Intelligent Power Today Magazine

While most discussions about arc flash involve the calculation methods and associated personal protective equipment (PPE), electricians have a number of ways to protect themselves and their gear, including arc-resistant equipment and remote actuation and racking systems that eliminate—rather than reduce—electrical arc-related dangers while providing quantifiable force and other preventive maintenance data that can help avoid future catastrophes.

Similar to any energy source, an electrical circuit is a ticking bomb. It is simply waiting for the right conditions to blow. A twisted pole, faulty interlock, and enough energy will turn an electrical firecracker into a mortal lightning strike. Moreover, what...

I recently viewed a destroyed 600-volt electrical panel board that had exploded when an operator reset an 800-ampere (A) breaker. His leather-palmed gloves had synthetic backs that ignited and seriously burned the back of his hands. His flame-resistant (FR) shirt was untucked and he was burned on his right side.

It is unfortunate that he was not following Canadian Standards Association’s CSA Z462 standard: “Workplace Electrical Safety” clause 4.3.7.3.10 (d). It is incredibly fortunate that his employer provided arc-rated clothing, as only a few years ago, he would have been wearing cotton coveralls.

Consequently, this incident would have resulted...