Energy Efficient Lighting Design
The 2015 International Energy Conservation Code (IECC) has seen a reduction in interior lighting power allowances for all occupancies as listed in Table C405.5.2(1). The reduction of these allowances (measured as watts per square foot) has necessitated the specification of more energy efficient luminaires, and LED lamps in projects. Older lamp types, such as fluorescent and incandescent, are unable to meet the stricter guidelines set out in the 2015 IECC.
This is because the approach to coordinating a proper lighting layout is twofold: achieving the necessary light levels for any given space (measured as foot-candles) and also complying with the energy allowances set forth in the 2015 IECC. It is a relationship of input versus output. In this way, LED lamps have a better performance ratio when compared to fluorescent and incandescent. The input wattage required to power the lamp is much lower, but it will achieve a similar lumen output to its counterpart.
Understanding LED lamps, and their functionality, is of growing importance in today’s industry. This link to the Energy Star website is a great place to get started: