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IEEE C37.20.2a-2020

IEEE C37.20.2a-2020 IEEE Standard for Metal-Clad Switchgear--Amendment 1: Control and Secondary Circuits and Devices, and All Wiring

Amendment by IEEE, 05/26/2020

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Full Description

Scope

Align the wiring requirements of this standard with; C37.20.1, C37.20.3, C37.20.9 and C37.21. This amendment will focus on sub clause 7.3.3, the wire used in switchgear. In this standard, metal-clad switchgear will be called MC switchgear.

Purpose

This standard provides information essential to designing and testing of metal-clad switchgear. Included herein are preferred ratings, required design test procedures, and acceptance criteria. A detailed description of construction requirements; including required functional performance features, structural materials, insulation, and interlocking is provided. Additionally, information on equipment application with respect to operating conditions, dielectric capabilities, and detailed application information regarding continuous current capabilities under differing ambient temperature conditions and application involving short-term overloading is included.

Abstract

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.

 
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