PC37.20.1a - IEEE Draft Standard for Metal-Enclosed Low-Voltage (1000Vac and below, 3200Vdc and below) Power Circuit Breaker Switchgear Amendment 1: Control and Secondary Circuits and Devices, and All Wiring
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This amendment addresses the requirements for control, secondary, and logic-level wiring. It covers wire type, ampacity, and methods for protecting wiring across a hinge.
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Historical Base Standard
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