Walk through almost any warehouse, back-of-house, or mechanical room in New Jersey and you will find it: an electrical panel with boxes stacked in front of it, a shelving unit pushed against it, or a mop and bucket parked where an electrician needs to stand. It seems harmless. It is actually one of the most common code violations in commercial buildings — and one an inspector will flag immediately.
The rule is NEC 110.26, and it exists for a simple reason: when someone has to work on an energized panel, they need room to do it safely, and room to get away fast if something goes wrong.
The three dimensions you have to keep clear
NEC 110.26 defines a “working space” in front of electrical equipment that must stay clear at all times. Three measurements:
- Depth — at least 3 feet. Measured straight out from the face of the panel. For higher-voltage equipment it can be more, but 3 feet is the baseline for standard commercial panels. This is the one people violate constantly by storing things in front of the panel.
- Width — at least 30 inches, or the width of the equipment, whichever is greater. The 30 inches does not have to be centered on the panel, but you need a full 30-inch-wide clear zone, and the panel door has to be able to open a full 90 degrees.
- Height — at least 6 feet 6 inches of headroom. Measured from the floor up. Nothing intruding into that vertical space in front of the panel.
Picture it as an invisible box in front of every panel: 3 feet deep, at least 30 inches wide, 6.5 feet tall. That box has to stay empty. Not “usually empty” — empty.
Dedicated equipment space — the part above the panel
There is a second, separate requirement people miss even more often. The space directly above a panel is dedicated equipment space, reserved for the electrical system and nothing else. It extends the width and depth of the equipment up to 6 feet above it (or to the ceiling, whichever is lower).
What that means in practice: you cannot run plumbing pipes, HVAC ducts, or sprinkler lines through the space above an electrical panel if they do not serve that equipment. We see this all the time in older buildings and rushed fit-outs — a water line or a duct routed right over the panel because it was the convenient path. It is a violation, and worse, a leak in that pipe drains directly onto live electrical equipment.
Why it actually matters — beyond passing inspection
It is easy to treat this as a paperwork rule. It is not. The clearances exist because:
- An electrician working on a live panel needs to move. If something arcs or faults, the reflex is to step back fast. Boxes stacked behind them turn a scare into an injury.
- Arc flash is real. An arc flash event releases enormous heat and pressure in a fraction of a second. Working space gives distance, and distance is protection.
- Access speed matters in an emergency. When a breaker needs to be shut off now, nobody should be moving shelving to reach it.
The clearance is not for the equipment. It is for the person standing in front of it.
Where this bites building owners
Two situations turn a blocked panel from “we’ll move it later” into a real problem:
At inspection. Whether it is new construction, a tenant fit-out, or a periodic inspection, a blocked panel or a pipe through the dedicated space is an easy citation. On a fit-out, that can hold up your certificate of occupancy — a finished space nobody can occupy until it is corrected.
After an incident. If there is an electrical injury or a fire and the investigation finds the working space was obstructed, the liability picture changes fast. “We were using it for storage” is not a defense anyone wants to make.
What to do about it
- Keep the 3-foot working space in front of every panel permanently clear. Not a temporary aisle — a permanent, marked keep-clear zone. Many facilities paint or tape the floor to enforce it.
- Do not store anything in front of, or hang anything on, electrical panels. This includes the well-meaning “we’ll just keep the ladder here” habit.
- Check what runs above your panels. If there is plumbing or ductwork in the dedicated space, it needs to be addressed.
- Factor it into layout early. On new construction and fit-outs, panel locations and clearances should be planned so storage and equipment do not end up competing for the same space later. This is part of what good preconstruction catches before it becomes a field problem.
Not sure if your panels are compliant?
If you manage a commercial or industrial facility and are not certain your panels meet clearance requirements — or an inspector has already flagged one — Nextgen Electric can evaluate your electrical rooms and distribution, correct clearance and dedicated-space violations, and relocate panels or equipment where needed.
We handle commercial and industrial electrical service, panel and distribution work, and construction throughout North Jersey. Call (201) 321-8949 or contact us.
