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IEEE C37.21a-2020

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

Amendment by IEEE , 07/01/2020

This document is an amendment. View the base document.

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Scope

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.

Abstract

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.
 

Product Details

Published:
07/01/2020
ISBN(s):
9781504465724, 9781504465731
Number of Pages:
13
File Size:
1 file , 540 KB
Product Code(s):
STD24124, STDPD24124, STDPL24124
Note:
This product is unavailable in Russia, Ukraine, Belarus