Best Practice Guide for Warehouses 2008 - (Page 5) WAREHOUSE BUILDINGS Influential Factors for Lighting Control Energy Code Requirements Mandatory energy codes now require the use of lighting controls in nonresidential buildings and include specific control requirements for interior and exterior lighting. Since 2002, when the Department of Energy (DOE) selected ANSI/ASHRAE/IESNA Standard 90.1-1999 as the commercial building reference standard for state building energy codes, many states have adopted ASHRAE-based codes. Other jurisdictions have adopted the IECC code, which includes an ASHRAE-based compliance alternative. Both ASHRAE and IECC require that all lighting in all spaces be automatically turned off in buildings greater than 5,000 square feet. This means that occupancy sensing, time scheduling or signaling from building automation systems must be used to automatically turn lights off. In addition, both codes have requirements for lighting control in individual spaces, location of space controls and control of exterior lighting. [Insert most recent commercial code map from bcap here] Commercial state energy codes (visit www.bcap-energy.org for up to date code status) Still other jurisdictions and states, such as California, have developed their own codes. California’s 2005 Building Energy Standard not only requires automatic shut-off of lighting systems; it also requires multi-level control and separate control of daylit areas. Furthermore, the revised standards also list specific requirements for low-rise conditioned or unconditioned spaces, exceeding 25,000 square feet, with ceiling heights greater then 15 feet. This would apply to many warehouses and includes performance criteria for skylights, minimum skylight area to daylit zone area ratios linked to lighting power densities, percentages of floor area to be in a daylit zone, and electric lighting controls for lighting in the daylit area. For a summary overview of the lighting control requirements of the major energy codes (i.e., ASHRAE 90.1, IECC, and California Title 24), turn to pages 94-95 of this guide. www.wattstopper.com • 800.879.8585 5 http://www.bcap-energy.org http://www.wattstopper.com http://www.wattstopper.com
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