How Does a Pool Light Work?
Swimming at night is safer and more fun with a pool light. At night, underwater lights can help swimmers see their surroundings, as well as aiding any lifeguards in patrolling the water. Underwater pool lights are typically made with the use of halogen bulbs, though these days the use of LEDs is increasing. The water around the light fixtures acts as a cooling agent to help to dissipate the heat generated from them.
How Do Pool Lights Keep Dry
Pool lights are tightly sealed and designed to keep dry. The glass is very thick for extra protection, held in the pool by a strong clip or screw.
If a bulb needs to be changed, it can be pulled above water and replaced.
Pool Lights Are Safe
Pool lights are designed to minimize risk of injury from electricity—the whole light fixture is tightly sealed against water entering for exactly this purpose. Pool lights also usually have a ground fault circuit interrupter, GFCI, which means even a very tiny leak will shut the power off.