NCCER 26208-17 Questions and Answers Already Graded A

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NCCER 26208-17 Questions and Answers Already Graded A To properly install heat-shrink insulators, _____. ✔✔Slip the insulator over the connector and apply heat for a few seconds When used in c ... ontrol cable, which of the following must be grounded in order to be effective? ✔✔Drain wires To determine the correct connector size for MC cable, _____. ✔✔Refer to the manufacturer literature Burnishes, nicks, and scrapes are generally the result of which of the following? ✔✔Poorly stripped conductors When stripping conductors, be sure to _____. ✔✔Cut the insulation so that no frayed pieces or threads extend past the point of cut off Which of the following inscriptions on a wire connector indicates that it is designed for use on both copper and aluminum wire? ✔✔AL-CU A true statement concerning solid versus stranded conductors is _____. ✔✔The diameters are different Wire connectors marked only with the wire size should only be used on _____. ✔✔Copper conductors A good electrical connection should ____. ✔✔Be mechanically and electrically secure Heat-shrink insulators are intented to provide _____. ✔✔Strain relief and much protection Before a splice or connection can be made to a Type THHN conductor, the _____. ✔✔Conductor ends must be stripped and cleaned Which of the following is true of drain wires in fire alarm and instrumentation cable? ✔✔Only one end is typically grounded How can you determine the wire size that can be used effectively with an insulated barrel crimp connector? ✔✔It is indicated by the color-coding of the insulation on the connector The best electrical tape to use as a pretective overwrap on high-voltage cables is _____. ✔✔High temp silicone rubber Which of the following eliminates the need for taping and the use of filler tape? ✔✔Motor connection kit To position cable so that it is not under tension, it is necessary to _____. ✔✔Train conductors Stripped wire should be inserted into the barrel of the crimper until _____. ✔✔The insulation butts against the foward stop How should terminal space be measured from the end of the lug or wire connector? ✔✔In a straight line When installing mechanical connectors, which of the following is used to prevent the formation of surface oxides? ✔✔An oxide-inhibiting joint compound The NEC section that governs electrical connections and splices is _____. ✔✔NEC section 110.14 [Show More]

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