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IEEE C37.21a-2020

IEEE Standard for Control Switchboards
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IEEE C37.21a-2020

IEEE Standard for Control Switchboards

PUBLISH DATE 2020
PAGES 16
IEEE C37.21a-2020

Amendment Standard - Active.

Requirements for control, secondary, and logic-level wiring are addressed in this amendment.

It covers wire type, ampacity, and methods for protecting wiring across a hinge.

Align the wiring requirements of this standard with IEEE C37.20.1, IEEE C37.20.2, IEEE C37.20.3, and IEEE C37.20.9.

This amendment will focus on sub clause 7.1.5, the wire used in switchboards.

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number C37.21
Publication Date July 1, 2020
Language en - English
Page Count 16
Revision Level a
Supercedes
Committee Switchgear
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