IEEE C37.21a:2020

IEEE C37.21a:2020

IEEE Standard for Control Switchboards--Amendment 1: Control and Secondary Circuits and Devices, and All Wiring

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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.

Additional Info

Author Institute of Electrical and Electronics Engineers (IEEE)
Committee Switchgear
Published by IEEE
Document type Norms amendments
Edition
EAN ISBN 978-1-5044-6572-4
ICS 29.130.99 : Other switchgear and controlgear
Number of pages 16
Modify IEEE C37.21:2017
Keyword IEEE C37.21a-2020
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