National Electrical Code (NEC) Compliance: Wire Insulation Color

August 2, 2021 Ciara Gunnin

 

Acuity Brands is committed to meeting all national safety codes. We are actively working to achieve full compliance with a new section of the 2020 edition of the National Electrical Code (NEC) addressing the identification of control conductor insulation (Section 410.69). This new section prohibits the use of wire insulation colors reserved for the grounded branch circuit conductor (white or gray) or the equipment grounding conductor (green or green with a yellow stripe) for field installation. Currently, it is standard practice to use gray for the negative dimming lead in 0-10V applications. Due to the new section in the NEC, gray may no longer be used for this application. Consequently, NEMA has released a new standard (NEMA 100-2021) which specifies a visual reference for wire colors as well as a bulletin identifying that pink may be used to replace the gray color currently used in 0-10V dimming applications (Bulletin No. 119). Across Acuity, the work to achieve this color change is well underway. Our customers may already be seeing pink negative dimming leads on Acuity controls and sensors and can expect to begin seeing pink negative dimming leads in luminaires this summer. Our customers will also be seeing mention of pink negative dimming leads on instruction sheets and other product documentation already published on AcuityBrands.com. The effectivity date for this change is January 1, 2022.


For questions, please contact Rachael Brewer (rachael.brewer@acuitybrands.com)

 

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