IEC Exam Study & Practice Questions With Verified Correct Answers | Updated

IEC Exam Study & Practice Questions With Verified Correct Answers | Updated Where a cable or raceway-type wiring method is installed through bored holes in joists, rafters, or wood members, holes shall be bored so that the edge of the hole is not less than ___ from the nearest edge of the wood member. - ANSWER 11/4 inch A cable, raceway, or box, installed in exposed or concealed locations under metalcorrugated sheet roof decking, shall be installed and supported so there is not less than ___ measured from the lowest surface of the roof decking to the top of the cable, raceway, or box. - ANSWER 11/2 inch Underground service conductors that are not encased in concrete and that are buried ___ or more below grade shall have their location identified by a warning ribbon that is placed at least 12 inches above the underground installation. - ANSWER 18 inches When installed in raceways, conductors ___ AWG and larger shall be stranded. - ANSWER 8 When eight (8) current-carrying conductors are in one conduit, the ampacity of each conductor is adjusted to ___ percent. - ANSWER 70 What is the circular mil area of a 3/0 AWG conductor? - ANSWER 167,800 Fittings and connectors shall be used only with the specific wiring methods for which they are ___. - ANSWER II & III only Where conductors carrying alternating current are installed in metal enclosures or metal raceways, they shall be arranged so as to avoid heating the surrounding metal by ___. - ANSWER induction Which of the following conductor arrangements is permitted by the NEC®? - ANSWER a or b only 207.8 - ANSWER a 207.10 - ANSWER I, II & III