How do I accurately figure out the right wattage for my specific outdoor layout or project?
Figuring out the right wattage is all about matching the power of the light to the physical scale of the job, because buying too much wattage is an expensive mistake, while buying too little leaves dangerous dark spots. Contractors generally break wattages down into three distinct tiers based on the mounting height and the area they need to cover. The first tier is the 10W to 50W range. These are compact, lower-power fixtures perfect for close-up accent work. If you are lighting up a small backyard patio, throwing some light onto a residential garage driveway, or illuminating a small business sign from a few feet away, this tier gives you plenty of punch without blinding anyone or running up a massive electric bill.
The next step up is the 50W to 200W sweet spot, which is the true bread and butter of the commercial lighting world. You would specify these fixtures for mid-sized commercial properties where the lights are mounted anywhere from 12 to 20 feet up on a wall or pole. They are ideal for washing the sides of multi-story brick buildings, illuminating mid-sized retail parking lots, or keeping a school courtyard safe after dark. Finally, you have the heavy-duty tier, which starts at 200W and can easily go way past 400W or 1000W for specialized fixtures. This is serious industrial territory. You only want to pull out these big guns for massive footprints where the fixtures are mounted 30 feet or higher on poles or structural steel. We are talking about sprawling shipping container terminals, heavy industrial rail yards, high-ceiling manufacturing plants, and massive outdoor sports fields. At that height, you need that massive wattage to punch through the night air and deliver safe, usable light down to ground level.
