Yes, outdoor lights and receptacles should be on a ground-fault circuit interrupter (GFCI) for safety. The outdoors is considered a wet location where GFCI protection is generally required. A GFCI enhances safety by automatically tripping and shutting off the circuit if it detects an imbalance, which protects against electrocution and reduces the risk of an electrical fire. While it is the safest approach for all outdoor electrical components, specific requirements can vary depending on the type of light (e.g., pool lights), its location, and local electrical codes. For guidance tailored to your specific situation, it's best to consult a professional electrician.

If half of a string of Christmas lights is out, it is likely because of a single burned-out, loose, or broken bulb within that section. Long strands of lights often contain more than one circuit, so when one bulb fails, it can cause the entire circuit (or half the strand) to go dark. To fix this, inspect the unlit section and test each bulb to ensure it is tight and functioning properly. Replacing the faulty bulb or repairing a damaged shunt will typically solve the problem.

Pool lights are designed to be safe by protecting swimmers from electrocution. These lights are made with waterproof fixtures and seals to prevent contact with the water.

Electrocution from pool lights is still possible, but rare. Faulty wiring or broken lighting equipment can make lights unsafe, so it’s important to replace lights as needed and have an electrician inspect and upgrade the wiring.

If you take home a pre-lit Christmas tree but want to spruce it up with blinking lights, don’t worry, there’s a simple solution. You can easily replace the light bulbs on the pre-lit tree with flashing bulbs. For a more subtle look, only replace some of the bulbs with flashing bulbs.