mounting switches and receptacles

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boatfull

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I know at one time I seen a code article regarding mounting switches and outlets, in boxes weather it be metal or plastic, having to use machine screws. Does that article exist?
Thanks
 
boatfull said:
Guess I must have imagined it. Thanks all for the reply
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Are you thinking of 250.8(A)(5) & (6) for grounding?


250.8 Connection of Grounding and Bonding Equipment.
(A) Permitted Methods. Equipment grounding conductors, grounding electrode conductors, and bonding jumpers shall be connected by one of the following means:
(1) Listed pressure connectors
(2) Terminal bars
(3) Pressure connectors listed as grounding and bonding
equipment
(4) Exothermic welding process
(5) Machine screw-type fasteners that engage not less than
two threads or are secured with a nut
(6) Thread-forming machine screws that engage not less
than two threads in the enclosure
(7) Connections that are part of a listed assembly
(8) Other listed means
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