NEMA - National Electrical Manufacturers Association
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NEMA C136.19-2017
Scope
This standard covers the selection of high-pressure sodium lamps recommended for use in roadway and area lighting equipment.
NEMA C136.19-2017 history
2017NEMA C136.19-2017 Roadway and Area Lighting Equipment - High-Pressure Sodium (HPS) and Retrofit HPS Lamps for Mercury Ballasts - Guide for Selection
2011NEMA C136.19-2011 For Roadway and Area Lighting Equipment - High-Pressure Sodium and Retrofit High-Pressure Sodium Lamps for Mercury Ballasts - Guide for Selection
2004NEMA C136.19-2004 For Roadway and Area Lighting Equipment ?High-pressure Sodium and Retrofit High-pressure Sodium Lamps for Mercury Ballasts - Guide for Selection