IEEE C37.21
Standard for Control Switchboards
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| Organization: | IEEE |
| Publication Date: | 1 January 1985 |
| Status: | inactive |
| Page Count: | 24 |
Document History
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,...
IEEE C37.21
January 1, 1985
Standard for Control Switchboards
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