In high-voltage environments, what you can’t see can kill you. While traditional open-air substations display their isolation points and energized components out in the open, enclosed switchgear conceals its dangers behind metal panels and doors. In this episode, we sit down with industry safety expert George T. Cole (CUSP, CESCP, CESW, CIT, SGE) to dissect why switchgear design creates unique, deadly hazards—from complex internal cross-connects to the explosive threat of an “Arc-in-a-Box”.

George breaks down the crucial difference between OSHA’s often misunderstood term “deenergized” and NFPA 70E’s 8-step process for establishing an Electrically Safe Work Condition (ESWC). We examine real-world case studies where simple, routine jobs nearly turned fatal due to human error precursors like overconfidence, poor work order instructions, and an overreliance on “tribal knowledge”. Finally, we explore how utility safety professionals can elevate their careers and eliminate the dangerous “we’ve always done it that way” mindset through the Utility Safety & Ops Leadership Network (USOLN) and the Certified Utility Safety Professional (CUSP) credential.

Key Takeaways

• Unique Design = Unique Hazard: Unlike traditional open-air substations where clearance points and conductors are visible, switchgear conceals energized parts behind panel doors, placing workers inside shock boundaries or minimum approach distances the moment a cover is removed.

• Compliance is Only the Bare Minimum: Relying solely on OSHA regulations helps avoid fines, but ESFI injury data shows it isn’t enough to stop severe electrical shocks and burns in the utility sector.

• Transition to ESWC: Rather than assuming equipment is safe because it is labeled “deenergized,” crews must complete NFPA 70E’s systematic 8-step process to verify an Electrically Safe Work Condition (ESWC).

• Live-Dead-Live Protocol: Performing Live-Dead-Live voltage testing at each specific point of work and before moving between internal compartments serves as a vital final barrier against electrical accidents.

• Eliminate “Tribal Knowledge”: Relying on informal habits, handwritten notes on cabinet doors, or the mindset of “we’ve always done it that way” are primary error precursors that lead to catastrophic failures.

Questions & Answers

Q1: Why is the term “deenergized” so easily misunderstood in high-voltage switchgear work, and how does NFPA 70E solve this?

Answer: OSHA defines “deenergized” as being free from electrical connections to a voltage source. However, under OSHA utility regulations, equipment operating above 600V must also have correctly installed Temporary Protective Grounds (TPGs) forming an Equipotential Zone (EPZ) before it can be worked on as deenergized. Without TPGs, it must still be treated as energized. NFPA 70E removes this ambiguity by replacing subjective assumptions with an Electrically Safe Work Condition (ESWC)—a strict, mandatory 8-step verification process that requires reviewing up-to-date drawings, isolating all feeds, testing for absence of voltage at each point of work, and applying grounds.

Q2: What human performance factors contributed to the near-fatal switchgear incidents highlighted in the case studies?

Answer: In the presentation’s case studies, the primary human error precursors included inaccurate risk perception, overconfidence, complacency, high workloads, and poorly written work orders. In one case, an electrician relied on an unauthorized handwritten note on a cabinet door, which caused him to miss exposed, uninsulated 13.8kV wires in an adjacent cubicle. Both incidents highlighted that the single biggest driver of electrical accidents is an over-reliance on “tribal knowledge” and a culture that accepts the paradigm “we’ve always done it that way.”

 

Learn more, view the schedule, or register for the event at the iP Utility Safety Conference & Expo. Connect with George Cole – https://www.linkedin.com/in/george-cole-cescp-cusp-cesw-cit-sge-57921851/ #ElectricalSafety #UtilitySafety #SwitchgearHazards #CUSP

Editor’s note: In the following account, a bucket truck wreck blocks the only active traffic lane on an icy New York highway, posing an immediate safety threat. Nothing in this account should be considered professional crash response guidance. Readers should understand that untrained individuals who move crash victims could unintentionally cause them further injury.   While driving on St. Patrick’s Day this year, I discovered part of the New York State Thruway had been reduced to a single traffic lane due to icy conditions. I briefly considered taking the back roads instead, but heavy local traffic and closely spaced stoplights made that option feel just as risky. Moments later, I watched a tractor-trailer slide off the road ahead of me. Shortly after that, I increased my following distance as I noticed a fleet of bucket trucks attempting to merge onto the Thruway, knowing it can be difficult to stop such large trucks even in good weather conditions. Behind me, drivers were growing impatient. I remember a red vehicle that seemed particularly determined to push forward despite the slick pavement. The longer I observed what was happening around me, the more uneasy I became. Then, within seconds, everything unraveled. As I watched the merging fleet, the last truck in line suddenly swerved sharply to the right, then back left, spinning until it faced oncoming traffic. When the passenger-side wheels caught dirt, the truck flipped twice. Immediate Action I reacted immediately, knowing I had to help given the truck’s position in the roadway and the continued icy conditions. With my hazard lights already on, I shifted into neutral and coasted into the left lane to warn other motorists and create a safety buffer. The bucket truck’s boom had fully extended during the rollover, just before slamming down and crushing the cab as the vehicle completed its second flip and came to rest on the driver’s side. As I cautiously walked toward the truck, I could see two men in the cab. The driver, pinned beneath debris, appeared to be unconscious. The passenger was dazed but awake. I began to offer the passenger calm, direct instructions from outside the vehicle, urging him to kick out the windshield with my assistance. Shaken and confused, he asked if he was alive or speaking to an angel. I kept my response simple: He had been in a serious accident and help was there. The passenger’s adrenaline began to course through him. With my encouragement, he found the strength to kick the windshield while I pulled it free. Once out of the vehicle, shock quickly set in; the passenger began running, putting himself and others at risk on the icy roadway. A calm steadiness washed over me then, helping me to soothe the passenger and guide him to a safe area before shifting my attention to the driver. He was still pinned in place inside the truck, blood visible, his head beginning to swell. However, I could see movement in his neck artery, a critical sign. When I asked the driver if he could hear me, he responded by calling out for his wife, which gave me a small sense of relief because it meant he could still hear, feel and respond. Carefully, the passenger and I freed the driver from the wreckage and placed him on the snow-covered ground. A state trooper arrived at that moment, flooding my body with relief and shock. After quickly relaying information about the wreck, emergency crews began to take over. Aha Moment I got back on the road soon afterward but pulled off at the next exit. My emotions began to surface as I sat in a truck stop parking lot, still gripping my steering wheel. A knock at my window broke the silence. Two linemen who had witnessed the crash but couldn’t safely stop at the scene had pulled in to check on me. My instinct was to tell them I was fine, but I wasn’t. After washing up, they stayed with me at the truck stop, offering coffee, chips and a chocolate bar. What was meant to be a quick check-in turned into nearly an hour of quiet support. The linemen didn’t leave until I felt OK to get moving again. That is when the true meaning of being my brother and sister’s keeper fully clicked for me. Caring for one another comes in many forms. In a sense, we are all first responders, whether that means helping in the aftermath of an accident or sitting down with an industry peer who has just witnessed a traumatic event. There is also a second point to recognize here: What we give to others has a way of coming back to us. The people we encounter throughout our lives add to our wisdom, and we carry that with us wherever we go. Keeping Your Eye on the Prize Saves Lives My one nonnegotiable goal each day is making it home to see my family. Each decision I made on the Thruway earlier this year offered me a way to help others while also guarding my personal safety. Still, although everyone survived, I recognize that the outcome could have been very different. This is why preparation matters. For instance, rescue equipment isn’t useful where it’s inaccessible, and in the crash, the equipment was stored on the driver’s side – the same side the truck ultimately landed on. Keep in mind, too, that simple measures can make an enormous impact. Consider what could have happened to the driver and passenger had they not been wearing seat belts. Understand that unsecured items inside the cab can become dangerous debris. Conclusion Some moments stay with us forever. Since March, I haven’t gone 24 hours without recalling what those two men went through and contemplating what each of us could have lost that day. One particularly unforgettable detail is the shirt I wore that fateful St. Patrick’s Day, emblazoned with the words “So Lucky.” Somehow, despite everything that had happened, those words felt true. About the Author: Tiffany Celotto, CUSP, is a long-standing member of IBEW Local 1249 and serves as a safety coordinator for New York-based O’Connell Electric Co. Her years of hands-on experience working in the field have helped shape her approach to safety, giving her firsthand understanding of the challenges workers face every day. Celotto is passionate about building a strong safety culture in which people feel empowered to be their brother and sister’s keeper.