Hi we are working on a LEED-CI for retail and they have exterior lighting power that doesn't comply with ASHRAE Section 9.4.5 which is compulsory and non-tradeable with interior lighting.
The lighting is decorative so does not meeet any of the exceptions for being an adverstiing sign.
The amount of lighting is small (less than 5% of total lighting) as the facade area is not large and we have them using LED and lighting controls including timers and dimmers but we still do not comply. Does anyone have experince of this or know if it can exterior lighting can be traded in any way.
The lighting is not that extensive and less than common practise so this must be a problem for Retail projects in the US meeting code.
Bill Swanson
Sr. Electrical EngineerIntegrated Design Solutions
LEEDuser Expert
734 thumbs up
August 24, 2011 - 3:21 pm
I might not have understood everything that you are asking. Let me know if I missed something.
You only have to comply with lights that are part of this project's scope of work.
You are correct, extra interior allowance cannot be used for lighting outside.
It sounds like the decorative facade lighting is all you have outside of the building.
How close are you? You get an extra 5% if you read 9.4.5. If the facade allowance total is 100W then with the 5% adder you get 105W. That's all there is. You either need to lower the wattage or increase the area that is considered illuminated by these lights. Sorry I can't help much.