Quiz 2 Review

What are the two recognized means of preventing injury during electrical equipment operations?

• Insulation & Testing with an ohmmeter

• Grounding & Testing with an ohmmeter

• Insulation & Wearing gloves

• Grounding & Insulation

The GFCI is a fast acting circuit breaker that senses ______ in the circuit caused by current leakage to ground and in a fraction of a second shuts off the electricity.

• a short

• phase loss

• small imbalances

• overloads

What should be done to prevent floorboards from slipping off rolling scaffolds?

• They should be tie-wired to the horizontal bracing.

• They should be cleated on the underside.

• They should be nailed securely in place.

• Require toe boards to hold them in place.

When erecting a scaffold, use _____ instead of blocking to adjust to uneven grade conditions.

• adjusting screws

• castes with plain stems

• cleats

• horizontal cross braces

Select all that apply.

What tests does OSHA require under the assured equipment grounding conductor program?

• A continuity test to ensure that equipment grounding conductors are electrically continuous.

• A strain test on all cord caps, plugs, and receptacles to ensure conductor continuity is maintained.

• A test of receptacles and plugs to ensure that the equipment grounding conductor is connected to its proper terminal.

The three basic insulation temperature ratings listed fro the conductors used fro general wiring are _______. The ________ temperature that the conductor is exposed to along its entire length shall be used when determining the temperature rating of a conductor.

• 40°C, 75°C, and 90°C / maximum

• 40°C, 75°C, and 90°C / minimum

• 60°C, 75°C, and 90°C / maximum

• 60°C, 75°C, and 90°C / minimum

_____ associated with the flow of current in a conductor is one of the most significant factors to be considered in designing electrical systems. The conductor's rating is dependent upon its type of _______.

• Voltage / electrical insulation

• Voltage / heating

• Heat / electrical insulation

• Heat / voltage

When choosing a conductor, the type of insulation selected depends upon the _____ of the conductor.

• condition or type

• condition of use

• voltage applied

• current condition

Copper conductors installed in _______ require support at _______ intervals than are required for aluminum conductors.

• conduit systems / shorter

• armored cable / longer

• horizontal raceways / longer

• vertical raceways / shorter

Because the surface of aluminum conductor oxidizes readily, terminations are generally made with the aid of ________ designed to prevent the oxide from reforming in the installation process.

• copper coating

• dissimilar metals

• joint compounds

• stainless steel coating