If you know the height of the street lamp, the width of the road, and the distance between the street lights, how can you determine the wattage of the HPS?
According to road grade. Available coefficient methodIllumination luminous flux maintenance factor 0.7* = * utilization coefficient (0.4 preferred) / width / spacing
Usually, which level of road illumination is required, and the relevant regulations can be read.
6 meters of street lamps generally use 150W high-pressure sodium lamp, 8 meters, 9 meters, with 250W sodium, 10 meters, -12 meters with 400W, this is more general statement, but easy to use,
