was on a job site today and I noticed in stock room that the 1x4 fluorescent fixtures were hanging by jack chain and the rows were joined by emt from...
I've been a part of this forum for a while, I have my selfish reasons, mostly I want to avoid all the hassle of LinkedIn. Can I ask which brand of...
I am bidding a job to replace existing church lighting. Ceilings are about 20 feet, all wood with big wood beams. Existing lights are 20 - cylinder...
I'm on a job were the existing 277v lighting system controls mostly 2x4 fixtures t8 bulbs,the 3 ckts all share the same nuetral .I thought that when...
We manufacture outdoor light controls. We use the industry standard ANSI C136.10 twist-lock interface. Our product is listed 120-277VAC 1800VA. We...
I want to drive/power 36 3w leds. Any ideas?
I am installing these fixtures in a warehouse addition, with the factory installed disconnect inside the fixture are you still installing receptacles...
If neutral conductor is shared in a three wire branch lighting cir are Handle ties on the breakers required? What code section
Is it acceptable to wrap aircraft style cable around the opposing right angle pieces on the bottom of a red iron truss for a hanging high bay fixture...
I am on a commercial project the plans call for me to hang conduit from a celing jbox to a jbox which is to be used to support a pendant light. I...
can any one clarify if a public corridor or staircase needs a arcfaults breaker on lighting
Is it legal to have an automatic control means such as a motion sensor or passive infra red sensor for electrical equipment general lighting?
I have been doing forum search for rope lights, "rope lights", and rope + lights. I get every result containing the word "light," which is not much...
Hello, I see motion sensors rated for 120/277 but none rated 208 or 240. Does 120/277 mean multivolt/every voltage in between 120 and 277? ...
I have a spec that calls for multiple installations of 3 way switches to conform with the 2011 NEC. First, Virginia has not as yet adopted 2011. ...
Hello everyone, I have a question. Is it safe to replace mercury vapour ballast with metal halide ballast? My office is still using MV lamp for...
Can you wire light fixtures containing emergency ballast through a lighting contactor? The control circuit for the contactor may trip and the lights...
Hi, I apologize if my asking this question is deemed inappropriate, I searched hard in vain to find relevant posts. At issue is the emergency...
I’m installing a custom made chandelier 35' in the air, and need a motorized lift for it. The problem is that its 1000-1200lbs. The biggest fixture...
I would like to know the code requirements for installing High Bay Flourescent lighting. Can you run cord? How far? Does it have to have a plug or...
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