Second Year IEC Final Questions And Answers Rated A+

Anex _____ in the NEC contains examples of load calculations for dwellings. - Answer-D Which of the installations listed below would be a wet location? -a receptacle installed on the exterior wall of a building - a run of PVC conduit installed on a fishing pier -a luminaire installed on a parking lot pole - Answer-all of these Which of the following is an example of a bare conductor? - a 12 awg THHN copper wire - the bare ground wire contained within romex (NM cable) sheathing -the bare aluminum wire twisted with triplex - Answer-the bare aluminum wire twisted with triplex Which of the following statements is TRUE for an individual (or dedicated) branch circuit that is run in a conduit with other circuits? - Answer-it can share a neutral with another circuit Equipment designed to open circuits under ____ shall have an interrupting rating not less than the nominal circuit voltage and the current that is available at the line side of the equipment. - short circuit -overload -ground fault - Answer-all of these The NEC permits the insulation for an ungrounded conductor to be _____ in color. - orange -black -brown -yellow - Answer-any of theseWhich of the following locations requires that a three-way switch be installed at the lower landing and another three-way switch be installed at the upper landing to control the stair way lighting between the 1st and 2nd floors? - Answer-a townhome A 175- amp breaker protects a feeder that originates in a 277/480-volt, 3-ph, 4 wire service panel in an office building. Which of the following conductors is the smallest size permitted for the feeder ? - Answer-2/0 A 200-amp breaker protects a feeder that originates in a 120/240 volt, 3 ph, 4 wire service panel in a movie theatre. Which of the following THHN/THWN conductors is the smallest size permitted for the feeder ? - Answer-3/0 The maximum number of 3-pole circuit breakers used as service disconnects permitted in a 3 phase panelboard is ______. - Answer-6 Which of the following are characteristics of THHN/THWN insulation? - heat-resistant - a nylon outer covering or some equivalent - flame retardant -moisture-resistant - Answer-all of these For the purpose of determining the number of current-carrying conductors in a cable or conduit, the neutral _____ counted when the branch circuit is 120/240-volt, 1 phase, 3 wire connected to a 120/240- volt, 3 phase delta, 4 wire panelboard. Each of the two circuits carries 16 amps and serves resistive (linear) loads. - Answer-is not Where a 120/240 volt, 1 phase, 3 wire multiwire branch circuit is connected to a "split-wired" duplex receptacle in a barber shop, the branch-circuit OCPD/disconnect is permitted to be ______ i. two single-pole circuit breakers without handle ties ii. two single-pole circuit breakers with identified handle ties iii. a 2-pole circuit breaker - Answer-ii or iii onl