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ANSI/IES RP-2-20
Recommended Practice: Lighting Retail Spaces
ANSI/IES RP-2-20 emphasizes lighting quality and energy efficiency and provides an in-depth discussion of the system and the criteria essential to lighting merchandise displays in a variety of retail applications. Specifically, lighting quality metrics appear in Tables 4-1 and 4-2 (Section 4.1). Horizontal and vertical illuminance, along with uniformity recommendations, can be found in Table 4-3 (Section 4.2).
Illuminating Engineering Society of North America [iesna]