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IEEE C37.21

Control Switchboards Amendment 1: Control and Secondary Circuits and Devices, and All Wiring

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Organization: IEEE
Publication Date: 5 March 2020
Status: active
Page Count: 16
scope:

Abstract:

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.

Document History

IEEE C37.21
March 5, 2020
Control Switchboards Amendment 1: Control and Secondary Circuits and Devices, and All Wiring
Abstract: 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.
March 23, 2017
Control Switchboards
This standard covers ratings, construction, and testing of dead-front control switchboards containing, but not limited to, devices such as switches, control devices, instrumentation, metering,...
September 9, 2005
Control Switchboards
This standard covers ratings, construction, and testing of dead-front control switchboards containing, but not limited to, devices such as switches, control devices, instrumentation, metering,...
June 9, 2005
Standard for Control Switchboards
Overview This standard covers ratings, construction, and testing of dead-front control switchboards containing, but not limited to, devices such as switches, control devices, instrumentation,...
January 1, 1985
Standard for Control Switchboards
A description is not available for this item.
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