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Multiple Choice

According to OSHA, voltage above which level is considered high voltage?

The key idea is the safety boundary OSHA uses to separate low voltage from high voltage for electrical hazard controls. OSHA regards voltages above 50 volts as high voltage because, under typical conditions, the potential current through a person can become sufficient to cause serious injury or death, especially if the skin is wet or the contact is across the body. This is why electrical safety programs require more stringent precautions—insulated tools, protective gear, proper procedures, and lockout/tagout—when dealing with voltages above that level. The other numbers don’t fit OSHA’s threshold for high voltage in general safety practice: 12 volts is typically considered low risk, 120 volts is commonplace mains voltage but not the defined boundary for high voltage, and 1000 volts is hazardous but the standard reference for the dividing line is 50 volts.

The key idea is the safety boundary OSHA uses to separate low voltage from high voltage for electrical hazard controls. OSHA regards voltages above 50 volts as high voltage because, under typical conditions, the potential current through a person can become sufficient to cause serious injury or death, especially if the skin is wet or the contact is across the body. This is why electrical safety programs require more stringent precautions—insulated tools, protective gear, proper procedures, and lockout/tagout—when dealing with voltages above that level. The other numbers don’t fit OSHA’s threshold for high voltage in general safety practice: 12 volts is typically considered low risk, 120 volts is commonplace mains voltage but not the defined boundary for high voltage, and 1000 volts is hazardous but the standard reference for the dividing line is 50 volts.