Extra low voltages include all voltages below which value?

Extra low voltages refer to electrical voltages that are considered safe to handle under normal conditions, minimizing the risk of electrical shock. The defining threshold for extra low voltage is typically set at 30 volts AC (alternating current) or 60 volts DC (direct current) in many electrical standards. This means that any voltage below 30 volts is categorized as extra low voltage, as it is deemed to be low enough to avoid harm to a person in most circumstances.

Choosing 30 volts aligns with safety regulations and guidelines established in various electrical standards, which prioritize the protection of individuals from electrical hazards. This classification is crucial for designing electrical systems that can be safely interacted with, especially in environments where accidental contact might occur.

The other voltage levels provided exceed this threshold, meaning they are not classified as extra low voltages and could pose higher risks of shock or injury under certain conditions. Understanding these classifications is essential for professionals working with electrical systems to ensure safety and compliance with established regulations.