How to Prevent Electrical Fires at Your Business: A Complete Guide to Risk Reduction and Workplace Safety

Electrical fires are one of the most common and devastating causes of property loss in commercial buildings. A single spark or overloaded outlet can result in business interruption, structural damage, and even injury or loss of life.

According to the U.S. Fire Administration, more than 100,000 nonresidential building fires occur each year, causing over $2.5 billion in property losses, with electrical malfunctions accounting for over $370 million. Alarmingly, 18% of all warehouse fires are caused by electrical issues.

At Risk Assured, we help organizations reduce risk through proactive safety practices. In this article, we outline the most common causes of electrical fires and share proven strategies to help you protect your business.

Photo by Lawrence Macaron on Unsplash

Common Causes of Electrical Fires in Commercial Buildings

Understanding where and how electrical fires start is key to preventing them. The most common causes include:

1. Faulty Wiring

Outdated, overcrowded, exposed, or improperly installed wiring can lead to overheating and sparks. Wiring that doesn’t match circuit amperage or meet NFPA (National Electric Code) standards increases fire risk.

2. Overloaded Outlets

Plugging too many devices into a single outlet can cause overheating, melting, and eventually fires. Use properly rated outlets for all equipment.

3. Improper Use of Extension Cords

Extension cords are among the most frequent fire hazards:

• Avoid running cords under carpets or through walls, windows, or doorways.

• Never use nails, staples, or tape to secure extension cords.

• Use only for short-term or seasonal purposes.

• Never connect space heaters or high-wattage appliances to extension cords.

4. Space Heaters

Portable heaters placed near flammable materials like curtains or clothing are a major fire risk, especially when used with extension cords.

5. Light Fixtures and High-Wattage Bulbs

Using bulbs that exceed a fixture’s wattage limit can result in overheating, arcing, and electrical fires.

6. Damaged Equipment and Poor Housekeeping

Dusty, greasy, or worn-out equipment can catch fire if exposed to sparks. Always inspect and clean bathroom exhaust fans, motors, and electronic devices regularly.

7. Static Electricity

While uncommon, static discharge can ignite flammable vapors or dust—especially in dry environments or industrial settings.

How to Safeguard Your Business Electrical System

Every business has unique electrical risks. Most commercial buildings contain thousands of feet of wiring, multiple circuit panels, and a variety of power-dependent equipment. Proper design, maintenance, and oversight are essential.

Electrical Room Best Practices:

• Keep the room clean, dry, and well-ventilated

• Ensure the space is sealed against dust and pests

• Install a BC or ABC-rated fire extinguisher

• Never store flammable materials near electrical panels

Watch for Red Flags and Early Warning Signs

Be alert to early indicators of electrical issues:

• Use of extension cords for permanent equipment

• Frayed, corroded, or exposed wiring

• Frequently tripped breakers or blown fuses

• Flickering lights or shocks when touching appliances

• Sparking outlets

• Hot spots in electrical panels caused by overloaded circuits, loose connections, or faulty breakers

Inspect and Maintain All Electrical Systems

Have your electrical systems inspected regularly by a licensed electrician. Key components to monitor include:

• Circuit breakers

• Fuses

• Transformers

• Wiring

• Switchboards and panels

• Disconnect switches

• Relays and contactors

• Motors and control systems

Infrared thermography is a powerful tool for detecting overheating or hot spots before they become a hazard. Larger businesses may even benefit from owning a thermal scanner for routine checks.

Follow OSHA-Approved Lockout/Tagout Procedures

When repairing or replacing electrical equipment, follow OSHA standard 29 CFR 1910.147 for lockout/tagout procedures. These protocols prevent accidental energization during maintenance and help avoid injuries.

Every employee should be trained on how to identify and follow proper lockout/tagout protocols when dealing with hazardous energy.

Train Your Employees to Prevent Electrical Fires

Your team is your first line of defense. Train all employees to:

• Recognize fire hazards in their workspace

• Understand safe electrical usage

• Know what to do if they encounter sparks, smoke, or overheating

• Use fire extinguishers and respond to alarms

• Follow building evacuation procedures through regular fire drills

No Plan Is Foolproof, But Diligence Saves Lives

You can’t completely fireproof your facility—but you can dramatically reduce the risk. Preventing electrical fires requires awareness, maintenance, and staff education. Commit to routine inspections, monitor high-risk areas, and maintain a workplace culture focused on safety.

At Risk Assured, we help businesses implement comprehensive fire prevention strategies that safeguard people, property, and operations.

Contact us today to schedule a fire safety audit or to create a custom risk management plan for your facility.