Q. Need advice about commercial fluorescent light fixtures - any reliable review site would be great! Thanks!
A. Look in your local yellow page listings for "electrical contractor supply" stores. The most common commercial quality brands are Metalux, Lightolier, Lumax and Hubbell. Many fancy lighting showrooms also have a contractor supply department from which you can purchase commercial lighting and also lighting specifiers and designers who can help you select and lay out what you need for the space.
I worked as a commercial lighting designer for one such store in my city for a couple of years.
Even the home building stores like Home Depot and Lowes can sell you commercial lighting, if that is the only resource in your area. But a contractor supplier will be less expensive and have more in stock.
Buying such items on the internet is not a great idea. Costs of shipping and problems with delivery damages are high with such products. Your simplest and most economical source is local electrical supply dealers.
I worked as a commercial lighting designer for one such store in my city for a couple of years.
Even the home building stores like Home Depot and Lowes can sell you commercial lighting, if that is the only resource in your area. But a contractor supplier will be less expensive and have more in stock.
Buying such items on the internet is not a great idea. Costs of shipping and problems with delivery damages are high with such products. Your simplest and most economical source is local electrical supply dealers.
Who are the best " green " commercial lighting contractors in the Midatlantic region? LEED accredited ?
Q. I am designing a LEED silver office building, and I have some questions regarding daylighting and other energy effecient lighting technologies, from a contractors practical point of view.
Thanks !
Thanks !
A. I don't have any suggestions for the best commercial lighting contractors. However, the U.S. Green Building Council's membership directory is a good place to start. You can access it online at no charge at http://www.usgbc.org/myUSGBC/Members/MembersDirectory.aspx?CategoryID=2&CMSPageID=140. You can retrieve results by category (Contractors and Builders) and State.
I hope this helps. Please let me know if you need more information.
Laura Barnes, MSLIS
Illinois Waste Management and Research Center Librarian
I hope this helps. Please let me know if you need more information.
Laura Barnes, MSLIS
Illinois Waste Management and Research Center Librarian
how does emergency lighting work?
Q. Like in a commercial building. Can you buy battery powered commercial lighting thats not connected to a 120volt plug? and what activates emergency lighting?
i figured, that the emergency lights would have to be connected to a 120 power supply from the building to be activated when power is cut. i just dont see how these emergency lights are triggered. unless they are connected to the buildings power?
i figured, that the emergency lights would have to be connected to a 120 power supply from the building to be activated when power is cut. i just dont see how these emergency lights are triggered. unless they are connected to the buildings power?
A. Emergency lighting is always connected to the AC power, both to keep the batteries charged and to detect when to turn on.
If it were not connected to the AC power, how would you charge the batteries?
To repeat, the system is triggered by the AC power going to 0, probably by something as simple as a relay across the AC power leads.
If it were not connected to the AC power, how would you charge the batteries?
To repeat, the system is triggered by the AC power going to 0, probably by something as simple as a relay across the AC power leads.
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