Historical
IEEE C37.20.2a-2020
IEEE Standard for Metal-Clad Switchgear--Amendment 1: Control and Secondary Circuits and Devices, and All Wiring
Amendment Standard - Active. This amendment addresses the requirements for control, secondary, and logic-level wiring. It covers wire type, ampacity, and methods for protecting wiring across a hinge.
Content Provider
Institute of Electrical and Electronics Engineers [ieee]
