Securing Pendant Luminaires in Class II Locations

Pendant luminaires installed in Class II, Division 1 locations shall be suspended by threaded conduit stems, by chains with approved fittings, or by other approved means. Stems shall be provided with _____ or other effective means to prevent loosening.

a) set screws
b) welded joints
c) expansion joints
d) explosionproof flex

See answer and applicable Code reference

The correct answer is: a) set screws

Article 502 of the 2011 NEC cover

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