What are the acceptable oxygen levels in a confined space?

The acceptable oxygen levels in a confined space are critical for ensuring the safety of individuals working in such environments. The correct range for acceptable oxygen levels typically falls between 19.5% and 23.5%.

Levels below 19.5% can indicate an oxygen-deficient atmosphere, which poses a risk of asphyxiation and can impair cognitive and physical performance. Levels above 23.5% suggest a potential increase in the risk of fire and explosion since oxygen serves as a supporter of combustion. Therefore, the range of 19.5% to 23.5% is established as a safe working atmosphere, balancing the need for sufficient oxygen while minimizing the risks associated with oxygen excess or deficiency.

This understanding aligns with safety regulations and best practices in occupational health and safety when working in confined spaces, which is particularly pertinent for electricians and other workers in the electrical power field.