Electrical Hazard (EH) and ESD Shoe Ratings Explained

The two ratings are not interchangeable

Electrical hazard (EH) and electrostatic discharge (ESD) ratings are both safety features found on work footwear, but they address completely different risks. EH shoes reduce the chance of electric shock when your foot contacts a live conductor. ESD shoes control the buildup and release of static electricity from your body. A shoe with one rating does not automatically have the other, so you need to match the rating to the hazard in your workplace.

Both ratings are tested under specific standards. EH footwear is typically tested to the ASTM F2412 and F2413 standards for protective footwear. ESD footwear is evaluated for its ability to limit static charge accumulation. Understanding what each test measures helps you read a shoe label correctly and pick the right pair for your job.

What the EH rating covers

The EH rating applies to footwear designed to reduce the flow of electric current through the body when you step on or near an energized conductor. The test for EH protection is conducted under dry conditions, and the shoe must limit current flow to a level considered safe for the wearer. The rating does not mean the shoe is conductive or that it will protect you in wet conditions.

EH-rated shoes are common in electrical trades, utility work, maintenance, and any job where accidental contact with live wiring or equipment is possible. The protection comes from insulating materials in the outsole and heel that resist electrical current. If your work involves energized circuits, an EH-rated shoe is the appropriate starting point, and you should confirm the rating is current and certified. For a broader look at protective footwear, see the work boot guide and the work shoe guide.

What the ESD rating covers

ESD footwear prevents the accumulation of static charge on your body. It is designed to dissipate static electricity in a controlled way, directing the charge from your body through the shoe and into a grounded floor. This matters in electronics manufacturing, cleanrooms, and facilities where static discharge could damage components or ignite flammable vapors or dust.

An ESD shoe is not the same as a conductive shoe. ESD footwear limits static buildup while still providing a level of resistance that protects the wearer from shock. The shoe works as part of a larger grounding system that includes ESD flooring, wrist straps, and clothing. If your workplace has a static-control program, the ESD shoe is only one element of it. Pairing the right shoe with proper floor grounding is essential, and you can learn more about the slip-resistance test standards if traction is also a concern.

Some shoes carry both EH and ESD ratings. These are useful when workers face electrical hazards and static-sensitive environments at different points in the same shift. A dual-rated shoe lets you cover both risks without changing footwear, which is often the most practical choice in mixed environments.

When you need each rating

Choosing the correct rating depends on the specific hazards present in your work area, not on the job title alone. A quick way to decide is to identify the primary risk you face each day and then verify the shoe label matches that risk.

You should look for an EH rating when you work near exposed wiring, electrical panels, or equipment that could become energized. This includes electricians, linemen, HVAC technicians, and general maintenance staff. The EH rating is not a substitute for proper lockout procedures or insulated tools, but it adds a layer of protection at the foot.

You should look for an ESD rating when you handle circuit boards, assemble electronic components, or work where static sparks could ignite dust, gas, or solvent vapors. In these environments, uncontrolled static discharge can ruin a product or create a fire risk. If you need protection from falling objects or punctures in addition to electrical or static hazards, consider a shoe that combines a safety toe with the appropriate rating. The safety toe standard guide explains how impact and compression protection are evaluated, and the safety toe shoe guide lists options across categories.

Care, wear, and rating validity

EH and ESD ratings are only valid when the shoe is in good condition. A worn-out sole, a deep cut, or damage to the upper can compromise the protective properties of the shoe. For EH-rated shoes, moisture is a serious concern because water can reduce the insulating effectiveness of the materials. If your EH shoes become soaked or heavily contaminated, the rating should not be considered reliable until they are dry and inspected.

For ESD shoes, the conductivity path depends on the outsole and insole materials. Heavy contamination, oil buildup, or a worn tread can interfere with the discharge path. Regular cleaning and inspection are part of maintaining the rating. If you resole or repair a protective shoe, the EH and ESD ratings are no longer guaranteed unless the manufacturer or a certified facility verifies them. The guide to care for ESD shoes covers cleaning and maintenance practices, and the article on EH rating after resoling explains why repairs affect certification.

When in doubt, ask your employer or safety officer to confirm which rating is required for your tasks. They can also tell you how often shoes should be inspected and replaced based on your facility's safety program.

Protective footwear fits into a broader safety system

Ratings like EH and ESD are part of a larger approach to workplace safety. The National Institute for Occupational Safety and Health (NIOSH) studies worker safety and health and provides resources that help employers reduce hazards. Selecting the correct footwear is one step, but it works best alongside engineering controls, training, and proper work procedures.

Foot comfort and fit also matter. A protective shoe that fits poorly can cause blisters, fatigue, or long-term foot problems, which is why health organizations emphasize the importance of well-fitting footwear. The work boot size guide helps you measure correctly, and the wide shoe fit guide addresses width considerations that are common in safety footwear. If you spend long hours standing on hard floors, you may also want to review the standing shoes support guide for cushioning and arch support advice.

The best protective shoe is one that you will actually wear consistently. Look for a model with the required rating, a comfortable fit, and the durability needed for your environment. The steel toe shoe guide and the work boot guide offer comparisons of rated options across styles and features.

What to pick for your use

Questions

Are EH and ESD the same thing?

No. EH (electrical hazard) protection reduces the risk of electric shock from live conductors. ESD (electrostatic discharge) protection prevents static charge buildup on your body. They address different hazards and are tested differently.

Can one pair of shoes have both EH and ESD ratings?

Yes. Some shoes are tested and certified for both ratings. These dual-rated shoes are useful when workers face electrical hazards and static-sensitive situations in the same workday.

Does moisture affect the EH rating?

Yes. The EH test is performed under dry conditions. Water can reduce the insulating effectiveness of the shoe materials, so the protective rating should not be relied on when the shoe is wet or heavily contaminated.

Does resoling or repairing a shoe void the EH or ESD rating?

It can. Any modification, repair, or resole may alter the materials that provide the protective property. The rating is only guaranteed when verified by the manufacturer or a certified service provider.

How do I know which rating I need?

Identify the primary hazard in your work area. If the risk is contact with energized equipment, choose EH. If the risk is static damage or ignition from sparks, choose ESD. Your employer or safety officer can confirm the requirement for your specific tasks.