IEEE C37.21a-2020

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

IEEE , 07/01/2020

Publisher: IEEE

File Format: PDF

$29.00$59.00

Description

Standard By:IEEE , 07/01/2020

Published:07/01/2020

Pages:13

ISBN(s):9781504465724, 9781504465731

File Size:1 file , 540 KB

Language:English

Note:This product is unavailable in Russia, Ukraine, Belarus

IEEE C37.21a-2020 PDF

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. 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.

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