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Joined: Mar 2003
Posts: 2
D
douggr Offline OP
Junior Member
Quick question....

I was just reading NFPA 79 concerning supply circuit disconnects. What I would like to know is, is there a minimum voltage that an external disconnect (e.g operating handle connected to a molded case circuit breaker) is required? I have always seen them used on enclosures with 380/460/480 vac. But would an enclosure that has an incoming supply voltage of 110vac be required to use such a device? What about 220vac?


Doug Greig
douggr@hazelett.com
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Joined: Jul 2001
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J
JBD Offline
Member
The requirement for a disconnect is not dependant on the voltage nor the amperage level.


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