lighting

There are 4 lights total, and when I turn on the switch, none of the lights come on. I have checked with a multimeter to confirm that there is 120VAC between the line and ground at the switch. I have also used a voltage checker to confirm that all four lighting fixtures have voltage when the...

Hey everyone, I bought this 3 light smart switch and having some trouble installing it. I unscrewed one of the existing 3 light switches and it has a total of 7 cables, 2 per light + neutral (see below) Also to note, 2 black cables are tied together by the blue tape and attached to the 3...

Problem: I have a Cree fixture that I am constantly replacing in stores and the driver is built into the fixture and has no specs to it. Light engines always test okay, but the drivers fail and I then have to replace the fixture which is expensive in comparison to all the fixtures I can replace...

Hello everyone! I work at a lighting distributor company. Have been in electrical field for about 10 years now and hold a PE license in MA. Worked in commercial, healthcare, residential, and educational fields. I’ve been reading this forum from time to time and learned a lot so recently...

I know of RAB's lightcloud system, but are there other lighting control systems you have heard of that are good contenders or alternatives to this? I know companies like Lutron have their own version and LG Lighting has something with ZigBee wireless capability. Looking for feedback on...

I just wanted to formally introduce myself, my name is Buddy, I work for Innovative Lighting as a lighting consultant for Iowa's only LED lighting manufacturer. I did not join this forum to advertise Innovative Lighting products, I joined to help people with any lighting questions/concerns that...

hallway is 100Ft 20 lights 5 Occupancy sensors Is there a way I can connect all 20 lights to all come on from all 5 occupancy sensor located at different locations? or do i have to split up 4 lights per sensor?

Hello I am the head electrician of a private school and we are building a new building. The contracted electrician has put in a change order to use a Acuity nLight lighting control over a Watt Stopper brand. I have never used the nLight system and am curious if anyone has. Pros / Cons and...

I'm looking to design and make my own touch lamp. I can only find circuitry that allows me to touch on and touch off. I want the lamp to only be on when I'm holding it. As though my hand completes the circuit, and without my hand, it's off. Anyone have any ideas on this, please? Thanks for...

I've done a lot of commercial electrical work, but never in a supermarket. Could someone tell me if the typical supermarket lighting voltage is 120V or 277V? Thanks.

I don't know how often do yall do industrial lighting project. When you go out there looking for LED High Bay light for a project , What is a price range that you could accept? And what brands you'd like to choose? Beers on me. Thank you.

We are in LED lighting business. Especially High-bay lights. We have years of experience working in Europe Market. Now we are getting our certification and trying to open an office in Houston Texas. Any thoughts?

I'm an audio/video guy with a lot of wiring experience, including basic electrical, but I have no clue if I'm using the right terms in the Title. Here's the situation. I want to add a motion sensor light switch to both sides of my garage door. (It's pretty wide and two lights are helpful.)...

I am currently working through Tom Henry's "Calculations..." book for the 2014 NEC. At least a couple of place it uses a factor of 4.5 va / sq. ft. for lighting and receptacle circuits (non-continuous). I cannot find this in the code. Does anyone know where is this "4.5 va" term is in the NEC...

We have several branch banks that have been installed with no problems (same lighting installation) but with no problems. We have ONE site that has a 20A breaker (can you believe it's circuit breaker #13) tripping almost exactly about every three weeks that powers a track lighting branch...

Hi everyone! I have an interesting question that I, the electrically challenged, would like some resources and information regarding. I am an assistant and the man I am doing some work for is building custom ceiling lamps that he would like to debut and potentially sell in the UK. He is from...

Looking for someone who can pull permits for us mainly on the east coast as we need them. We can pay a flat fee for you to just pull the permits and do a walk through or you can work with us on the job. Private Message me if interested. We are based out of Atlanta but travel wherever our clients...

Happy Thanksgiving, I'd like to have a string of 25-40 watt bulbs wired similar to a string of Christmas lights, with, a dimmer that would create a least to brightest sequence along the string. How do I do this? :santa:

All, I'm new to this forum so let me apologize in advance if I put this in the wrong section. I wanted to get an idea for the national account pricing for linear fluorescent lights from companies such as GE, Philips, Osram, etc. I'm trying to figure out whether or not this is worth pursuing...

Hi! I was wondering what type of fixture this is, and how the light is controlled? https://www.dropbox.com/s/r6xxcc98yotuqw6/IMG_5648.JPG I know it's a linear pendant fixture with T8 fluorescent lamps. At first I thought it had cross baffles, but seems like it is actually exposed. What do...