Even 120/208V electrical systems can create arc flashes with enough energy to burn exposed skin, ignite flammable clothing, and cause catastrophic or fatal injuries, according to OSHA. These incidents are not limited to high-voltage environments, posing significant risks for electrical tradespeople.
Many electrical tradespeople perceive low-voltage systems as inherently less dangerous. However, even 120/208V can generate arc flashes with sufficient energy to cause severe, potentially fatal, injuries. This perception often leads to an underestimation of arc flash safety principles for electrical tradespeople in 2026.
A widespread re-evaluation of low-voltage safety practices and a stricter enforcement of personal protective equipment (PPE) requirements are crucial to prevent avoidable injuries and fatalities in the electrical trades.
Why Low Voltage Still Poses a High Risk
Arc-rated PPE is necessary for low-voltage tasks, specifically 120/208 V, whenever energized components are exposed, according to Plant Engineering. This confirms the continuous hazard presence, regardless of voltage magnitude. However, Creative Safety Supply notes that NFPA 70E requires employees to wear arc-rated clothing when exposed to an electrical arc flash exceeding the threshold incident energy for a second-degree burn, which is a mere 1.2 cal/cm2. This discrepancy, between 'expected' and 'required' PPE, risks less rigorous compliance, leaving workers vulnerable to injuries below commonly perceived hazard levels.
NFPA 70E's mandate for arc-rated clothing at exposures above a mere 1.2 cal/cm2 (Creative Safety Supply) means even minor low-voltage tasks demand protection far beyond common assumptions. This exposes companies to significant liability and workers to preventable, severe burns. Despite the voltage level, the potential for severe injury necessitates the use of specialized arc-rated protective equipment whenever exposure to energized parts is possible.
