Lineman apprentice - Study guides, Class notes & Summaries

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...

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...

Lineman apprenticeship Blue hoist rated for - Answer- Single 2000 lbs. double 4000lbs Green hoist - Answer- Single 1500 lbs. double 3000 lbs Red tag - Answer- Clearance tag- is the personnel protective indication of individuals at work. A clearance tag is placed for the designated " clearance holder" at the open points where hazardous energizing could occur before a clearance work authorized has been issued. Orange tag - Answer- DO NOT operate tag denotes the operational status of ...

Lineman Apprentice Distribution 1-1. Circle the correct answer to complete the sentence. A ______________________ steps down transmission voltage to distribution voltage. a) substation transformer b) pole-top transformer c) regulator d) step-up transformer - Answer- a) substation transformer 1-2. Circle the correct answer to complete the sentence. In a typical distribution system, electricity at ______________________ voltage is supplied to a customer. a) primary b) nominal c...

1-3 Apprentice Lineman Study Guide Whole numbers, along with the operations of ? make up the decimal system. - Answer- Addition, subtraction, multiplication, division Whole number system has how many digits? - Answer- 10 (0-9) The distance or number of units from 0 - Answer- Absolute value (which is always a positive number) Multiplication is a way to express ? - Answer- Repeat addition The result of division is known as? - Answer- Quotient Division of any number by zero is kno...