Outdoor lighting in Centennial takes more abuse than interior fixtures. Colorado’s UV exposure, temperature swings from summer heat to winter cold, and freeze-thaw cycles all stress outdoor wiring, connections, and fixtures over time. When outdoor lighting stops working, the cause could be a failed fixture, a moisture-damaged junction box, a GFCI trip, or a wiring fault in the circuit. WireNut traces the actual cause and fixes it correctly rather than swapping fixtures and hoping the problem goes away.

For outdoor lighting that needs to be replaced or expanded rather than repaired, our outdoor lighting installation team handles the new work. For GFCI issues that are part of a broader outlet and circuit evaluation, our outlets and switches service covers that scope. See all Centennial electrical services.

• Dead outdoor fixtures where the fixture has stopped working, traced to determine whether the cause is the fixture, the circuit, or a GFCI trip upstream.
• GFCI trips on outdoor circuits traced to find the specific source of the ground fault, which is often moisture in a junction box or a failing outdoor fixture.
• Motion sensor failures where the sensor has stopped activating the fixture or activates erratically, often caused by sensor degradation or wiring issues.
• Wiring faults in outdoor circuits caused by physical damage, moisture infiltration, or age-related insulation breakdown in exterior wiring.
• Fixture replacement when the fixture itself has failed beyond repair and needs to be swapped for a new properly rated unit.

Here are the outdoor lighting repair calls our Centennial electricians handle most often.

Why Do My Outdoor Lights Keep Tripping the GFCI in Centennial?

Repeated GFCI trips on an outdoor circuit are almost always caused by moisture getting into a location it should not be. Common sources include a junction box with a deteriorated seal or missing weatherproof cover, a fixture with a cracked housing that is allowing moisture to reach the wiring inside, or an underground section of wiring where the insulation has broken down and is allowing ground contact when wet. The GFCI is doing its job in each of these cases, but that does not make the repeated trips any less frustrating.

The fix requires finding the moisture source and eliminating it, not just resetting the GFCI. WireNut traces the source of the trip, repairs or replaces the affected component, and confirms the circuit holds through a weather simulation before calling the repair complete.

Why Do My Outdoor Motion Sensor Lights Act Erratically in Centennial?

Motion sensor lights that trigger without anyone present, fail to trigger when someone approaches, or cycle on and off without a clear pattern are usually dealing with one of a few issues. The sensor may be positioned to pick up heat from an air conditioner condenser, a street or neighbor’s light, or an HVAC vent that triggers false activations. The sensitivity and timing settings on the sensor may need adjustment. Or the sensor itself may be aging and no longer functioning within its rated parameters.

WireNut can check the sensor positioning, adjust sensitivity and timing settings if adjustable, and replace the sensor if it has failed. In Centennial’s climate, outdoor motion sensors exposed to significant UV and temperature cycling have a limited practical service life and often need replacement after several years of outdoor exposure.