Arc-Resistant Equipment – A Risk Control Perspective

Arc-Resistant Equipment has gained popularity in North America since the late 90's. Arc-resistant equipment tested per the IEEE C37.20.7 protocol can provide an improved level of risk control associated with electrical hazards, specifically, arc flash. However, it does not eliminate the hazard, nor does it provide risk control under all circumstances. Like other capabilities of electrical equipment and risk control mechanisms, it provides value when properly applied, maintained, and used, but its value limited if otherwise. The capabilities and limitations of arc-resistant equipment could be considered from the perspective of the intended risk control. This paper will attempt to further such an understanding.