Final answer:
True, potential hazards of hot work like arc welding include electric shock and fatal electrocution, with necessary precautions such as protective gear and specific safety systems needed to mitigate these risks.
Step-by-step explanation:
True, electric shock and fatal electrocution are indeed potential hazards of hot work involving arc welding. When welding, precautions must be taken to protect against the thermal hazards and shock hazards associated with electrical currents. Welder's gloves and helmets are critical for protection, as they provide a barrier against the electric arc, which can cause severe burns or electrocution if a person comes into contact with the current. There are safety systems and devices such as plastic insulation, fuses, and circuit breakers designed to prevent such hazards. Overloading wires can lead to overheating, which is a thermal hazard, while the physiological reaction or injury from electric current passing through the body constitutes a shock hazard.