It’s Not Left or Right: What’s the Real Safety Decision when Operating a Disconnect?

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It’s Not Left or Right: What’s the Real Safety Decision when Operating a Disconnect?

Common Question

I’ve heard the question hundreds of times in classes and job sites.

Someone demonstrates operating a disconnect and says, “Stand to the side when you throw it.”

And almost immediately someone asks, “Okay… but which side?”

People expect a clean answer. Left or right. Hinge side. Handle side.  Something they can memorize and repeat forever.

But the safest answer has always been the least satisfying one: There is no universally safe side.

Electrical safety isn’t about picking a position; it’s about understanding risk.

Why a Simple Action Isn’t Actually Simple

On the surface, operating a disconnect feels mechanical. You’re just moving a handle. Electrically, though, you are asking for metal contacts carrying current to separate or engage. That moment is one of the most stressful conditions electrical equipment ever experience.

Inside the enclosure, you can have worn contacts, contamination, loose terminations, insulation breakdown, or a connection that has been slowly deteriorating for years without anyone knowing. The act of switching may be the first time the equipment is forced to prove whether it can still hold together.

If it cannot, the failure doesn’t happen politely.

It can become an arc flash, a violent release of thermal energy and expanding plasma that produces heat hotter than the surface of the sun, pressure strong enough to move a person, and molten metal that becomes airborne. The reason we step to the side is simple: we are trying to not be directly in front of wherever that energy escapes.

But here’s the problem: you don’t really know where that escape path will be until you consider the condition of the equipment.

The Danger of Memorized Safety Rules

Over time our industry has created folklore:

“Always stand on the hinge side.”

“Always stand on the right.”

“Never stand near the handle.”

Those rules feel comforting because they’re easy to remember and follow. Unfortunately, electrical equipment that is failing does not behave consistently enough to justify those rules.

Arc energy escapes through the weakest point of the enclosure at that moment in time. Knowing where that weak point is depends on far more than the manufacturer’s drawing. Age, corrosion, loose hardware, internal damage, prior overheating, or even how the enclosure is mounted can change how a door or panel reacts during a fault.

The brand-new disconnect in a lab that is now a 30-year-old disconnect in a damp mechanical room is not the same device anymore.

When we teach a fixed “safe side,” we unintentionally teach people to stop thinking. And in electrical work, stopping the evaluation process is usually what gets people hurt.

What I Teach Instead

Before anyone touches a disconnect, I want them to pause for a few seconds and really look at it.

Then ask some questions:

Does the enclosure look square, or is it slightly twisted on the wall?

Are there heat marks around the door seam?

Does the latch(es) look tight or worn?

Are all the screws installed or is the 3/8” bolt missing?

Do you hear buzzing that wasn’t there before?

Was this recently worked on, or did it just trip?

Those observations matter more than what side you stand on. They may tell you the probability of failure has changed.

Next comes context.

Are you switching it under load?

Is this the first operation after maintenance?

Is it older gear with an unknown history?

Has infrared inspection shown elevated temperatures?

Every unknown adds uncertainty, and uncertainty raises the likelihood that the switching operation becomes an initiating event.

Then comes the energy level. Level of available voltage and higher available fault current don’t just increase danger – they change how cautious you should be with distance, PPE, and whether you should be doing it manually at all.

Only after thinking through those factors should we even talk about where to stand.

Positioning Is About Exposure, Not Sides

The real goal is simple: Keep as much of your body as possible out of the potential release path and minimize how you’re exposed.

That usually means offsetting your body away from the enclosure plane, turning your head away, holding your breath, and extending your arm instead of leaning in. Distance helps more than choosing a memorized side ever will.

Standing to the side is not a magic shield. It is just the final reduction of risk after you’ve already decided the task is acceptable to perform.

The Bigger Picture We Sometimes Forget

Body position is the last layer of protection, not the primary one.

The safest approach is still removing the hazard entirely by opening an upstream device. If that isn’t possible, remote operation is better than manual operation. Procedures and planning come next. PPE follows. Your stance in front of the equipment is the final small adjustment, not the foundation of safety.

When people focus only on “left or right,” they skip the decision-making that actually protects them.

The Habit Worth Building

I don’t want workers to remember which side to stand on. I want them to remember the thought process.

Pause.

Observe.

Consider the condition.

Consider the context.

Position yourself to reduce exposure.

So, when someone asks me which side to stand on, my answer is always the same: If you picked a side before you evaluated the risk, you’ve already chosen wrong.

Let e-Hazard Help with Your Electrical Safety Needs!

Contact e-Hazard if you have questions about our electrical safety training.

Or, if you know what class you need, see our current schedule to see what’s available. If you don’t see a class offered, let us know what you need!

Chris Fink

Chris has over 20 years of experience in the electrical safety field, particularly in industrial and commercial applications. For much of his career he was a Navy Seabee electrician, rising to the rank of Command Master Chief. In that capacity he was responsible for 450 sailors and officers in Command Naval Forces Korea. From 2011 to 2025, Chris served as the Electrical Safety Coordinator for Hampton Lumber. He created their electrical safety policy and provided safety, training, and auditing support for electricians at Hampton’s seven mills. Additionally, he supported engineers regarding NEC and NFPA 70E requirements as new projects were developed.

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