Electrical hazard footwear is work boot or shoe whose outsole and heel have been tested to resist electrical current, giving you a secondary layer of insulation if you accidentally step on or contact a live wire. To carry the EH mark, the sole must withstand 18,000 volts of alternating current for one minute with leakage staying under 1.0 milliampere. The protection is real, but narrower than most workers assume: it only holds when the boots are dry, undamaged, and unmodified, and it supplements other electrical safety measures rather than replacing them.
What the EH Rating Actually Tests
ASTM F2413 is the benchmark standard for protective safety-toe footwear in the United States, and it governs the EH designation.1ASTM International. F2413 Standard Specification for Performance Requirements for Protective (Safety) Toe Cap Footwear During EH testing, 18,000 volts at 60 hertz are applied to the outsole for a full minute under dry conditions. That last detail defines the rating’s limits. The test targets the outsole and heel assembly only, so anything above the sole is irrelevant to the EH label. If current can reach your foot through a crack, a worn spot, or a nail embedded in the tread, the rating is effectively gone regardless of what the tongue says.
Workers who don’t need a steel or composite safety toe have an equivalent option. ASTM F2892 covers soft-toe protective footwear and carries the same EH designation for electrical hazard resistance, so a lighter boot can still meet the electrical protection requirement.2ASTM International. F2892 Standard Specification for Performance Requirements for Soft Toe Protective Footwear
How to Confirm a Boot Is EH-Rated
Every compliant boot carries a permanent marking inside a rectangular border, usually stitched or stamped on the tongue, gusset, shaft, or quarter lining. The mark runs three lines: the ASTM standard and edition year, the gender and impact/compression ratings, and a third line listing additional protections. “EH” appears on that third line, alongside any other codes like PR (puncture resistance), Mt (metatarsal), Cd (conductive), or SD (static dissipative).
If EH isn’t printed on line three, the boot isn’t rated for electrical hazard protection, no matter how heavy-duty it looks. Safety inspectors check this marking during site audits. Check it yourself before buying.
EH Footwear Is Not Static Dissipative Footwear
This is where workers get hurt. EH and SD boots solve opposite problems, and wearing the wrong pair in the wrong environment can be fatal.
EH footwear insulates you from the ground. The sole is a barrier that blocks current from traveling through your body. SD footwear does the reverse: it allows a controlled path for static electricity to drain from your body into the ground, preventing sparks that could ignite flammable vapors or damage sensitive electronics. SD boots give no protection against live electrical circuits. The two labels sit on the same line of the ASTM marking, which makes the distinction easy to miss. A boot marked SD belongs in a fuel-handling facility or a semiconductor room. A boot marked EH belongs where accidental contact with energized wiring is the risk.
When EH Boots Aren’t Enough
Standard EH-rated boots are secondary protection for accidental contact in dry conditions. Higher voltage exposure, wet environments, or work near energized equipment calls for something more. ASTM F1117 covers dielectric overshoes, rubber galoshes worn over existing footwear that add insulation against energized conductors.3ASTM International. F1117 Standard Specification for Dielectric Footwear Each pair is proof-tested at its rated voltage before shipping. NFPA 70E references dielectric footwear for protection against step and touch potential, and notes that standard EH footwear only applies under dry conditions. Lineworkers and substation electricians typically layer dielectric overshoes over their EH boots for that reason.
What OSHA Requires of Employers
Two regulations work together. 29 CFR 1910.136 requires employers to ensure workers use protective footwear when they face electrical hazards that remain after other protective measures have been taken.4eCFR. 29 CFR 1910.136 – Foot Protection 29 CFR 1910.132 lays out the broader PPE framework.
Hazard Assessment
Before selecting any PPE, the employer must assess the workplace to determine whether hazards requiring protective equipment exist. If electrical hazards are present, the employer selects footwear that addresses them and communicates that decision to each affected worker. The assessment must be certified in writing, identifying the workplace evaluated, the person who conducted it, the date, and a statement that the document is a certification of hazard assessment.5eCFR. 29 CFR 1910.132 – General Requirements Missing paperwork is one of the most common OSHA citations in this area.
Payment and Training
Required PPE, including EH footwear, must be provided at no cost to employees. Training must cover when and why the footwear is necessary, how to fit and adjust it, the limitations of the protection, and how to care for, maintain, and replace it. Workers have to demonstrate understanding before performing work that requires the equipment, and retraining is required when conditions change or comprehension gaps appear.5eCFR. 29 CFR 1910.132 – General Requirements
The limitations piece deserves emphasis. Workers need to know that EH boots are rated for dry conditions only, that worn or damaged soles void the protection, and that aftermarket modifications can compromise the rating. Handing someone a pair of boots without that context does not satisfy the regulation.
Penalties for Noncompliance
OSHA adjusts civil penalties annually for inflation. As of January 2025, a serious violation carries a maximum of $16,550 per instance and a minimum of $1,221. Willful or repeated violations run from $11,823 up to $165,514.6Occupational Safety and Health Administration. 2025 Annual Adjustments to OSHA Civil Penalties Failure-to-abate violations can stack up to $16,550 per day past the deadline. These figures are per violation. Ten workers sent into an electrical hazard zone without proper footwear can produce ten separate serious citations, and that is before workers’ compensation and wrongful-death exposure enter the picture.
What Compromises the EH Rating
The rating reflects performance in a lab under controlled conditions. Real jobsites are harder on boots than any test chamber, and several common factors will reduce or eliminate the electrical resistance the outsole provides.
Moisture
Water conducts electricity. When the sole, insole, or interior of the boot is wet, current can bypass the insulating material. The EH rating is explicitly valid only for dry conditions. Boots soaked by rain, standing water, or heavy perspiration are not reliable for electrical protection until fully dried.
Damage and Wear
Cracks, punctures, deep cuts, and excessive tread wear reduce the thickness and continuity of the insulating barrier. There is no universal mileage number for when a sole is too thin, because wear depends on body weight, gait, and the surfaces you walk on. Age isn’t the standard. Physical condition of the outsole right now is.
Conductive Contaminants
Metal shavings, screws, nails, or wire fragments lodged in the tread create a direct path through the sole. A single staple in the rubber can turn a compliant boot into a conductor. Regular cleaning and visual checks are the only defense.
Aftermarket Modifications
Replacing factory insoles or adding aftermarket footbeds can compromise the boot’s tested configuration. ASTM F2892 warns that changes to original components, including replacing or adding inserts, could cause the footwear to fail the standard and void the protective marking.2ASTM International. F2892 Standard Specification for Performance Requirements for Soft Toe Protective Footwear The same logic applies to F2413-rated boots. If you need a custom insole, check with the manufacturer before swapping anything.
Inspecting and Replacing EH Boots
Boots rated for electrical protection should be visually inspected before each shift. It takes about thirty seconds. Check the outsole for embedded metal, cracks, deep gouges, and areas where the tread has worn smooth. Check the interior for moisture. Check the upper for separation from the sole.
If damage reaches into or through the sole material, replace the boots. If they got wet and you can’t fully dry them before the next exposure, don’t wear them into an electrical hazard area. The cost of a replacement pair is trivial next to the consequences of a ground-fault path through your foot.