National Electrical Code Articles and Information

National Electrical Code Top Ten Tips: Article 530, Motion Picture and Television Studios and Similar Locations

1. Note that the electrical inspector isn't the only Authority Having Jurisdiction (AHJ) for a motion picture studio installation. Others who can enforce the codes are the general contractor, OSHA, insurance providers, and the property owner. The producers and investors, having significant sums at stake, also need to be assured that their investment won't burn down.
   
   
2. The intention is that Article 530 applies to business ventures in film (a generic term that now includes electronics for video capture) [530.1]. It does not apply to an amateur making a film of the local high school play. As recently as the 2020 revision, any activity involving the use or editing of film or tape more than 22mm wide falls under Article 530 [530.1]. My write-up then said this parameter is bound to change as the equipment continues to evolve and more digital-only recording equipment is used. With the 2023 revision, that prediction came true. Also, the sets are the issue--not the camera. The film width was just a convenient demarcation metric when this rule was written. If there is some doubt, contact the AHJ for a ruling. Understand that legal implications do exist.
    
3. Egress lighting circuits shall not be protected by GFCI [530.11].
    
4. Live parts must be enclosed, guarded, or located so people don't accidentally come into contact with them [530.12(A)].
   
5. All switches shall be of the externally operable type [530.12(B)].
    
6. Portable wiring shall be listed hard usage cords and cables [530.22(A)] unless part of a listed assembly [530.22(C)].
    
7. The electrical equipment used in non-production areas must be restricted from access to the general public [530.41].
    
8. All 125V, single-phase, 15A and 20A receptacles must be GFCI-protected [530.44(A)]
    
9. If it's exposed, non current-carrying metal that is likely to become energized, bond it [530.44(E)]
    
10. Fixed wiring for dressing rooms must be installed with Chapter 3 wiring methods [530.61].