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There are six conductors in a raceway connected to 75° rated breakers. Each wire has a 70-amp load using THHN conductors. The minimum size conductor used are #__________ AWG. a. 4 b. 6 c. 8 d. 10 - ANSWERa Thermal insulation shall not be installed within __________ inch(es) of recessed fixtures. a. 1⁄ b. 3⁄ c. 2 d. 3 - ANSWERd A 1-inch conduit contains three 3-wire circuits. All conductors are #10 TW. Each circuit consist of two phase conductors, one grounded conductor, and one equipment grounding conductor. The maximum ampacity of each phase conductor is__________ amps. a. 24 b. 28 c. 30 d. 35 - ANSWERa The volt/ampere rating of a device that consumes 14.5 amps on a 230-volt circuit is __________ watts. a. 3335 b. 244.
c. 15. d. 14.5 - ANSWERa A 208v, 3 phase heater draws 3,598 watts. How many amperes does it draw? a. 10 b. 12 c. 14 d. 16 - ANSWERa A 15 or 20-amp receptacle shall be located within _________ feet of a roof top air conditioner. a. 25 b. 35 c. 75 d. 100 - ANSWERa The maximum overcurrent protection for eight current carrying #12 THHN conductors in a 1⁄2" conduit is _________ amps. a. 10 b. 15 c. 20 d. 25 - ANSWERc An AC system of 50 to 1,000 volts shall be grounded if maximum voltage to ground does not exceed
volts. a. 50 b. 100 c. 150 d. 200 - ANSWERc
c. 277 d. 480 - ANSWERd An expansion joint is required for nonmetallic conduit. When the temperature changes from -15° to 105° Fahrenheit, the thermal expansion for 100 feet of rigid nonmetallic conduit is _________ inches. a. 3. b. 4. c. 4. d. 5.27 - ANSWERc The voltage rating of communications cables shall not be less than ________ volts. a. 50 b. 150 c. 300 d. 600 – ANSWERc A laundry branch circuit shall be rated at ________ amps. a. 15 b. 20 c. 25 d. 30 - ANSWERb In a commercial building, the minimum size underground service entrance conductor for a 120/ volt, 1 phase, 200-amp service is _________. a. 4/0 TW aluminum b. 3/0 THWN copper c. 2/0 XHHW aluminum d. 2/0 XHHW copper - ANSWERb The minimum service for a one-family dwelling shall be ________ amps. a. 60
b. 100 c. 125 d. 150 - ANSWERb Type __________ cable is not permitted for service entrance. a. MI b. MC c. SE d. UF - ANSWERd The direction of rotation of the rotor for three-phase motors can be reversed by interchanging any
leads. a. 2 b. 3 c. 4 d. 6 - ANSWERa A(n) ___________ receptacle may be included on the small appliance circuit. a. Water pump b. Electric clock c. Smoke detector d. Garage door opener - ANSWERb A light fixture that weighs more than _________ pounds shall be supported independently of the fixture box. a. 15 b. 25 c. 30 d. 50 - ANSWERd
c. 10 d. 12 - ANSWERa The minimum vertical clearance for service drop conductors above a pedestrian sidewalk is ________ feet. a. 8 b. 10 c. 12 d. 15 - ANSWERb The inspection authority shall be notified not less than _________ hours before an inspection is needed. a. 8 b. 16 c. 24 d. 32 - ANSWERc Fixed lighting units may be on a 30-amp branch circuit if they are _________ duty lamp holders. a. Light b. Medium c. Heavy d. Extra heavy - ANSWERc Boxes used in the floor shall be __________. a. Brass b. Metal c. Plastic d. Listed for the installation - ANSWERd A receptacle for laundry equipment shall be located within _________ feet of the intended location. a. 3 b. 4
c. 6 d. 8 – ANSWERc The minimum size rigid metal conduit or a commercial service rated for 150 amps, 120/240 volts, 3 wire single phase, using THWN wire, is _________ inches. a. 1 b. 1 1⁄ c. 1 1⁄ d. 2 - ANSWERb Round boxes shall not be used where conduits or connectors fasten to the __________ of the box. a. Hub b. Side c. Back d. Fittings - ANSWERb In a house, a garbage disposal may be installed with a cord and attachment plug if the cord is _________. a. Grounded b. Over 36 inches long c. Under 120 volts rated d. Nonmetallic sheath cable - ANSWERa Type _________ insulated conductors may be used in direct burial applications. a. THW b. THWN c. THHN d. USE - ANSWERd Edison-based type fuses shall not exceed ________ amps. a. 15
of the switch at its rated voltage. a. 50 b. 70 c. 80 d. 100 - ANSWERc MI cable shall be secured within __________ inches of a panel. a. 30 b. 36 c. 48 d. 72 - ANSWERd Auxiliary gutters shall not contain more than _________ current carrying conductors, without derating. a. 30 b. 50 c. 70 d. 90 - ANSWERa The minimum dimensions for a concrete-encased steel reinforcing bar electrode is _________ in length and _________ in diameter. a. 8 feet, 5/8 inches b. 10 feet, 1⁄2 inch c. 20 feet, 1⁄2 inch d. 20 feet, 2 inches - ANSWERc An electrical device which consist of a frame, plunger and coil, and is used to create a push or pull action is called a _________. a. Bender b. Solenoid
c. Level switch d. Motor starter - ANSWERb The ampacity of a #6 copper THHW conductor terminated in a switchboard rated at 75°C is ________ amps. a. 55 b. 65 c. 70 d. 75 - ANSWERb Conductor fill of a conduit nipple 24" or less in length shall not exceed __________ percent of its total cross- sectional area. a. 40 b. 55 c. 60 d. 65 - ANSWERc In a nonmetallic box, not larger than 2 1⁄4 inches by 4 inches, cable clamps are not needed if the NM cable is stapled within ___________ inches of the box. a. 6 b. 8 c. 10 d. 12 - ANSWERb Branch circuits larger than _________ amps shall supply only non-lighting loads. a. 20 b. 30 c. 40 d. 50 - ANSWERd
Short sections of ferrous metal raceway used for physical protection of the grounding electrode conductor shall be bonded at both ends to the ________. a. Ground bar b. Bonding screw c. Grounding electrode conductor d. Main bonding jumper - ANSWERc A feeder in a single-family dwelling supplies a load made up of 75 amps of electric space heating and 25 amps of air conditioning (cooling). The required capacity of the feeder is _______ amperes. a. 25 b. 50 c. 75 d. 100 - ANSWERc Where fuses are used for motor overload protection, a fuse shall be inserted in each ungrounded conductor and in the grounded conductor if the supply system is _______ AC with one conductor grounded. a. Four wire, multi-phase b. Four wire, three phase c. Three wire, three phase d. Three wire, single phase - ANSWERc Work installed by an electrical contractor can be concealed after _________. a. Applying for a permit b. Requesting an inspection c. Obtaining inspection approval d. A permit has been secured - ANSWERc The _________ exterior door of a dwelling unit is not required to be illuminated. a. Back
b. Front c. Garage vehicle d. Garage personnel - ANSWERc Where raceways are installed in wet locations above grade, the interior of these raceways shall be considered a ________ location. a. Wet b. Dry c. Damp d. Corrosive - ANSWERa The minimum number of small appliance branch circuits required in a dwelling unit is _________. a. 2 b. 3 c. 4 d. 5 - ANSWERa Where a conduit is used for physical protection for a cable, _________ is required. a. A conduit body b. A fitting at the end of the conduit c. A box to change from conduit to cable d. A staple to protect the cable from abrasion - ANSWERb The size of the main bonding jumper for on 800 kcmil aluminum conductor, per phase, with an aluminum main bonding jumper is ________. a. 3/ b. 4/ c. 250 kcmil d. 500 kcmil - ANSWERa
