How to Change a Fuse in String Lights: 1 Minute to Brighten Up Your Outdoor Space

Changing a fuse in string lights is a simple yet essential task that can restore your decorative lights to full brightness, especially during holidays or special occasions. Typically, when a string of lights goes out entirely, a blown fuse is the culprit. Here's how to safely and effectively change a fuse in string lights.

Step 1: Unplug the Lights

Safety first—always unplug your string lights from the electrical outlet before examining or working on them. This prevents accidental shocks.

Step 2: Locate the Fuse Compartment

Look for the fuse compartment, usually found in the plug of your string lights. There should be a sliding door or small access panel on the plug itself. Check your manufacturer's instructions if you have trouble locating it.

Step 3: Remove the Old Fuse

Use a small flathead screwdriver or even your fingernail to slide open the fuse compartment. Inside, you’ll find one or two glass tube fuses. Carefully remove the blown fuse(s); you may need to gently tap the plug or use tweezers.

Step 4: Insert the New Fuse

Replace the blown fuse with a new one of the exact same rating (amperage and voltage) as specified by the manufacturer. Using a higher or lower-rated fuse is unsafe and can cause electrical hazards.

Step 5: Close the Compartment and Test

Slide the fuse compartment door back into place until it clicks securely. Plug the lights back in and see if they illuminate as intended.

When working on a home project like updating string lights, I always think through the replacement as it relates to overall design and layout, whether you're decorating a living room, bedroom, or outdoor patio. Map out the placement and ensure electrical outlets are accessible for future maintenance. In fact, planning your layout digitally using a Room Planner can help avoid headaches with outlet locations and reach issues before you even hang your first strand.

Tips 1:

Always keep spare fuses in a small container taped to the cord or stored with your holiday decor. This makes quick replacements easy when a string fails unexpectedly. Also, consider inspecting the wiring annually for wear or damage, especially if you use outdoor lights exposed to the elements.

FAQ

Q: How do I know if my string light fuse is blown?

A: If the entire string fails to light while the bulbs themselves look intact, check the fuse in the plug. A blown fuse often appears dark or has a visible break in the filament.

Q: What kind of fuse should I buy for string lights?

A: Check your light's user manual or the original fuse—the replacement must be the same voltage and amperage rating, usually marked on the fuse or plug.

Q: Can I use higher-rated fuses for my string lights?

A: No. Always use a fuse with the exact rating specified. A mismatched fuse rating can cause safety hazards like overheating or electrical fires.

Q: How often should I check my string light fuses?

A: Check the fuses any time the lights go out completely, and do a quick inspection at the start of each season before regular use, especially for outdoor displays.

Q: What if new fuses keep blowing in my string lights?

A: Consistent fuse blowing indicates a likely wiring short, damaged sockets, or too many lights daisy-chained together. Discontinue use and consider replacing the lights or consulting an electrician.