SLTC Final review
What is the pole ground made out of and what size of wire? - answer is typically #4 or
#6 copper
What is required with some companies with working on multiple pole projects? - answer
Bracket grounding
The pulling and tensioning equipment used should always be what? - answer Grounded
What do you need to do before each job? - answer Have a job briefing
What does OHSA not require? - answer They don't require you to ground your trucks
On a capacitor, OSHA requires what? - answer They require you to wait 5 minutes after
de-energizing the capacitor before short-circuiting and grounding the terminals to bleed
off any charge
Personal protective grounding conductors for underground lines and equipment must
never be smaller than what? - answer#2 AWG Copper
What are Portable feed-through buching used for? - answerThey are used to isolate,
test, and ground a circuit
What is a grounding eblow rated for? - answerThey are fully rated for fault current
The insulated protective cap is used to cover what? - answerDead-front equipment
What are Vectors? - answerThey are lines that have both magnitude and direction
What is a vector used for? - answerThey are used for graphical representation of the
current flow through the windings of a transformer
What are vectors referred to? - answerPhasors
What are the voltages for a WYE system? - answer120/208 or 277/480
What are the voltages for a Delta system? - answer120/240 or 240/480
What needs help and each transformer connects to two phases and the adjacent
transformer? - answerDelta Banks
, What stands alone and each transformer connects to the only phase? - answerWYE
Banks
What can a WYE bank not be? - answerIt cant be an open bank only a closed bank
What does OSHA require you to do before working on energized conductors? -
answerTest with a Multi-range volt testers
How many times per mile a line should be grounded? - answer4 times per mile
Doubling the length of the ground rod into the earth will typically reduce the ground
resistance by _______ while doubling its diameter only reduces resistance by ______ -
answer40% and 10%
What are the four important steps to properly grounding lines - answer1.) Identify/ Job
Breifing
2.) Isolate
3.) Test
4.) Ground the section of the line has been isolated and tested
What does OSHA require before each job? - answerA Job Briefing
What should you put on the lines when you are down somewhere else fixing something
- answertags or blocking devices
What are the two most commonly used clamps for grounding? - answerC-Clamp or
Snap on (Duckbill) clamps
The IEEE guide for protective grounding says that the mechanical force of a jumper with
a fault current range of ________ to _________ can reach what? - answer30Kva to
60Kva and can reach 450 foot pounds
Personal Protective grounding cables must never be smaller than what? - answer#2
AWG ccopper
What are the four main ground sources commonly available when working on the
distribution system? - answer1.) The system neautral
2.) Driven ground rods
3.) Temporary ground rods
4.) Anchor rods
How many steps should be used when checking the continuity of a transformer? -
answerThere are 6 steps
What step will show continuity of a transformer - answer1.) H1 to H2
2.) X2 to X1
What is the pole ground made out of and what size of wire? - answer is typically #4 or
#6 copper
What is required with some companies with working on multiple pole projects? - answer
Bracket grounding
The pulling and tensioning equipment used should always be what? - answer Grounded
What do you need to do before each job? - answer Have a job briefing
What does OHSA not require? - answer They don't require you to ground your trucks
On a capacitor, OSHA requires what? - answer They require you to wait 5 minutes after
de-energizing the capacitor before short-circuiting and grounding the terminals to bleed
off any charge
Personal protective grounding conductors for underground lines and equipment must
never be smaller than what? - answer#2 AWG Copper
What are Portable feed-through buching used for? - answerThey are used to isolate,
test, and ground a circuit
What is a grounding eblow rated for? - answerThey are fully rated for fault current
The insulated protective cap is used to cover what? - answerDead-front equipment
What are Vectors? - answerThey are lines that have both magnitude and direction
What is a vector used for? - answerThey are used for graphical representation of the
current flow through the windings of a transformer
What are vectors referred to? - answerPhasors
What are the voltages for a WYE system? - answer120/208 or 277/480
What are the voltages for a Delta system? - answer120/240 or 240/480
What needs help and each transformer connects to two phases and the adjacent
transformer? - answerDelta Banks
, What stands alone and each transformer connects to the only phase? - answerWYE
Banks
What can a WYE bank not be? - answerIt cant be an open bank only a closed bank
What does OSHA require you to do before working on energized conductors? -
answerTest with a Multi-range volt testers
How many times per mile a line should be grounded? - answer4 times per mile
Doubling the length of the ground rod into the earth will typically reduce the ground
resistance by _______ while doubling its diameter only reduces resistance by ______ -
answer40% and 10%
What are the four important steps to properly grounding lines - answer1.) Identify/ Job
Breifing
2.) Isolate
3.) Test
4.) Ground the section of the line has been isolated and tested
What does OSHA require before each job? - answerA Job Briefing
What should you put on the lines when you are down somewhere else fixing something
- answertags or blocking devices
What are the two most commonly used clamps for grounding? - answerC-Clamp or
Snap on (Duckbill) clamps
The IEEE guide for protective grounding says that the mechanical force of a jumper with
a fault current range of ________ to _________ can reach what? - answer30Kva to
60Kva and can reach 450 foot pounds
Personal Protective grounding cables must never be smaller than what? - answer#2
AWG ccopper
What are the four main ground sources commonly available when working on the
distribution system? - answer1.) The system neautral
2.) Driven ground rods
3.) Temporary ground rods
4.) Anchor rods
How many steps should be used when checking the continuity of a transformer? -
answerThere are 6 steps
What step will show continuity of a transformer - answer1.) H1 to H2
2.) X2 to X1
