Understanding the Importance of Proper Breaker Shop Services in Reducing Arc Flash Danger

Arc flash is a severe electrical hazard that can cause devastating injuries and even fatalities. The risk of arc flash is particularly high when working with electrical systems that operate at elevated voltages, such as those above 480 volts. In this article, we will explore the causes of arc flash, its dangers, and the importance of proper breaker shop services in reducing the risk of arc flash.

'480 Volt Arc Flash Boundary'

An arc flash can generate an electric arc with a temperature of approximately 35,000°C, which is four times hotter than the surface of the sun. This extreme heat can cause third-degree burns and impact injuries to anyone standing within 5 feet, while those standing 10 feet away may suffer severe burns and injuries that require hospitalization.

The causes of arc flash are often attributed to poor electrical contacts or insulation between energized metal pieces and other conductors. According to Ralph Lee, a life fellow of the IEEE, arc flashes can occur when there is inadequate maintenance, testing, and repair of electrical equipment.

Proper breaker shop services play a crucial role in reducing the risk of arc flash. These services include regular maintenance, testing, repair, retrofits, and retrofills of electrical equipment. By performing these services regularly, equipment owners can reduce the likelihood of arc flash incidents and associated personal protective equipment (PPE) requirements.

However, simply labeling equipment as 'arc flash-safe' is not enough to ensure safety. The 2018 IEEE 1584 calculation changes have significant implications for equipment owners, who must revisit their calculations even without system changes. It is essential to document and record the study review process to ensure compliance with NFPA 70E standards.

The new standard takes a more detailed approach to calculating arc flash incident energy and boundaries by considering factors such as enclosure size, bus bar configuration, and new formula components. This increased accuracy provides a more nuanced understanding of arc flash risks and helps equipment owners develop effective mitigation strategies.

In conclusion, proper breaker shop services are essential in reducing the risk of arc flash and associated PPE requirements. By understanding the causes of arc flash, its dangers, and the importance of regular maintenance and testing, equipment owners can ensure a safer working environment for personnel. Remember that knowledge and best practices are still what keep people safe from electrical dangers.

About the Author: Denise Green is a representative of Circuit Breaker Sales in Detroit, with extensive experience in the electrical industry. She has written several articles on arc flash safety and best practices in breaker shop services.

480 volt arc flash boundary