EGII W2W

What system can a line worker safely work on one energized phase, bare-handed, without risking electrocution?

pg.40

• WYE

• DELTA

• 3 wire WYE

• 4 wire WYE

Which system requires more current?

pg.40

• DELTA

• WYE

• 4 wire WYE

• 3 wire WYE

What is a short circuit in a delta system?

pg40

• Phase-Ground

• Phase-Phase

• Phase to Neutral

• Squirrel

What is a WYE system without a neutral called?

pg.41

• Delta

• 4 wire WYE

• 3 wire WYE

• Single phase

Why are four wire WYE systems more likely to experience electrical interruptions?

pg.41

• There is no neutral

• Neutral is in close proximity to phases

• Fault amps are higher

• There are more squirrels on these systems

Single phase tap lines consist of two phases on a Delta and 3 wire WYE system.

• True

• False

Which system is most widely used throughout the electrical industry?

pg.42

• 4 wire WYE

• 3 wire WYE

• Delta

What provides an immediate and reliable path to the source?

pg.42

• Opposite phase

• Neutral

• Ground

• Difference in potential

What is the only way to determine the true identity of a Delta or 3 wire WYE?

pg.42

• No neutral

• Secondary connections at substation transformer

• Check voltage

• Check amperage

Which system is considered to be more efficient?

pg.40

• WYE

• Delta