Electrical clearance requirements are the minimum distances the National Electrical Code (NEC) sets between wiring, panels, overhead conductors, and everything around them, and the exact figure depends on what the equipment is near. The NEC, published by the National Fire Protection Association, is the baseline safety standard for electrical installations in all 50 states, though local jurisdictions adopt it with modifications.1National Fire Protection Association. Understanding NFPA 70, National Electrical Code (NEC) As of early 2026, 25 states enforce the 2023 edition while 20 others still operate under the 2020, 2017, or even 2008 editions, so the version that governs your project depends on where you live.2National Fire Protection Association. Learn Where the NEC Is Enforced Check with your local building department before you rely on any single figure below.
Overhead Line Heights Above Ground
Service conductors, the power lines running from the utility pole to your building, have to hang high enough that nobody walks or drives into them. Height is always measured from the lowest point of the conductor’s sag, not from where the wire attaches. For standard 120/240-volt residential service:
- Sidewalks, platforms, and other foot-traffic areas: at least 10 feet.
- Residential driveways and commercial areas without truck traffic: at least 12 feet.
- Public streets, alleys, roads, truck-traffic parking lots, and agricultural land: at least 18 feet.
Higher-voltage lines require greater clearance, but those are usually utility-managed rather than something you handle directly.
Distance From Windows, Doors, and Roofs
Overhead service conductors have to stay at least 3 feet horizontally from any window that opens, and from doors, porches, balconies, and fire escapes. The rule applies to operable windows; a fixed pane of glass doesn’t trigger it.
Conductors passing over a roof must maintain at least 8 feet of vertical clearance above the roof surface, and that 8-foot zone extends 3 feet in every direction beyond the roof edge.3UpCodes. Overhead Service and Service-Entrance Conductor Installation Two exceptions cut that distance for conductors carrying 300 volts or less, which covers standard residential service:
- If the roof pitch is 4-in-12 or steeper, the clearance drops to 3 feet, on the reasoning that a steep roof is unlikely to be walked on.
- Where no more than 6 feet of conductor passes over 4 feet or less of roof overhang and terminates at a through-the-roof raceway or approved support, the clearance can be as low as 18 inches.3UpCodes. Overhead Service and Service-Entrance Conductor Installation
Working Space in Front of Panels
This is where most clearance violations happen in practice, and inspectors flag it constantly. Every electrical panel, breaker box, meter base, and service disconnect needs a clear working zone in front of it. NEC Section 110.26 sets three dimensions.
Depth. The working space must extend at least 36 inches out from the front of the panel. That figure applies to equipment rated up to 150 volts to ground under the simplest conditions. Higher voltages, or setups where live parts face grounded surfaces or other live parts across the space, require deeper clearances of 4 or even 5 feet depending on the configuration.4National Fire Protection Association. Electrical Space – The Final Frontier
Width. At least 30 inches, or the full width of the equipment if the panel is wider than 30 inches. This can be measured 15 inches each way from the center, or from one side, as long as the total clear width reaches 30 inches. The panel doors must open to at least 90 degrees within the space.4National Fire Protection Association. Electrical Space – The Final Frontier
Height. The clear zone runs from the floor up to 6.5 feet, or the height of the equipment, whichever is greater.4National Fire Protection Association. Electrical Space – The Final Frontier
Dedicated Equipment Space and Storage
Beyond the working space you stand in, the NEC protects a second zone called the dedicated equipment space. This is the area directly above and in front of the panel, from the floor to 6 feet above the top of the equipment. Nothing unrelated to the electrical installation can occupy it: no plumbing, no ductwork, no gas piping, no storage shelves. Sprinkler pipes and similar foreign systems are permitted above that 6-foot line, but only if protection is installed to keep leaks or condensation from dripping onto the equipment.
The NEC also prohibits using the working space itself for storage. No stacked boxes, no holiday decorations, no tools leaning against the panel. An inspector who sees a water heater, laundry basket, or shelving unit blocking the 36-inch zone in front of a panel will cite it. In an emergency, that clutter can be the difference between reaching the disconnect in seconds and not reaching it at all.
How Deep Buried Wiring Has to Go
Clearances aren’t just about overhead space. NEC Table 300.5 sets minimum burial depths for underground wiring, and a too-shallow cable can be sliced by a shovel, a fence post, or a piece of landscaping equipment.
- Direct-burial cable such as UF: at least 24 inches under normal conditions; 18 inches under residential driveways.
- Rigid metal conduit: only 6 inches under normal yard conditions, because the metal itself provides physical protection; 18 inches under driveways.
- PVC conduit: at least 18 inches, both under normal conditions and under residential driveways.
- Under streets and public roads: all methods require at least 24 inches of cover.
These are minimums. In areas where future digging is likely, going deeper is cheap insurance, and marking the trench route on your property records helps the next owner avoid the cable.
Clearances Around Pools, Spas, and Hot Tubs
Water and electricity produce the deadliest combination in residential settings, and the rules around pools are among the strictest in the code.
Overhead Lines
Overhead power lines must maintain at least 22.5 feet of vertical clearance above the water surface, the pool edge, diving platforms, and observation structures. That distance applies to insulated service-drop cables at standard residential voltages; higher-voltage uninsulated lines require 25 feet or more. No part of a pool, spa, diving board, or observation stand, and no area within 10 feet horizontally of those features, can be placed beneath existing overhead wiring.5UpCodes. Overhead Conductor Clearances
Receptacles, Disconnects, and Lighting
The disconnecting means that kills power to pool equipment has to sit at least 5 feet from the inside wall of the pool. Receptacles must be at least 6 feet from the inside wall, and every receptacle within 20 feet of the pool edge needs GFCI protection.6UpCodes. Lighting, Receptacles, and Equipment
Light fixtures installed at least 5 feet horizontally from the pool wall must be mounted no lower than 12 feet above the maximum water level. Existing fixtures closer than 5 feet must sit at least 5 feet above the water level, be rigidly attached, and have GFCI protection. Underwater wall-mounted lights must be installed with the top of the lens at least 18 inches below the normal water level, so that nobody can touch an energized fixture while standing in the shallow end.
Equipotential Bonding
Every permanently installed pool also needs an equipotential bonding system. All metal components of the pool structure, nearby metal fixtures, and the pool water itself must be electrically bonded together using a copper conductor looped around the perimeter. The bonding grid typically runs 18 to 24 inches from the pool wall, buried 4 to 6 inches deep, with connections at a minimum of four points evenly spaced around the pool. This eliminates voltage differences between metal surfaces, so that a swimmer touching a metal ladder and standing on a metal drain won’t complete a circuit. Fixed metal parts beyond 5 feet from the pool wall, or higher than 12 feet above the water level, are exempt from this bonding requirement.
Distance From Gas Meters and Propane Tanks
The NEC doesn’t directly set distances between electrical equipment and gas meters, but building codes, fire codes, and utility rules fill the gap. A common standard is a minimum 36-inch horizontal separation between a gas meter riser and the nearest edge of an electrical panel or meter. When either meter is enclosed in a cabinet, the measurement is taken from the outer edge of the cabinet rather than the meter itself. The distances are meant to prevent an electrical arc from igniting a gas leak at the meter or relief valve.
Propane installations fall under NFPA 58, the Liquefied Petroleum Gas Code. The required separation between a propane container’s pressure relief valve and any electrical source of ignition depends on container size and installation type. Utility companies and local fire marshals often impose stricter distances than the base code, so check with your gas provider and local building department before installing electrical equipment near any gas service point.
Communication Lines and Low-Voltage Wiring
Utility poles that carry both power and communication cables (telephone, cable television, internet) are governed mostly by the National Electrical Safety Code (NESC), a separate standard covering utility infrastructure. Where communication cables attach to a building near service conductors, a minimum vertical separation of 12 inches is standard practice.
If you’re installing a satellite dish, running low-voltage landscape lighting, or mounting a security camera near your service entrance, keep the wiring well away from the power lines. The utility handles pole-mounted separations; anything you install on your building or property is your responsibility to keep clear.
What a Clearance Violation Actually Costs
A building inspector who finds a clearance violation during a rough-in or final inspection will fail the inspection and require correction before issuing a certificate of occupancy. That can mean tearing out finished work, rerouting conductors, or relocating equipment at your expense.
Insurance is the other pressure point. Property insurers routinely deny coverage or cancel policies when they find electrical hazards, particularly outdated or non-compliant panels. Clearance violations alone may not trigger cancellation as quickly as a recalled panel brand, but an insurer who learns of code violations during a claim investigation has grounds to dispute the payout. A fire that started at a panel with blocked working space gives an adjuster the argument that the loss was caused by the homeowner’s negligence.
Beyond inspections and insurance, the distances exist for a physical reason. The 36 inches in front of your breaker panel is the space a firefighter needs to cut power during a structure fire, the space an electrician needs to safely diagnose a fault, and the space you need when a breaker trips at 2 a.m. and you’re reaching into an energized panel in the dark. Every figure in this article traces back to someone getting hurt because the distance wasn’t there.