Code Quiz

Jul 8, 2005 8:45 AM

Starting Jan. 1, 2008, a local disconnecting means (i.e., switch) is required for which of the following luminaires?

A) A fluorescent luminaire that uses double-ended lamps and is direct-wired using RELOC or equivalent manufactured flexible wiring system
B) Ballasted luminaires fed from multi-wire branch circuits, and fluorescent luminaires utilizing double-ended lamps, installed in the production areas of an industrial facility
C) An open bottom, high-bay luminaire with a metal halide lamp that’s cord-and-plug connected per 410.30(C)
D) A 2-in. X 4-in. fluorescent lay-in troffer, which is used as part of the emergency lighting system as emergency luminaire

Answer: A)

Explanation: Per a 2005 change, 410.73(G) was added to require disconnecting means for all direct-wired fluorescent luminaires that use double-ended lamps. Also, direct-wired ballasted luminaires fed from multi-wire branch circuits require a disconnecting means. There are five exceptions to this section which may omit the disconnecting means at each luminaire.

Owen is the owner and president of National Code Seminars and the holder of master electrician certifications in 46 states. He can be reached at necexpert@aol.com.