Hello,
We have a project where some luminaires have more power than what it is required by the mandatory provisions of exterior lighting power.
However the actual power necessary to obtain the lumens needed for the project is below the power requirement. So we plan to lock the power of the luminaire during its installation so it will never exceed the mandatory requirement. We think of this approach because the exterior lighting designer cannot find a luminaire with the exact wattage needed.
1) Do you think this approach is acceptable?
2) How to show compliance during the design review as the technical documentation of the luminaires will show a non-compliant wattage? Does it seems acceptable if we include the requirements of blocking the power in the construction documents?
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5907 thumbs up
September 8, 2016 - 11:19 am
I am a bit confused by the question since compliance is determined based on the watts/area or linear feet and not by the individual fixture. So individual luminaires can't have more power than required.
1. Maybe. See the exception to 9.1.4.
2. Demonstrate compliance with the exception to 9.1.4.
Julien Richard
Artelia8 thumbs up
September 13, 2016 - 5:31 am
Thanks Marcus! The exception seems to apply.