The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Correct rotation, wrong sequence
by Potseal
Yesterday at 03:14 PM
Industrail Control Panel bonding per 409.108
by sparkyinak
12/09/16 06:29 PM
Calling all Non-US members!! (Non-US only)
by aussie240
12/07/16 02:39 AM
Photo Upload Tutorial
by DanK
12/06/16 11:35 PM
Sprinklered equipment 26-008
by bigpapa
12/02/16 04:24 PM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 11
HotLine1 10
Potseal 9
sparkyinak 8
Texas_Ranger 7
Who's Online
0 registered (), 224 Guests and 5 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#43620 - 10/16/04 09:12 PM Indoor Sign Lighting
BigB Offline
Member

Registered: 03/31/04
Posts: 727
Loc: Tucson, AZ USA
Hi All, This is directed to those who have a lot of experience in indoor commercial lighting. I have an office that has requested track lighting for two logo signs on the interior walls. The signs are raised cutout letters eight feet long and 18 inches high. They are on walls of rooms which are illuminated with fluorescent troffers. They want to highlight the logos. My lighting vendor is recommending low voltage fixtures, 4 foot tracks with 4 heads, 20 watts each (80 watts per sign). He said with the proper placement the 20 watt lamps will do fine, but I am a bit skeptical since the fluorescents already light the area pretty well, I am afraid the 20 watt lamps will not be enough. It's not as though I could just get 2 sets of lamps, the fixtures will be fed from the 277V troffers using 2 stepdown transformers, the cost being substantially more for the bigger x-formers if I go with 50 watt lamps. If anyone has more knowledge than myself about commercial lighting please reply. Thanks, Brian

Top
Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#43621 - 10/16/04 09:29 PM Re: Indoor Sign Lighting
Trumpy Offline

Member

Registered: 07/05/02
Posts: 8540
Loc: SI,New Zealand
Brian,
I'd go with the 50 watt lamps.
Halogen Dichroics are just the sort of light you need to highlight a sign inside a commercial building.
_________________________
Let's face it, these days if you're not young, you're old - Red Green grin

Top
#43622 - 10/16/04 09:50 PM Re: Indoor Sign Lighting
twh Offline
Member

Registered: 03/11/04
Posts: 898
Loc: Regina, Sask.
80 watts total seems a little dim to me, too. 200 watts might be a little much. I would use a dimmer.

I do agree with the 4 foot track. Track lights are ugly and detract from the over-all appearance. Shorter is better.

Aim the first and third lights (from the left) left, and the second and fourth, right. It should even out the spread and create interesting shadows.

In my opinion, keep the lighting angle about 45 degrees. Long shadows look silly and lack of a shadow defeats the purpose of the raised lettering.

The other possibility, with shadows, is to make them a strong part of the display. I can't visualize that with track lighting.

I agree with Trumpy on hologen lights. They are a different color and stand out from general office lighting.

Top
#43623 - 10/19/04 07:51 PM Re: Indoor Sign Lighting
BigB Offline
Member

Registered: 03/31/04
Posts: 727
Loc: Tucson, AZ USA
Thanks guys. I decided to go with the 300Watt xformers. A dimmer won't be feasable. If the 50W lamps are too much I'll put 35W lamps in.

Top
#43624 - 10/20/04 06:02 AM Re: Indoor Sign Lighting
electure Offline

Member

Registered: 12/24/00
Posts: 4226
Loc: Fullerton, CA USA
I think you've made the right decision.

I do quite a bit of this type of thing, and the 50w MR16 is the one I've chosen most.


 Quote:
with the proper placement


...therein lies the key. Close enough but not too close. Far enough yet not too far.

Top



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals