SEPTA Bus Mechanic – Electrical, Mechanical, And Safety Practice Test

Working on electrical components above 50 volts requires PPE that protects against shock and arc flash, chosen according to NFPA 70E standards. Insulated gloves rated for the voltage provide a barrier for the hands, preventing current from entering the body. A face shield protects the face and eyes from arc flash and flying debris. Dielectric footwear helps reduce the path of current through the body if contact or step potential occurs. Arc-rated clothing adds burn protection by withstanding a certain amount of heat energy from an arc flash. Together, these items address both shock and arc-flash hazards that arise at higher voltages. Safety goggles alone don’t shield against arc flash or shock, standard work gloves lack voltage ratings, and no PPE is not acceptable for voltages above 50 volts.