How is high voltage defined?

• A. Anything over 500 volts
• B. Anything over 750 volts
• C. Anything over 1000 volts
• D. Anything over 1500 volts

Answer: (B)

In the context of electrical systems, high voltage is typically defined as any voltage level that exceeds 750 volts. This definition is based on various industry standards and regulations, including those outlined by organizations such as the International Electrotechnical Commission (IEC) and the National Electrical Code (NEC).

When working with electrical equipment, understanding that high voltage refers to levels above 750 volts is crucial for safety and operational standards. It helps in establishing proper safety measures, protective equipment, and protocols necessary for working around such voltages. Knowing this threshold allows professionals in the mining and electrical industries to ensure they are following the regulations that protect workers from risks associated with high voltage, which can include electric shock, burns, and other serious injuries.