IEEE C37.20.1a-2020 PDF
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IEEE Standard for Metal-Enclosed Low-Voltage (1000 V ac and below, 3200 V dc and below) Power Circuit Breaker Switchgear – Amendment 1: Control and Secondary Circuits and Devices, and All Wiring
IEEE , 05/13/2020
File Format: PDF
IEEE C37.20.1a-2020 PDF
Align the wiring requirements of this standard with; C37.20.2, C37.20.3, C37.20.9 and C37.21. This amendment will focus on sub clause 7.1.3.1, the wire used in switchgear.
Amendment Standard – Active. The 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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