N3 Lesson 8 Quiz

Two recognized means of preventing injury during electrical equipment operation are.....

If a "hot” wire contacts a grounded enclosure, a ground fault results which normally will trip a circuit breaker or blow a fuse.

• True

• False

Using GFCI is one method to overcome grounding and insulation deficiencies.

• True

• False

Tags

NGSS.HS-PS2-5

Whenever the amount “going” differs from the amount “returning” by approximately , the GFCI interrupts the electric power within as little as 1⁄40 of a second.

• 10mA

• 8mA

• 6mA

• 5mA

Hazards are created when cords, cord connectors, receptacles, and cord- and plug-connected equipment are improperly used and maintained.

• True

• False

Generally, flexible cords are more to damage than fixed wiring

A flexible cord may be damaged by .

• door or window edges

• abrasion from adjacent materials

• staples or fastenings

• aging.

• All of the above

When a cord connector is wet, hazardous leakage can occur to the equipment grounding conductor

• True

• False

When the grounding conductor has a low enough resistance, no shock should be perceived.

• True

• False

GFCIs can be used successfully to electrical hazards on construction sites.

Tags

NGSS.HS-ETS1-3