How to calculate the lighting load & power load requirement
by knowing area of building/room. Is there any thumb rule?

Answer Posted / rm

You can calculate based on lighting load density factor.. which depends on the type of occupancy.... let's say 15w/m2 500m2 Then calculate 500x15 = 7500w.each lighting point will b assumed to have 100w/unit. So 7500/100= 75 lighting points

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