Safety and power · safety

Mother grid

A primary overhead support grid carrying secondary trusses, points, or production systems.

Safety notes

Engineering coordinates total loads, bracing, access, hoists, rescue, and inspection.
Applicable law, permits, collective agreements, venue rules, and qualified-person decisions take precedence.

In practice

Engineering coordinates total loads, bracing, access, hoists, rescue, and inspection.

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Sources

Published Technical Standards · Entertainment Services and Technology Association
Recommended Practices for Safety and Health Programs · Occupational Safety and Health Administration

Educational reference only. Requirements vary by jurisdiction, employer, venue, and production context.