Apprentice lineman - Study guides, Class notes & Summaries

How do the voltage levels of transmission, sub-transmission, and distribution lines compare? - answer-High voltages used for AC transmission lines are 115,000; 138,000; 161,000 volts - Extra-High-voltage (EHV) Lines are energized at 345,000 - 765,000 volts. When are direct-current transmission lines used? - answer-Overhead direct-current transmission circuits are used where it is desired to transmit large amounts of power over long distances or to interconnect 2 AC systems that are not synchr...

The proper angle for setting up a ladder is to place its base a/an______ of the working length of the ladder from the wall or vertical surface. 4 to 1 or quarter The government organization whose purpose is to set and enforce work site safety and health standards is OSHA In general a beginning trades person with little or no experience in the electrical field is know as Apprentice All electrical equipment must be considered _____ before working on it. Energized If a scale...

Circle the correct answer to complete the sentence. A digger derrick with the pedestal at the back of the truck and the boom stored over the truck cab is known as a ______________________. a) rear mount b) side mount c) front mount d) corner mount → a) rear mount 1-2. Circle the correct answer to complete the sentence. The hole-boring tool of a digger derrick is called a(n) ______________________. a) bore-holer b) digger borer c) auger d) steager → c) auger 1-3. Cir...

Lineman Apprentice Test The difference in a 3 wire & 4 wire distribution circuit is? - Answer- the Neutral wire What is the formula for power - Answer- P=VxI Transmission voltage is generally _________ to _________. - Answer- 138,000 to 765,000 volts If the diameter of the pole to be set is 10", the diameter of the hole should be ____ to allow sufficient room for tamping. - Answer- 16", 3" on each side of the pole What are the component parts of a distribution system? - Answer-...

Lineman Apprentice Basic Electricity 1-1. Circle the correct answer. Which subatomic particles have an electrical charge? a) Neurons b) Electrons c) Photons d) Protons e) All of the above f) Both (a) and (b) g) Both (b) and (c) h) Both (b) and (d) - Answer- h) Both (b) and (d) 1-2. True or False. A proton has a negative charge, and an electron has a positive charge. - Answer- False 1-3. Circle the correct answer to fill in both blanks in the following sentences. Op...

1-1. True or False. Transmission lines form the electrical circuits that supply power directly to the customers serviced by a utility → False 1-2. Circle the correct answer to complete the sentence. The component that moves power from one point to another within a system is called a ______________________. a) grid b) conductor c) tower d) insulator → b) conductor 1-3. Circle the correct answer to complete the following sentence. Insulators are used to: a) isolate transmissi...

Apprentice Lineman Transformer Theory Why is a Closed Wye - Closed Delta primary neutral floated? - Answer- To prevent the backfeed of full primary voltage if a line cutout is blown. Why is a 4th cutout installed on the primary neutral of a closed Wye -closed Delta Bank? - Answer- To prevent Ferroresonance while switching. On an open transformer bank, what KVA capacity is the bank rated for? - Answer- 86.6% of nameplate ratings. Expain the term "Backfeed" - Answer- Feeding the prim...

The difference in a 3 wire & 4 wire distribution circuit is? the Neutral wire What is the formula for power P=IE E=IR Brainpower Read More Transmission voltage is generally _________ to _________. 138,000 to 765,000 volts If the diameter of the pole to be set is 10", the diameter of the hole should be ____ to allow sufficient room for tamping. 16", 3" on each side of the pole What are the component parts of a distribution system? Distribution Substation, feeder circuits, ...

2nd year Lineman Apprentice review (The Guidebook for Linemen & Cablemen 2nd Edition) What are 3 electrical clearances to be considered when designing a line? - Answer- 1.) Clearances from the ground, buildings, highways, railways, other circuits, and comm cables. 2.) Standards for minimum clearances between phases, energized parts, the structure and down guys. 3.) Standards for clearances to allow safer work Before digging, what other utilities should be located? - Answer- Electric, Gas, ...