring run?
• What is the purpose of a service disconnect?
• Which annex contains information on types of building construction?
• Which chapter covers the installation of emergency and legally required standby systems?
• Which annex contains suggested requirements for administration and enforcement of the NEC?
• Which statement about listing of electrical products is correct?
• Which NEC article covers lighting fixtures and luminaires?
• Which NEC article covers motors and motor circuits?
• What is the typical voltage and allowable amperage for general dwelling receptacles?
• Which term refers to third-party certification for electrical equipment?
• By 1896 ___ (NELA) was working to make the requirements of the fire insurance organizations and electrical utilities fit together.
• What is the role of the AHJ in electrical installations?
• In box-fill calculations for a single-gang box containing a duplex receptacle, how many conductors does the device count as?
• Which annex contains the ADA requirements for accessible design?
• What is used to protect conductors from nails or screws when running through framing?
• On a single-phase 120V circuit, which color is typically used for the hot conductor?
• Which annex is described as informational and pertains to SCADA systems?
• Which conditions trigger derating of conductor ampacity?
• Which article would you consult for the general rules on receptacle protection and dwelling unit branch circuits?
• In dwelling units, receptacles not more than how many feet apart along the wall line?
• What are typical outdoor installation requirements for wiring and devices?
• What is a grounding electrode system?
• How many major categories are the NEC chapters organized into?
• How does the NEC address protection of conductors in studs and framing?
• What is the purpose of Article 590?
• Which term describes equipment that has been tested and approved for a specific use?
• Which organization began publishing the NEC in 1962 after taking over from the National Board of Fire Underwriters?
• In NEC terminology, which concept governs electrical installations in locations with potentially explosive or flammable atmospheres?
• Which NEC article covers overcurrent protection?
• What is a feeder in electrical distribution?
• Which organization, known for fire protection standards, is commonly associated with NFPA?
• Which type of conductor is typically used for grounding in most residential installations?
• Informative annex G is described as informational and covers supervisory control and data acquisition (SCADA) systems. Which annex is this?
• Which article governs the installation of switches?
• Which NEC chapter is a special category for wiring associated with electronic communications systems?
• Which NEC chapter provides the requirements for various types of special equipment not covered in other chapters of the NEC?
• Which NEC article covers wiring methods like NM cable and conduit?
• Which article covers outdoor lighting fixtures and installation safety?
• NEC chapter 3 lists the rules on wiring methods and materials. The materials and procedures to use on a particular system depend on the type of building construction, type of occupancy, location of the wiring of the building, or in the area surrounding the building, and mechanical factors.
• Which NEC article governs branch circuits and their protection?
• Which NEC article provides the general requirements for electrical installations?
• Which article covers the use and installation of flexible cords and cables including the trade name, type letter, wire size, etc.?
• Which NEC topic would govern safety for electrical installations in environments with flammable vapors?
• NEC article 400 covers the use and installation of flexible cords and cables, including the trade name, type letter, wire size, number of conductors, conductor installation, outer covering, and use of each type.
• What voltage is typical for most residential circuits?
• The objectives of NEMA include maintaining and improving the quality and reliability of products. Which two verbs complete this statement?
• What is the typical rating for a standard residential branch circuit serving outlets?
• Which article governs wiring methods and installation of conductors through walls and ceilings?
• What is a receptacle outlet?
• Which topic is explicitly listed as being covered in the NEC introduction article?
• Which annex would you consult to determine ampacities of conductors under engineering supervision?
• Which annex provides information on critical operations power systems?
• Which color is typically used to identify a neutral conductor?
• The definitions for labeled and listed emphasize attention to which two characteristics of materials used in electrical wiring systems?
• What does NEC 110.3(B) require about listed equipment?
• What is NM cable used for?
• Which informative annex contains a list of product safety standards?
• Which statement best describes the role of a neutral in a panelboard?
• What does NEC Article 100 define?
• How must a multiwire branch circuit (MWBC) be protected?
• Which statement best summarizes the NEC's overarching safety goal for practitioners?
• Which statement correctly describes bonding and grounding?
• Which annex is for informational purposes; it covers supervisory control and data acquisition (SCADA) systems?
• Which color is used for a grounding conductor in insulated residential wiring?
• Which article governs temporary wiring provisions for construction sites?
• GFCI protection beyond standard indoor locations is required in which areas?
• What is a conductor and give two common examples?
• What does the term 'listed' imply about a product?
• Which NEC article covers wiring methods such as cables, raceways, and conduits?
• Which condition ensures simultaneous disconnection of MWBC conductors?
• Which NEC article governs the installation of switches?
• What is the general purpose of the NEC's color code?
• ____ (NRTLs) are product safety certification laboratories. These labs perform extensive testing of new products to make sure they are built to establish standards for electrical and fire safety.
• Why is conductor insulation temperature rating important for ampacity?
• How many chapters is the NEC organized into?
• NEC articles 501, 502, and 503 cover the installation of _______ wiring in hazardous (classified) locations. This system is designed to prevent the ignition of a surrounding explosive atmosphere when arcing occurs within the electrical system, and has three classes.
• What is a branch circuit?
• Which NEC article covers general requirements for electrical installations?
• The main body of the NEC begins with which article number?
• This chapter covers various types of communications systems.
• How many main types of overcurrent protection devices are used in residential electrical systems?
• Which of the following is a grounding electrode?
• What is the required working space in front of electrical equipment?
• Which topic addresses safety around pool and spa equipment within the NEC framework?
• What is a junction box used for?
• In dwelling units, which NEC article requires GFCI protection for certain outlets?
• How is the size of the service grounding electrode conductor determined?
• What is the weatherproofing requirement for outdoor receptacles?
• In electrical distribution, what term describes a circuit that carries power from service equipment to distribution equipment or subpanels?
• In a normal 120/240V system, which color is typically used for the neutral conductor?
• Headings for each NEC application are written in which formatting style?
• Which NEC topic addresses the safety of backup power systems during outages?
• Which NEC chapter covers the installation of emergency and legally required standby systems?
• Which NEC article governs overcurrent protection?
• Two definitions from NEC Article 100 you should become familiar with are: ___ and ____.
• Informative annexes A through J contain what kind of information?
• Which statement about the NEC's structure is true?
• Which color is typically used for neutral in residential wiring?
• What does it mean if a component is listed in the NEC?
• How far apart must receptacles be located along wall spaces in dwelling units?
• What is the difference between a service disconnect and a branch-circuit disconnect?
• In ____ the NFPA takes over publishing the NEC from NBFU.
• What term describes the italicized material that explains the circumstances under which a specific part of the NEC does not apply?
• What is the function of the equipment grounding conductor?
• Where is GFCI protection required in dwelling units?
• NEC Article 100 contains a list of common what specific to a single article?
• What is the purpose of an equipment grounding conductor?
• The disconnecting means in service equipment is intended to do what?
• Which term describes equipment that has been evaluated and placed on a listing indicating compliance?
• Which article is associated with definitions used throughout the NEC?
• Which annex contains the torque tables from UL 468A-B?
• To be used for a specific application, equipment must be what?
• Which informative annex contains the conduit fill tables for multiple conductors of the same size and type within the accepted raceways?
• What is derating and when might it apply?
• Which statement best describes the relationship between ampacity and conductor insulation temperature rating?
• What's often included to provide more detailed application requirements, such as for different wire sizes, box size, or motor types?
• Which color is typically used for hot in residential wiring?
• Which two organizations are cited as playing critical roles in worldwide electrical standards?
• Informative annexes contain information that is not mandatory. Which of the following best describes this?
• Which annex would you consult for administration and enforcement of the NEC?
• Which annex provides information on SCADA systems?
• Which annex contains the torque tables from UL 468A-B?
• What is the meaning of 'listed' versus 'labeled'?
• Which NEC article governs nonmetallic-sheathed cable NM installations?
• Which annex contains the ADA requirements for accessible design?
• NFPA 70 is commonly known as what?
• Which informative annex contains examples of calculations for branch circuits, feeders, and services, as well as load calculations?
• The chapters that present the rules for the design and installation of electrical systems are which set?
• What is the purpose of a box fill calculation for a single-gang box containing a duplex receptacle?
• The NEC provides the minimum requirements for the installation of what?
• Class 1 areas containing flammable gases or vapors in the air may include paint spray booths and gas generator rooms. (NEC article 501)
• Which article would you consult for switches and wall-mounted devices?
• Which NEC article addresses branch circuits, receptacles, and their protection in dwelling units?
• Which device is fixed to accept a plug-in appliance?
• In the NEC introduction article, which topic is listed as being covered?
• What is the primary purpose of a grounding electrode system?
• Which NEC table provides guidance on determining the size of the grounding electrode conductor?
• A multiwire branch circuit uses two or more ungrounded conductors sharing a neutral; what disconnection requirement applies?
• The primary purpose of the NEC is to provide practical safeguarding of which of the following?
• NEC article 250 covers the requirements for grounding and bonding electrical systems. It lists the systems required, permitted and not permitted to be grounded and provides the requirements for grounding connection locations.
• Which NEC article provides the overall scope and general safety requirements for electrical installations?
• What is the purpose of box fill calculations?
• Which of the following describes box fill calculations?
• What is a receptacle?
• NEC chapter 2 discusses wiring design and protection; what is the chapter number?
• In residential electrical installations, which color is used for equipment grounding conductors?
• Which NEC article discusses conductors and their ampacity?
• In residential wiring, how are hot, neutral, and ground conductors typically color-coded?
• What is the purpose of Article 410?
• Is NM-B cable permitted in damp or wet locations?
• Which article covers grounding and bonding requirements for electrical systems?
• What describes the main function of a panelboard in distributing power?
• Why should metal parts and enclosures be bonded?
• What color is the equipment grounding conductor?
• Which factor determines the materials and procedures used for wiring according to NEC chapter 3?
• Which of the following describes the typical voltage and amperage for general dwelling receptacles?
• What is the overarching objective of the NEC for practitioners?
• What is the purpose of box fill calculations?
• In ____ the National Association of Fire Engineers met in Richmond, Virginia. From this meeting came the idea to draft the first National Electric Code.
• Which NEC chapter contains detailed tables along with explanatory notes, covering conduit bends, raceway fill, and conductor dimensions?
• Which statement best differentiates a feeder from a branch circuit?
• What is the role of listed equipment in electrical installations?
• Which class of hazardous areas is described as having ignitable fibers or dust in the air, not in quantities to form ignitable mixtures?
• Which NEC topic addresses the design and operation of systems that provide power during an outage?
• What color codes are used for neutral conductors in normal 120/240V circuits?
• What is SE cable and where is it typically used?
• AFCI protection is designed to protect against which type of electrical fault?
• What is the typical color code for a hot conductor on a single-phase 120V circuit?
• What element may be included with explanations to show how an application might appear?
• What is the purpose of an informational note in the NEC?
• Which article provides the general safety requirements for electrical installations?
• Which NEC article contains rules for electrical boxes and enclosures?
• Which NEC article covers electric signs and outline lighting?
• Which article would you reference to determine the ampacity rating of conductors?
• The chapters that are concerned with special occupancies, equipment, and conditions are?
• Which NEC topic covers the use and interconnection of storage batteries with the utility?
• Which article covers grounding connection locations and permissible grounding methods?
• Which of the following is considered a grounding electrode?
• Which NEC article covers grounding electrode systems?
• Which NEC article governs conductors and their ampacity?
• Which statement about listed components is true?
• Today, the NEC is administered by which organization?
• Which chapter contains tables that are applicable when referenced by other chapters in the NEC?
• What does AHJ stand for and what is its role?
• What is the difference between a neutral conductor and an equipment grounding conductor?
• What is the purpose of a panelboard?
• Which NEC topic covers the use and safety of storage batteries connected to the utility?
• What is the difference between a switch and a receptacle?
• Which NEC article addresses electric signs and outline lighting?
• In dwelling units, which NEC article requires AFCI protection for 120V branch circuits?
• The informative annexes are designated by which range of letters?
• In most dwellings, a kitchen requires at least how many 20-amp small-appliance branch circuits?
• The NEC's major category count is five. Which option represents that fact?
• Which NEC article covers luminaires and lighting outlets?
• What is the purpose of arc-fault protection in dwelling units?
• The National Board of Fire Underwriters is now known as which organization?
• In a MWBC, what is required to safely disconnect simultaneously?
• What term explains something in an application, suggests other sections to read, or provides tips about the application?
• What is AFCI protection and where is it required in dwelling units?
• NEC chapter 5 covers special occupancy areas. These areas where sparks or heat generated by electrical equipment may cause an explosion or fire. Examples would include: commercial garages, aircraft hangars, and service stations.
• Which article covers signs and outline lighting?
• Which annex contains information on building construction types?
• Which NEC topic governs safety related to pool and spa equipment?
• What does SCCR stand for and why is it important?
• In a multiwire branch circuit, what does a common-trip breaker ensure?
• Which amperage rating is required for kitchens' small-appliance branch circuits in most dwellings?
• What is the requirement for temporary wiring at construction sites?
• Which statement best describes a common content of Article 100?
• Which NEC article covers receptacle spacing along walls in dwelling units?
• Which term refers to the marking indicating compliance with standards?
• The NEC has a rich history, from its conceptual beginnings in the late ____ century.
• What is the difference between 'grounding' and 'bonding'?
• Which NEC article provides the general requirements for electrical installations?
• In a multiwire circuit, which color is commonly used for an additional hot conductor?
• Which article contains rules for electrical boxes and enclosures, including box fill calculations?
• A paint spray booth area would be classified as which class of hazardous location?