Home Garden

Reasons for Low Voltage Light Failure

Outside lighting offers guidance for visitors in the evening, as well as providing an aesthetically pleasing exterior appearance for a home. Typically, low voltage lighting is installed for a soft glowing illumination, as opposed to a standard 120 volt AC (alternating current) system. Low voltage lighting can develop failures in specific sections, or even along the entire line length.
  1. Low Voltage Lighting Features

    • Low voltage lighting consists of a transformer attached to a hard-wired set of lights, varying in length. The transformer plugs into a standard wall outlet, decreasing the voltage output from the normal 120 volts to 12 volts. The lights are strategically placed along a walkway or any other desired area. The wiring between each light assembly is simply hidden just under the surface of the soil. Some lighting models come with a light sensor that automatically triggers the system when the sun sets. Other models have a simple timer mechanism manually set by the homeowner for automatic illumination during a specific time span.

    Poor Connection

    • One common reason for low voltage light failure is a poor electrical connection. A homeowner should verify that the transformer is plugged into the outlet completely. Check the attached wiring for any cuts or loose connections. Wires hidden beneath the soil may become damaged from lawnmowers or other tools. Check the wire's entire length for any damage or crimps.

    Light Bulbs

    • Confirm that all light bulbs are snugly connected to their individual sockets. A loose bulb, or set of bulbs, can cause lighting failure. Replace light bulbs that won't illuminate, possibly from being burned out.

    No Power

    • Should the entire line length fail to illuminate, confirm that the attached circuit breaker hasn't tripped Check that the light system's attached timer is set correctly for morning or night, provided the system doesn't have an automatic sensor. Alternatively, systems with sensors can be verified for functionality by covering the sensor's eye, mimicking nighttime. The light system should illuminate if the sensor is operational.

    Dim Lighting

    • If lights are dimmer near the end of a lighting system's line length, those lights may not have the adequate voltage needed for proper illumination. Typically, dimming lights are caused by an extra lighting line added to the system. Reduce the line's length and remove light bulbs. Verify that each bulb's wattage is the specific value that the lighting system's manufacturer specified in the owner's manual. A high wattage bulb can pull too much voltage, affecting the lighting over the entire line.