Low-Voltage or Line-Voltage Landscape Lighting: Which Do You Need?

Strip away the fixture catalogs, and one thing separates these two systems. It's where the voltage gets stepped down.

A low-voltage system uses a transformer. Power leaves your house at 120 volts, reaches the transformer, and comes out the other side at 12 volts. Everything past that point runs on the lower voltage. That single difference is why code treats the two systems differently, from burial depth to wiring method.

A line-voltage system skips the transformer. Full 120-volt power runs all the way out to every fixture in your yard.

Every other difference follows from that one. How deep the wire has to go, how safe it is around water, how many fixtures you can choose from, and who's allowed to install it all trace back to where that voltage drops.

The clearest way to see who does what is to follow the electricity. Here's the path it takes, from inside your house to the light in your yard.

1. The panel. Every outdoor lighting system starts at your electrical panel, on a circuit. If your yard needs a new circuit, adding it is electrician work, no matter which type of lighting you choose.
2. The outdoor outlet. A low-voltage transformer plugs into an outlet on the outside of your house. That outlet needs to be weather-resistant, GFCI-protected, and covered by an in-use cover. If the right outlet isn't where your transformer needs to go, that's electrician work too.
3. The transformer. In a low-voltage system, this is where 120 volts becomes 12. It's sized to the fixtures it powers and mounted according to the manufacturer's instructions.
4. The cable. Low-voltage cable runs shallow, just under the soil or mulch. Line-voltage cable runs deep and has to be protected inside conduit.
5. The fixture. Every outdoor fixture has to be rated for where it sits. That means wet-rated for full weather exposure, or damp-rated for covered spots like a porch.

Here's what that path shows. In a line-voltage system, every stop is electrician work. In a low-voltage system, stops one and two still are.

For most homes, low-voltage covers everything you'd want to light. It's the standard choice for residential landscape design, and here's why.

• Paths, beds, and trees. Low-voltage handles walkway lights, garden accents, and uplighting on trees.
• Anywhere near water or people. The lower voltage cuts shock risk around pools, water features, garden beds, and places where kids play.
• More fixture choices. Low-voltage fixtures come in far more styles, sizes, and finishes than line-voltage ones.
• Room to change your mind. Because the wire runs shallow, fixtures can be moved as your trees grow and your plantings fill in.

That last point matters more than people expect. A young landscape looks nothing like it will in ten years. A system you can re-aim keeps up with it instead of fighting it.

Line-voltage has a narrower job in a residential yard, but it does that job well. These are the situations where it makes sense.

• Large areas that need a lot of light. Line-voltage fixtures run brighter, so you need fewer of them to cover a big space.
• Security lighting. Floodlights meant to light a driveway or a side yard are a common line-voltage use.
• Very bright fixtures. Some fixtures simply need full household voltage to perform.
• Fixtures that won't move. Because the wiring sits deep in conduit, line-voltage fixtures are built to stay put.

That permanence cuts both ways. Moving a line-voltage fixture a few feet later means digging and bringing an electrician back.

Line-voltage lighting is always a job for a licensed electrician. It's treated as a standard electrical installation, which typically means a permit and an inspection.

Your yard has a say in this, too. What's already in the ground shapes which system makes sense.

Established landscaping. Line-voltage wiring runs deep, so installing it means trenching through whatever sits in the path. Mature beds, sod, and hardscape all get disturbed along the way. Low-voltage wire runs shallow, so it can often work around what you've already built.

Tree roots. Deep trenches cut through root systems. Shallow low-voltage wire can weave around them instead, which matters in a yard with trees you want to keep.

Irrigation lines. Sprinkler lines sit in the same shallow soil as landscape lighting wire. Mark your irrigation lines before anyone digs, so neither system damages the other. It's the same reason irrigation matters when replacing a water line.

A landscape that's still growing. Young plantings will fill in and change over the next several years. Flexible low-voltage wiring lets your lighting keep up as they do.

We install landscape lighting throughout Frisco, McKinney, Plano, Allen, The Colony, Little Elm, Prosper, Celina, Carrollton, and Lewisville.

Some homeowners want the whole system installed. Others plan to set their own low-voltage fixtures and just need the power side done right. Either way, we can help. For a lot of DIY projects, the outdoor GFCI outlet and the circuit behind it are the entire job.

If you're leaning toward line-voltage, that's electrician work from the panel to the last fixture. We'll handle the permit and the inspection it typically needs.

Why Frisco homeowners call Berkeys:

• Licensed electricians who are background-checked
• Frisco electricians with 50 years of North Texas behind them
• Free estimates available
• Transparent pricing before any work begins
• A 4.9-star Google rating from more than 1,600 Frisco reviews

We answer calls 24/7, and same-day service is available. You can read our Frisco Google reviews to see what your neighbors say. When you're ready, learn more about our outdoor lighting installation in Frisco.

Ready to light up your yard? Whether you need a full landscape lighting system or just the right outdoor outlet for your transformer, our Frisco electricians can handle it. You'll get transparent pricing before any work begins. Call (214) 216-1727 for outdoor lighting installation in Frisco.

We answer calls 24/7. Want to see what your Frisco neighbors say first? Read our Frisco Google reviews.

Business Address: 4645 Avon Ln Suite 260, Frisco, TX 75033