How many watts should flood light be to play basketball at night?

Boys want to play ball at night. Hoop will be about 50 feet away from the light. How many watts should my bulb be? 500 w?

Update:

To answer a response:This is just a driveway hoop. Nothing fancy. Just want them to be able to see the hoop. The whole court doesn't need lit up necessarily.

Update 2:

Court is concrete: Light will be shown toward the hoop (to the backs of the kids as they play).The court surface is only about 40 ft x 50 ft.

4 Answers

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  • 9 years ago
    Favorite Answer

    As the answer before me states, you have not given enough information.

    What is the surface, asphalt, concrete, grass, wood, sand?

    what is the court size?

    What type of lighting will you be using? Metal Halide, Incondensant, Mercury Vapor, High Pressure Sodium, Low Pressure Sodium, Florescent, or Light Emitting Diodes ?

    What voltages are available, a full sized court will require a lot of lighting. What you should be asking is how much light (in foot candles) do I need? The answer will dictate the best lighting source and the costs will effect your choice as well. A well lighted court to play in may be a much lower foot candle level that the court that others will be watching a game. Budget for both the installation of the lighting and the energy cost to operate are huge considerations. by far the lowest cost of installation is to us incandesent lighting but the operational costs will quickly eat up the origional cost of installation and maintenance. You may find used HPS or LPS fixtures (that may require higher than 120volt AC Power but will cost far less to operate. (HPS has a orange colored light and LPS the light is almost red but the cost of operation is about 1/8 of the cost for common incandensant. By far the lowest cost of operation is for the very new LED fixtures which also have very low maintenance costs but the up front costs are by far the highest.

    Distance from the fixture is very important, light drops off inversely proportional to the square of the distance from the source.

    This all is not intended to confuse you but you really must realize that the answer is not as simple as your question. If you can give any more information possibly I can give you some specific recommendations.

  • 9 years ago

    Egads !! they are not going to be reading out there. 2 @ 150 watt bulbs would be fine. How do I know? I have a motion detector with 2 @ 150 watt bulbs in it, and when it lights-up, You can see great at 50 feet away.

  • John P
    Lv 6
    9 years ago

    It is not how many watts should your bulb be, but how many 500 watt bulbs will you need and where to place them. also the size of the reflectors and the size of the court. Is this a standard size court or just something in the driveway, you didn't mention.

  • ?
    Lv 6
    9 years ago

    500w is plenty be sure to front light the hoop or they will need sun glasses.

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