Lux Requirements for Warehouse Operations
IS 3646 (Interior Lighting Standard) specifies: General warehouse storage areas: 150–200 lux. Pick and pack stations: 300–500 lux. Quality control and inspection areas: 500–750 lux. Forklift aisles: 200–300 lux. Loading bays: 200 lux. Cold storage areas: 150–200 lux. For FIFO and order picking with barcodes and small labels: minimum 300 lux is recommended to reduce errors.
Highbay Selection by Warehouse Ceiling Height
6–8m ceiling: 100W UFO LED highbay at 6m spacing - achieves 150–200 lux. 8–10m ceiling: 150W LED highbay at 6m spacing - achieves 180–220 lux. 10–12m ceiling: 200W LED highbay at 5m spacing - achieves 200 lux. 12–15m ceiling (large logistics warehouse): 250–300W at 5m spacing. Each highbay covers a grid area - calculate: number of lights = floor area ÷ (spacing²). For a 5,000 sq.m warehouse at 8m height with 100W highbays on 6m grid: 5,000 ÷ 36 = 139 lights.
Energy Savings from LED Highbay Upgrade
Typical Indian warehouse before LED upgrade: 250W metal halide highbays, running 16 hours/day (two shifts). After LED upgrade: 100W LED highbay. Energy saving per fixture: 150W saved × 16h × 300 working days = 720 units/year. At ₹7/unit commercial rate: ₹5,040 saved per fixture per year. For 100 fixtures in a medium warehouse: ₹5,04,000 annual saving. Initial investment (100 × ₹5,000 per 100W highbay): ₹5,00,000. Payback period: under 1 year - one of the fastest ROI improvements in industrial energy management.
Installation Tips for Warehouses
Use pendant mounting (chain or pipe) for adjustable height. Rack-top mounting between shelving bays for focused aisle lighting. Ensure lights are not directly above rack tops (creates shadows when retrieving stock from bottom levels). Use emergency backup driver for 1–2 hours backup per light in critical areas. Install occupancy sensors in low-traffic zones (reduce to 30% when no motion for 10 minutes) - can save additional 20–30% energy. For warehouses with frequent forklift operation, use IK10-rated highbay fixtures.
