NEC guidelines on when disconnecting means are required to remain lockable open
Where a disconnecting means is required to be lockable open as described in 110.25 of 2014 NEC, when is the provision for the locking means to remain in place not required?
B. When cord-and-plug connections are used
C. Only when installed as a motor disconnecting means
D. For air-conditioner disconnecting means
Per the Exception, when cord-and-plug connections are used as described in 110.25, the provision for the disconnecting means to be lockable open does not apply.
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