Grounding and bonding are distinct concepts with different purposes -- and confusing them causes real hazards. This article covers the NEC Article 250 framework, theater-specific Article 520 requirements, EGC impedance and fault current calculations, generator separately derived systems, GFCI protection requirements, outdoor wet-location grounding, and field verification methods including low-resistance ohmmeters, meogohmmeters, and ground loop impedance testers.
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Electrical knowledge is inseparable from electrical safety in theater. Learn the NEC Article 520 requirements, NFPA 70E electrical safety standards, grounding fundamentals, and lockout/tagout procedures.
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Electrical knowledge is inseparable from electrical safety in theater. Learn the NEC Article 520 requirements, NFPA 70E electrical safety standards, grounding fundamentals, and lockout/tagout procedures.
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Theatrical electrical systems are governed by NFPA 70 (NEC) Article 520, OSHA 29 CFR 1910 Subpart S, and multiple additional NFPA standards. This article explains the electrical code framework, theater-specific NEC requirements, UL listing, the role of the Authority Having Jurisdiction, and when licensed electrician work is required.
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