309A Electrical Safety and Personal Protective Equipment

Question 1

What does LOTO stand for in electrical safety procedures?

Accepted Answer

Lockout/Tagout

Answer

Load Off Tie Out

Answer

Line Override Transfer Operation

Answer

Lock On Tag Open

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

600 mm

Answer

1000 mm

Answer

1200 mm

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 00 (rated to 500V AC)

Answer

Class 1 (rated to 7500V AC)

Answer

Class 2 (rated to 17000V AC)

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

Protecting equipment from overload currents

Answer

Protecting circuits from bolted short circuits

Answer

Preventing voltage spikes from damaging appliances

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

Electrical energy

Answer

Hydraulic energy

Answer

Gravitational energy

Question 6

Which statement best describes arc flash?

Accepted Answer

A dangerous release of energy from an electric arc producing intense heat, pressure, and light

Answer

A grounding fault caused by moisture in a distribution panel

Answer

An overload condition that trips a circuit breaker

Answer

A high-frequency electrical interference caused by motor operation

Question 7

According to the CEC, in which locations is GFCI protection required in a residential installation?

Accepted Answer

In bathrooms, garages, outdoors, and unfinished basements

Answer

Only at outdoor receptacles

Answer

Only in bathrooms and kitchens

Answer

Wherever 15A duplex receptacles are installed