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Lighting Requirement Changes in 2021 IECC
Did you know, lighting accounts for roughly 40% of the energy used in commercial buildings? In our February COTE meeting, ALA and Horton Controls Group discussed the changes in the code and how they relate to lighting controls. The 2021 IECC (International Energy Conservation Code) updated the lighting section (C405) with the goal of reducing energy consumption. The City of Dallas anticipates adopting the 2021 IECC by the third quarter of 2022.
If we take a step back and look at the 2018 code, a change was made requiring occupancy sensors in open offices spaces. The 2021 version has taken this one step further and added a requirement to include occupancy sensors with dimming controls in corridors. In designated areas, automatic receptacle controls are also necessary. Likewise, parking garages are required to have additional lighting controls to reduce the luminaire by 30 percent when the space has not been occupied in 20 minutes. The effects of daylighting in the garage space is also addressed and automatic reduction of controlled lighting, during the daylight hours, is further prescribed.
So, after a long day at work, turning off the lights is the last thing you’ll have to worry about.
By: Meredith England and Graciela Kessler
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