eric9822
Senior Member
- Location
- Camarillo, CA
- Occupation
- Electrical and Instrumentation Tech
I have a very large room that is currently illuminated by a lot of Metal Halide high bay fixtures. The fixtures are mounted above a corrugated sheet metal false ceiling about 40 feet up and shine through glass covered openings into the room below. The fixtures are hung with 3/4" rigid galvanized steel conduit with a hook at the end that hangs from a hangar on the actual ceiling truss. The wiring to the fixtures is THWN and it transitions out of the conduit for hanging via a tee condulet where it ties into the branch circuit wiring. As a test my company purchased a few LED high bays to see how they worked (please lets not turn this into a debate on the merits or demerits of LED high bays). The fixtures came with a 3/4" female thread and a set screw at the top for hanging like our existing fixtures. They also came with a factory installed 8 foot SOOW pigtail exiting the 3/4" threaded connection. The instructions say to route the pigtail through the conduit used for hanging the fixtures. This seems to me to be a direct violation of 400.8(6). Is there an exception if the listed luminaires instructions instruct you to install it in that manner? Since we believe the installation method specified is a violation a proposal has been made to attach a tee directly to the fixture with a short nipple and attach the conduit for hanging at that point. The pigtail would then be run out of the tee and routed to a receptacle. I am pretty sure this still violates 400.8(6) and also violates 400.8(5) but I thought I would ask. Opinions? Has anyone else run into something similar? Thanks.