IEEE C37.21a-2020
IEEE Standard for Control Switchboards--Amendment 1: Control and Secondary Circuits and Devices, and All Wiring
| Aviso: | Las normas que son modificaciones no son documentos independientes y deben adquirirse con la norma a la que modifica. |
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| Fecha edición: |
2020-07-01
En Vigor
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| Idiomas disponibles: | Inglés |
| Keywords: | benchboard|console|control desk|control switchboard|dead-front switchboard|dual benchboard|duplex benchboard|enclosed switchboard|fixed rack cabinet|IEEE C37.21|IEEE C37.21a|swing rack cabinet|vertical switchboard |
| Scope: | Amendment Standard - Active. 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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| CTN: | |
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Modificaciones Normas |
Modifica a IEEE C37.21-2017 |










