OF ac disconnect switch
OF ac disconnect switch
(OP)
pls tell me where do we use Air conditioner disconnect switch ? i havent seen such a thing by now.
When was the last time you drove down the highway without seeing a commercial truck hauling goods?
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RE: OF ac disconnect switch
Keith Cress
kcress - http://www.flaminsystems.com
RE: OF ac disconnect switch
RE: OF ac disconnect switch
A disconnect CAN also be fault protection if it is a circuit breaker or has fuses associated with it.
A disconnect must be able to cut the power OFF to the machinery, so no, there should be no arc flash issues associated with a closed enclosure disconnect switch. If the disconnect includes fuses they should be disconnected by operating the disconnect. This would allow one to replace the fuses. Of course if there is any question about power still being present after operation of a disconnect you should use a voltmeter to test for it.
Keith Cress
kcress - http://www.flaminsystems.com
RE: OF ac disconnect switch
The mechanism used in an approved disconnect switch is rated to interrupt fault current in the rare event that the switch may be opened during a fault.
The code mandates that a disconnect must be installed within sight and within a certain number of feet of the equipment protected. There are exceptions.
Bill
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