It’s a classic homeowner headache: the clouds roll in, the rain starts falling, and suddenly your outdoor lights go dark – along with half the outlets in your garage or kitchen. When your outdoor lighting trips the breaker every time it gets wet, it’s usually your GFCI (Ground Fault Circuit Interrupter) doing its job. It detects a “leak” in the electrical current and shuts down to prevent a fire or a nasty shock. Here is a breakdown of why this happens and how to fix it before the next storm hits.

1. Moisture in the Fixture

This is the most common culprit. Even “weatherproof” lights can develop cracks in the housing or have worn-out gaskets over time.

• The Issue: Rainwater seeps into the decorative housing and touches the bulb socket or the wiring connections.
• The Fix: Inspect your fixtures for standing water or condensation. Wipe them dry and replace any brittle rubber seals or cracked glass.

2. Water in the Outlet Box

If your lights are plugged into an exterior outlet, the “bubble cover” might not be as watertight as you think.

• The Issue: If the outlet box isn’t sealed against the siding of your house, water can run down the wall and straight into the back of the electrical box.
• The Fix: Check the caulking around the top and sides of the outlet box. If it’s peeling, apply a fresh bead of silicone sealant.

3. Damaged Underground Wiring

If you have path lights or lamp posts, the wires are likely buried underground.

• The Issue: Over time, shifting soil, rocks, or even a stray shovel blade can nick the protective coating on “direct burial” wires. When the ground gets saturated with rain, that water finds the nicked wire and creates a short circuit.
• The Fix: This usually requires a professional to test the continuity of the line and potentially bypass the damaged section of wire.

4. Debris and Bug Nests

Believe it or not, nature can be conductive.

• The Issue: Spiders, wasps, and ants love the warmth of light fixtures. They build nests out of mud or silk that can hold onto moisture long after the rain stops, creating a “bridge” for electricity to jump where it shouldn’t.
• The Fix: Open up the fixtures and give them a good cleaning. A quick spray of compressed air or a soft brush can clear out the debris.

Contact Kanon Electric for All Your Outdoor Lighting Needs in Tacoma, WA and the Surrounding Areas

If you’ve dried out your fixtures and checked your outlets, but the breaker still trips the moment a drizzle starts, you likely have a deeper wiring issue or a faulty GFCI breaker that needs replacing. Working with electricity in wet conditions is dangerous. If the simple DIY fixes don’t work, it’s time to call in a licensed electrician to safely diagnose the “leak.” That’s where we come in! Kanon Electric is here for all your outdoor lighting needs in Tacoma, WA and the surrounding areas. Contact us today!