Article 300 cable or nonmetallic raceway-type wiring methods installed in a groove, to be covered by wallboard, siding paneling, carpeting, or similar finish must be protected by 1/16in.thick____ or by not less than 1 1/4in. of free space for the full length of the groove. A thinner plate that provides equal or better protection may be used if listed and marked. a. steel plate      b. steel sleeve    c. PVC bushing  d. a or b

For residential wiring, not less than one 15-ampere lighting branch circuit should be provided for every ____________ ft2 of floor area. If 20-ampere lighting branch circuits are used, provide one 20-ampere lighting branch circuit for every ____________ ft2 of floor area

a. The Code requires a minimum of two small-appliance circuits in a kitchen. Is it permitted to connect a receptacle in a dining room to one of the kitchen small-appliance circuits? _______________ What Code section applies to this situation? _______________ b. Are outdoor weatherproof receptacles permitted to be connected to a 20-ampere small-appliance circuit? _______________ c. Receptacles located above the countertops in the kitchen must be supplied by at least _______________ 20-ampere small-appliance circuits.

18. Which of the following would help avoid the choke effect in grounding electrode conductors?A. Installing a main bonding jumperB. Using an approved polyvinyl chloride conduitC. Applying solder to the connectionD. Using bonding bushes on the ends of the raceway

what section of the code prohibits supporting telephone wires from raceways that contain light or power conductors.

Are double locknuts an acceptable bonding method for Class 1, Division 1 Hazardous locations?   If not, list an acceptable method, backing up your answer with a code citation.

5. If a separate, wire-type equipment grounding conductor (EGC) is used for any reason, the EGC of a grounding-type receptacle must be connected to which of the following?A. The grounding terminal bar outside the service equipment enclosure in a grounded systemB. An EGC that's part of another branch circuit that originates from where the branch circuit for the receptacle originatesC. Any accessible point on the grounding electrode conductorD. The service conductor outside the service equipment enclosure in an ungrounded system

21.Which of the following wiring methods may be used inside the duct used for vapor removal and ventilation of commercial type cooking equipment?  (a.) nonmetallic sheathed cable (b.) EMT (c.) rigid steel conduit (d.) none of these   22. Ground-fault circuit-interrupter (GFCI) protection is required in all of the following locations EXCEPT: (a.) kitchen receptacles in an office building lunchroom installed within 6’ of the sink  (b.) kitchen receptacles in a dwelling installed to serve counter top surfaces 10’ away from the sink  (c.) receptacles in an office building restroom which has only a basin and toilet (d.) receptacle provided for servicing a rooftop air conditioning unit on the roof of a warehouse   23. Where GFCI protection is located in the power supply cord for an outdoor portable sign, the ground-fault circuit interrupter shall be located within _____inches of the attachment plug. (a.) 6 (c.) 18 (b.) 12 (d.) 24

10.a. Which of the following is a condition of the exception that allows the grounded conductor of feeders tobe used for grounding at separate buildings or structures?A. There are common electrically continuous metallic paths between the feeder source and the destination at the structure served.B. There are common electrically continuous nonmetallic paths between the equipment grounding conductor and the destinationat the structure served.C. An equipment grounding conductor isn't included with the supply circuit to the separate structure.D. Ground-fault protection of equipment is provided on the supply side of the feeder.10.b. A service disconnection means must be installed adjacent to, within sight of, and no more than_______ feet from a mobile home.A. 20B. 30C. 10D. 50

Identify the type of cable that is permitted in single- and multifamily dwelling units but that cannot be used underground, nor in buildings that are more than three stories above grade, nor in commercial garages, motion picture studios, theaters, places of assembly, elevator hoist ways, and other corrosive or hazardous locations, and what electrical code is universally used in the United States?