STEVETERRY
Well-Known Member
The 2020 NEC is now published. One of the most important changes of interest to the entertainment industry is new 520.68(A)(2) covering allowable cable types for portable equipment in theatres and similar locations:
520.68 Conductors for Portables.
520.68(A)(2) Protected Applications.
Listed, hard usage (junior hard service) cord or cable shall be permitted where all of the following conditions are met:
(1) The cord or cable is protected from physical damage by attachment over its entire length to a pipe, tower, truss, scaffold, or other substantial support structure, or installed in a location that inherently prevents physical damage to the cord.
(2) The cord or cable is connected to a branch circuit protected by an overcurrent protective device rated at not over 20 amperes.
(3)The cord or cable does not exceed 30 m (100 ft) in length.
ST
520.68 Conductors for Portables.
520.68(A)(2) Protected Applications.
Listed, hard usage (junior hard service) cord or cable shall be permitted where all of the following conditions are met:
(1) The cord or cable is protected from physical damage by attachment over its entire length to a pipe, tower, truss, scaffold, or other substantial support structure, or installed in a location that inherently prevents physical damage to the cord.
(2) The cord or cable is connected to a branch circuit protected by an overcurrent protective device rated at not over 20 amperes.
(3)The cord or cable does not exceed 30 m (100 ft) in length.
ST