Replaces the former Supplement SA with a new framework for component selection, now found in Appendix C .
The maximum DC voltage for "low-voltage limited energy circuits" was increased to 60 volts DC .
Specific requirements were added for three new industrial control panel types: aquatic playgrounds, commercial water park rides/wave pools, and large residential swimming pools.
New rules for the use of ferrules, updated marking for multiple disconnect switches, and revised ratings for the largest main overcurrent protective devices.
Covers enclosed-type panels (enclosure and internal components), open-type panels (mounting subpanel and components), and empty enclosures. Key Changes in the 3rd Edition
This edition applies specifically to control panels designed for and general industrial use. Key technical parameters include:
Replaces the former Supplement SA with a new framework for component selection, now found in Appendix C .
The maximum DC voltage for "low-voltage limited energy circuits" was increased to 60 volts DC .
Specific requirements were added for three new industrial control panel types: aquatic playgrounds, commercial water park rides/wave pools, and large residential swimming pools.
New rules for the use of ferrules, updated marking for multiple disconnect switches, and revised ratings for the largest main overcurrent protective devices.
Covers enclosed-type panels (enclosure and internal components), open-type panels (mounting subpanel and components), and empty enclosures. Key Changes in the 3rd Edition
This edition applies specifically to control panels designed for and general industrial use. Key technical parameters include: