Lesson 4: OSHA Focus Four – Electrocution Hazards

Title: OSHA Focus Four – Electrocution Hazards
Type: Lesson

Why Electrocution Is Deadly

Electrocution is the fourth Focus Four hazard — and it’s one of the most sudden and severe risks on any construction site.

Electric shock can cause:

• Cardiac arrest

• Severe internal and external burns

• Muscle and nerve damage

• Fatal falls (if shocked while elevated)

Even low-voltage systems can kill — electricity doesn’t have to be “high voltage” to be deadly.

Common Electrocution Hazards on the Jobsite

• Contact with overhead or buried power lines

• Improper use of extension cords

• Damaged power tools or cords

• Lack of Ground-Fault Circuit Interrupters (GFCIs)

• Working on energized equipment without lockout/tagout

• Standing water near electrical tools

Never assume a wire is de-energized — always test before you touch.

OSHA Requirements (29 CFR 1926 Subpart K)

• All electrical work must follow OSHA and NFPA 70E standards

• Temporary wiring must be protected and GFCI-protected

• Tools must be grounded or double insulated

• Lockout/tagout procedures must be used when servicing equipment

Safe Work Practices

• Use insulated tools and check equipment before use
• Keep cords away from sharp edges, water, and traffic paths
• Use GFCIs on all portable electric tools
• Wear rubber gloves and boots when required
• Stay 10 feet away from overhead power lines
• De-energize circuits before working on them

Key Point

Electricity can’t be seen, smelled, or heard — but it can kill instantly. Protect yourself by following all electrical safety rules, even for “quick” tasks.

Next Step

Click “Mark Complete” to continue to Lesson 5: PPE – Personal Protective Equipment, where we’ll review essential gear that keeps you safe from every Focus Four hazard.