309A Electrical Safety and Personal Protective Equipment 1

Question 1

What does LOTO stand for in electrical safety procedures?

Accepted Answer

Lockout/Tagout

Answer

LOTO stands for Lockout/Tagout, a safety procedure that ensures dangerous equipment is properly shut off and isolated before maintenance begins.

Question 2

According to CEC Rule 2-308, what is the minimum clear working space required in front of panelboards rated at 600V or less?

Accepted Answer

900 mm

Answer

CEC Rule 2-308 requires a minimum of 900 mm of clear working space in front of electrical equipment operating at 600V or less.

Question 3

What class of rubber insulating gloves provides adequate protection for working on 600V systems?

Accepted Answer

Class 0 (rated to 1000V AC)

Answer

Class 0 gloves are rated for a maximum use voltage of 1,000V AC, providing the appropriate safety margin when working on 600V systems.

Question 4

What is the primary purpose of a Ground Fault Circuit Interrupter (GFCI)?

Accepted Answer

Protecting people from electric shock caused by ground faults

Answer

A GFCI detects ground fault currents as low as 4–6 mA and quickly opens the circuit to prevent lethal electric shock.

Question 5

Which of the following is NOT a recognized energy form that must be controlled under a lockout/tagout procedure?

Accepted Answer

Sound energy

Answer

LOTO procedures control electrical, mechanical, hydraulic, pneumatic, chemical, thermal, and gravitational energy, but sound energy is not a recognized hazardous energy source in this context.

Red Seal Electrician 309A Practice Test

Red Seal Electrician 309A Practice Test

309A Electrical Safety and Personal Protective Equipment 1