NSC Electrical Safety Flashcards
6 cards from real NSC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 NSC Electrical Safety flashcards as text
What is the minimum approach distance for an unqualified worker near exposed electrical parts operating at 50 volts or greater?
Answer: At least 10 feet
OSHA 1910.333 requires unqualified workers to maintain at least a 10-foot distance from exposed energized electrical parts at 50 volts or greater.
According to the NSC, which of the following is the most common cause of electrical injuries in the workplace?
Answer: Contact with overhead power lines
Contact with overhead power lines is the leading cause of electrical fatalities in the workplace, particularly in construction.
What does GFCI stand for in electrical safety?
Answer: Ground Fault Circuit Interrupter
GFCI stands for Ground Fault Circuit Interrupter, a device that shuts off power when it detects a ground fault to prevent electrocution.
Which OSHA standard covers electrical safety requirements for general industry workplaces?
Answer: 29 CFR 1910.303–1910.399
OSHA 29 CFR 1910.303–1910.399 covers electrical safety design and work practice requirements for general industry.
What is the purpose of an Arc Flash Risk Assessment in the workplace?
Answer: To identify the incident energy levels of electrical equipment and determine required PPE
An arc flash risk assessment determines the energy level of potential arc flash events and the appropriate PPE category required.
Extension cords should NOT be used as a substitute for what in the workplace?
Answer: Permanent wiring
Extension cords are for temporary use only and must never replace permanent wiring, which is required for sustained electrical loads.