Module 8 · 45 minutes
Electrical safety
Reinforce de-energization, verification, hazard awareness, and disciplined work practices.
Learning objectives
By the end, you should be able to:
- Distinguish shock and arc-flash hazards
- Describe a disciplined de-energization and verification process
- Recognize alternate sources, backfeeds, and stored energy
Training note: This course reinforces safety concepts but does not replace employer training, NFPA 70E requirements, lockout/tagout procedures, qualified-person training, supervision, or site-specific rules.
Core topics
- Shock versus electrocution
- Current through the human body
- Arc-flash versus shock hazards
- De-energization
- Lockout/tagout
- Test before touch
- Meter category and ratings
Habits to build
- Use live-dead-live meter verification.
- Use appropriate PPE and rated equipment.
- Never assume a neutral is harmless.
- Account for stored energy.
- Identify possible backfeeds.
- Understand generators and alternate sources.
- Identify multiwire branch-circuit hazards before opening conductors.
Safety reflection
Write a step-by-step verification process for a circuit you commonly work on. Compare it with employer procedures and the instructions for your test instrument.