NCCER Electrical 1 Module 2

Which of the following is true regarding electrical shock?

• Most electrical incidents involve contact with high-voltage conductors (1,000v).

• The majority of electrical accidents involving electrically operated tools happen when the frame or case of the tool becomes energized.

• Construction workers are no more likely to be electrocuted than workers in other industries.

• CPR can be used to correct heart fibrillation following a shock.

A live-dead-live test is used to verify_.

• That a circuit is operating properly.

• The operation of a motor.

• That circuit is de-energized.

• The voltage of a known power source.

Most electrical injuries result from failure to_.

• Wear appropriate PPE.

• Document procedures

• Coordinate work activities.

• Follow safe work practices.

A barricade is an example of_.

• An administrative control.

• An engineering control.

• Worker awareness.

• Hazard elimination.

OSHA CFR 1910 is the standard for _____.

• For a safety work environment.

• General studies.

• general industry

• Construction & Maintenace.

OSHA CFR 1926 is the standard for _____.

• For a safety work environment.

• Construction industry

• general industry

• Construction & Maintenace.

Which factor determines the outcome of an electrical shock?

• The amount of heat.

• The amount of amprage.

• The amount of voltage.

• The amount of current

A test instrument can be verified for proper operation by using a(n) _____.

• proving unit

• Your hands

• Thermometer

• Testing unit.

A large percentage of electrical incidents are caused by changes in _____.

• Codes

• Materials

• scope

• Wires

Perception level. Slight tingling sensation.

• 1mA

• 5mA

• 6 to 30mA

• 50 to 150mA

• 1,000 to 4,300mA