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2ND STAGE APPRENTICE LINEMAN STUDY GUIDE WITH COMPLETE SOLUTIONS
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When are rubber blankets due for retesting? - Correct Answers - Annually What are the three glove tests that must be performed? - Correct Answers - Physical, mechanical and visual Class 2 (yellow) rubber gloves are tested at _____v and rated use is ____v - Correct Answers - 20,000VAC and 17,000 rated volts Rubber gloves are due for testing ____ days after the test date - Correct Answers - 90 days When are you able to leave the the radio after calling for help? - Correct Answers - After the dispatcher verifies your information Name the steps of pole top rescue - Correct Answers - 1. Evaluate the situation
What bolt combination is used to mount a 600amp disconnect switch? - Correct Answers - (4) 7 1/2" carriage bolts, flat washers, lock washer and nuts When positioning a 600 amp switch, which way should it open in relation to a lightening arrester? - Correct Answers - Away from the lightening arrester Normally, 600amp switches open in which direction with relation to the normal feed direction? - Correct Answers - Opposite (open switch hangs dead) Switch lead sizes are related to their corresponding _____? - Correct Answers - Conductor size To keep your distance between you and the car ahead, you must maintain? - Correct Answers - At least one car length for each 10mph of speed What are the three positions of the directional control on a winch? - Correct Answers - Take up, neutral and pay out What type of transformers are connected to the primary phase conductors THROUGH protective devices including; a primary fuse cutout and surge (lightening) arrester? - Correct Answers - Conventional Transformer What type of transformer is also connected to the primary phase wire through protective devices and installed AS PART OF the transformer? - Correct Answers - Protected Transformer What transformer has a built in internal primary fuse link and secondary breaker for protection against secondary overloads and faults? - Correct Answers - Completely Self Protected Transformer What are four basic components common to all transformers? - Correct Answers - 1. Core
What are the two types of CT's used on secondary circuits? - Correct Answers - Window (donut) and Bar type CT's must be _____ before energizing the service? - Correct Answers - Shunted Each CT has a polarity marking (painted white dot on one end) and must be facing which direction? - Correct Answers - Same direction At what location should phase rotation be taken? - Correct Answers - Where there will be no changes made What must be performed prior to attaching the rotation meter to a service? - Correct Answers - A voltage check To change direction of rotation on a three phase 3-wire delta service, you should swap?