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Yes, most services include testing the system after repairs. Confirm with your provider.

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 you need to visually inspect your Christmas lights to determine which are good and which need replacement, there are a few things to look for. First, look for discoloration, such as a dark spot or two on the inside of the glass. The spot is an indication of a burnt filament. Also, look for missing filaments, cracked bulb glass, and broken sockets.

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.