The Easiest Way to Install Low-Voltage Landscape Lighting

Low-voltage landscape lighting can change the look and feel of any yard or storefront. It runs on 12 volts. Because it runs on 12 volts only, there are two benefits in play, first is the shock risk – it is really low, and secondly you don’t have to worry about getting a permit (which is normally required). Done well, it guides guests, reduces trips, and highlights features.

Below we’ll go over some quick steps on how to easily install outdoor landscape lighting without hiring an electrician.

Why choose low-voltage lights?

Choosing low-voltage landscape lights for your home is a better option because of multiple aspects:

• It’s safer to handle than 120-volt systems
• LED bulbs use little power and last for years
• Easy to expand, just add more fixtures and wire
• Better night-time security and curb appeal

Tools and supplies

You’ll require these tools and supplies:

• Low-voltage LED fixtures
• 12/2 or 14/2 direct-bury cable
• Transformer sized for total wattage
• Waterproof connectors
• Wire strippers, small screwdriver
• Shovel or lawn edger for shallow trench
• Timer or photocell (often built-in)
• Volt-ohm meter for tests

Step-by-Step: How to Install Landscape Lighting

To make the installation really seamless for you, here’s a step by step process to install creative landscape lighting:

• Make a simple plan: Sketch the walkways and beds, then mark each fixture. Keep path lights 6-8 ft apart. Add the wattage numbers so you know the transformer size.
• Place the fixtures: Set each light on the ground where it will sit. Face spotlights toward trees or walls. Leave slack in each lead wire. When you install landscape lighting this way, aiming later is easier.
• Lay the cable: Start at the future transformer spot and run the wire past every fixture. Do not bury yet. Leave 2 ft extra at the transformer.
• Install the lights: Trim the cable on every tap, peel away 1/2 inch insulation and connect the cable-in and cable-out ends of the cable as well as the lead to the fitting with the waterproof connectors. 
• Mount the transformer: Screw it to a wall near a GFCI outlet, one foot above ground. Insert the cable into the cable holder and connect to the12 V lug and the COM.
• Test: Switch on the transformer. Every lamp should glow. A meter should read 11-12 V at the far end. Fix any dark or dim spots before moving on.
• Bury the wire: After testing it you can dig a four to six inch trench next to the run and drop in the cable. Across the lawn, use an edger slit and press the wire down.
• Aim the beams and set the timer: After dark, adjust each head so it lights the target without glare. Program dusk-to-dawn or dusk plus six hours.

Picking the right fixture

Not every space needs the same light. Path lights illuminate to cast a circular shape which not only looks good and enhances the outer look of the home but also helps people see the edge of the walkway. 

Wall-wash fixtures soften large surfaces like fences and retaining walls. Start with the effect you want, then choose fixtures that match beam spread and height. The majority of new units are made of solid brass or powder-coated aluminum and have a factory-installed LED.

Sizing the transformer

Calculate the total wattage that’s being used (include every lamp) and then add to it a 20 percent safety margin. 

In case the distance between the transformer and last light is more than 100 feet, the step of one wire gauge or a model that has more taps so that it can emit 13 or 14 volts can be used to make up the loss. A quality transformer with a dusk sensor and timer outlet gives you flexibility.

Tips for long life

Here are some tips for longer life of low-voltage landscape lighting:

• Keep total load under 80% of transformer rating.
• Match lamp color temperature for a uniform look.
• Dab silicone where wire enters each fixture to block water.
• Coil spare wire behind shrubs for easy future moves.

Seasonal upkeep

LED systems need little care, yet a check every quarter keeps them perfect. Brush dirt off lens covers, clip back any plants that block the beam, and tighten stake collars if frost has lifted them. 

Every spring don’t forget to verify that the photocell and timer still follow sunset (Daylight Saving Time and battery drift can shift the schedule). 

Common mistakes

Conclusion

Small systems are easy DIY, but big trees, multiple zones, or commercial codes add complexity. Tree Amigos of San Antonio designs, installs, and maintains lighting across South Texas. Their crew can size transformers, balance voltage, and service fixtures, saving you time and callbacks. Tree Amigos stands ready to help.