Safety
Three-phase power
An alternating-current system using three phase-shifted waveforms for efficient power distribution.
Hazards
- An alternating-current system using three phase-shifted waveforms for efficient power distribution.
Controls
- Only qualified workers configure phases, neutral, rotation, grounding, and protection.
Personal protective equipment
- Select task-specific PPE only after hazards and higher-order controls have been evaluated.
Regional considerations
- Applicable law, permits, collective agreements, venue rules, and qualified-person decisions take precedence.
In practice
Only qualified workers configure phases, neutral, rotation, grounding, and protection.
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Sources
- Recommended Practices for Safety and Health Programs — Occupational Safety and Health Administration
- Electrical Safety Specification for Motion Picture Production — Entertainment Electrical Safety Association