IEEE PC37.21a/D7, October 2019

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


 

 

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标准号
IEEE PC37.21a/D7, October 2019
发布
2020年
发布单位
美国电气电子工程师学会
 
 
适用范围
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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