OSHA - Safety Certificate Electrical Safety Standards Questions and Answers Flashcards

What is the minimum approach distance for an unqualified worker near exposed energized parts operating at 50 kV?

Answer: 10 feet

OSHA 29 CFR 1926.416 requires unqualified workers to maintain at least 10 feet from overhead power lines energized at 50 kV or below.

Under OSHA's Lockout/Tagout standard, what must be done BEFORE servicing equipment that has stored electrical energy in capacitors?

Answer: The stored energy must be dissipated or restrained before servicing begins

OSHA 29 CFR 1910.147 requires that all potentially hazardous stored energy, including charged capacitors, be relieved or restrained before any servicing work begins.

Which OSHA standard specifically addresses electrical safety requirements for construction work?

Answer: 29 CFR 1926 Subpart K

29 CFR 1926 Subpart K covers electrical safety standards specifically applicable to construction industry workplaces.

What color is the standard insulation for a grounding conductor according to OSHA and NEC requirements?

Answer: Green or green with yellow stripes

OSHA and NEC standards require grounding conductors to be identified by green insulation or green with yellow stripes.

According to OSHA, what is the primary purpose of Ground Fault Circuit Interrupters (GFCIs) on construction sites?

Answer: To protect workers from electrocution caused by ground faults

GFCIs are required on construction sites primarily to protect employees from electrocution by detecting imbalances in current flow caused by ground faults.

Under OSHA regulations, at what voltage level must employers implement electrical safety work practices for employees?

Answer: 50 volts and above

OSHA considers 50 volts as the threshold above which electrical energy poses a significant risk of injury, requiring safety work practices.