In the event of a short circuit, electrical installations can generate considerable amounts of heat that can cause severe burns or even death to non-protected people in the vicinity. In some cases, the plasma heat generated by the arc causes vaporization and explosive ejection of molten metal pieces. The amount of energy released depends on the short circuit duration and its intensity.

Thus, it is essential to define arc flash ratings from electrical panels using CSA Z462 standard. It is also important to equip workers with appropriate protective equipment, if they have to intervene in energized panels. In some cases, the energy level may be so high that no protective equipment can resist the arc flash. In such cases, the only remaining appropriate measure is to turn off the power before the intervention.

At 3E Ing., our experts can perform a complete arc flash hazard analysis for your electrical installation, and identify the appropriate electrical safety labels to be used for your electrical panels. Formation of the employes can also be given to sensitize the workers.