Choosing the Right Size Low Voltage Transformer for Your Landscape Lighting

While most people don’t pay much attention, choosing the right size of low voltage transformer can make or break your outdoor lighting setup. These transformers safely convert high input voltage into safer, low output voltage without compromising on the glow. Even better, they do so without straining the system or causing any trips down the line.

If you’re executing your landscape lighting plan any time soon, we’re here to help. In this guide, we’ll explain exactly how to choose the right size low voltage transformer for your backyards, patios, and lawns. Let’s begin.

Click here to see the full landscape light installation process

What is a Low Voltage Transformer?

Also known as a step-down transformer, a low voltage transformer is a device that changes the standard 120-volt current to a low output current, typically around 12-14 volts. This reduced voltage ensures your outdoor lighting isn’t just safe but consumes much less energy than typical outdoor lighting systems.

These transformers are made up of primary and secondary coils, both of which wrap around the core. The primary coil gets the high-voltage current, while the secondary winding induces the current to produce energy in the load. This, in turn, enhances the aesthetics and functionality of your outdoor spaces.

Choosing the Right Size Low Voltage Transformer for Landscape Lighting

Today, low-voltage transformers are becoming a highly popular choice for homeowners, especially when it comes to lighting up their outdoors. However, not many people pay attention to getting the ‘right’ size of these transformers. Unsurprisingly, this leads to inefficiency and safety issues when lighting up your outdoors.

So, here’s how to choose the right size of low voltage transformers to ensure your landscape lighting is as flawless as it gets:

Understanding the Total Wattage of the Outdoor Lighting System

First things first, it’s essential to understand the total wattage your landscape lighting setup requires. The more wattage your fixtures require, the higher the capacity of your transformer must be. To get this right, you must first calculate the total wattage using some quick math.

Calculating the Total Wattage

To begin, note down all the light fixtures you’re planning to install, including spotlights, path lights, and well lights. Then, check their packaging or manual for the wattage they produce, then add them all up.

Let’s say you have 6 well lights at 10 watts each and 4 spotlights at 20 watts each. The total wattage would be:

(6 x 10W) + (4 x 20W) = 140W

Consider a Safety Buffer

It’s advisable to use only 80% of the transformer’s maximum capacity. For example, with a 200-watt transformer, you should only connect lights that sum up to around 160 watts. This buffer system makes up for any potential expansions or power spikes.

Another fairly popular advantage for considering a buffer is that if you plan to expand your outdoor lighting system, you won’t need to buy another transformer.

Choose Between Magnetic vs. Electronic Transformers

Now that you have a rough idea of the size of transformer you should get, it’s time to choose between the two major types in the market: Magnetic and Electronic Transformers.

Although both outwardly serve the same purpose, magnetic transformers are usually more reliable and built to handle higher loads. On the flip side, electronic transformers are lightweight and may not handle as much wattage, but they’re incredibly pocket-friendly. Since they’re easy to install, they also work wonders for DIY enthusiasts.

Determine the Right Placement for Your Transformer

In addition to size, where you place your transformers also plays a pivotal role in determining how your landscape lighting setup turns out. Ideally, install it as close to your lighting fixtures as possible to avoid voltage issues and ensure consistent light.

The best thing you can do is to either mount it to the wall or attach it to a Ground Fault Circuit Interrupter (GFCI) to avoid electrocution. This helps you, especially during the wet season when your outdoor lights are damp the whole time.

Final Considerations

Before installing the step-down transformer, there are a few things to keep in mind. Consider the manufacturer’s transformer recommendations for fixtures so they’re compatible. Make sure you get the calculations right to avoid overloading your transformer or getting a larger one. Don’t forget to inspect the wiring of the kits to avoid any electrical issues down the road!

Quick Tips for Optimal Transformer Installation

Here are some quick tips to get everything right while installing your low voltage transformer for landscape lights:

1. Install it in a dry spot away from sunlight and watery areas to avoid damage.

2. Ideally, mount it at least 12 inches above the ground to prevent contact with the ground.

3. Make sure there’s enough air space around the transformer so overheating won’t disrupt your lighting setup.

4. Don’t push the transformer to its maximum capacity. Instead, use only 80% of its maximum capacity.

5. Lastly, place it near an outdoor outlet so you won’t have to deal with long wiring.

FAQs

Can I Use One Low Voltage Transformer to Light Up Multiple Zones?

Yes, a single low voltage transformer can be used to light up multiple zones, as long as you don’t wish to control them independently. It also depends on your transformer’s capacity and the total wattage of the fixtures you’re powering.

What is the Best Location to Install My Low Voltage Transformer for Outdoor Lighting?

The best spot to install your low voltage transformer is to either mount it to a wall near an outdoor outlet or attach it directly to the structure. A golden rule is to keep it at least 11-12 inches above the ground to avoid water, moisture, or dirt buildup issues.

What Happens if We Use an Undersized Transformer for Landscape Lighting?

Using an undersized transformer for landscape lighting often overloads it, which results in flickering or no lights at all. Much worse, it poses safety risks to homeowners, such as overheating or explosions.

Conclusion

An aesthetically lit outdoor space is great, but it can only be sustained with the right low voltage transformer setup. From selecting the right size to doing the final checks, each step counts in brightening up your outdoors as soon as the sun sets. However, with the right planning, your backyard becomes a wholesome place to gather everyone for perfect nights!

Ready to transform your outdoor space into a bright, welcoming spot? Turn to Gardenreet, and let us take care of the rest!