Landscape Transformer Safety

Low-voltage landscape lights are now the standard for residential outdoor lighting. It's not just energy efficiency and easy installation that makes low-voltage landscape lights popular. They're also safer than high-voltage systems because of the reduced voltage used by each fixture. However, there are some important safety rules to follow when using a landscape transformer.

Low-voltage transformer safety tips

The job of a low-voltage landscape transformer is to reduce or "step down" the voltage of a home's 120-volt electrical current to the 12-volt current used by low-voltage landscape lighting fixtures. The landscape transformer is positioned outside and should be covered by a large plastic box that goes over and around its power cord.

A landscape transformer must be plugged into a GFCI-protected electrical receptacle. GFCI stands for ground fault circuit interrupter. If the GFCI device senses a short or leakage in the circuit, it shuts off energy to the circuit to prevent possible electrical shock.

Do not use an extension cord to plug in a landscape transformer. Position your low-voltage landscape lighting transformer close enough to the electrical outlet that it can plug in on its own.

Landscape transformers and wiring safety

Every landscape transformer has a maximum wattage capacity. Along with the combined wattage of each landscape light, add one watt for every 10 feet of cable run. If the combined total exceeds your low-voltage transformer's capacity, you'll need to run off of two transformers or one stronger transformer.

Low-voltage landscape cable is weatherproof and shock-resistant. But for added safety and a more natural landscape appearance, consider burying your low-voltage cable several inches below the ground. If you have pets that like to dig, run the cable through hollow PVC pipe for additional protection.