9 Common Causes of Low Voltage Transformer Failures in Outdoor Lighting

        Outdoor landscape lighting is the best way to add visual appeal and increase safety and security to outdoor spaces such as decks, patios, pool areas, gardens, and more. With these lights, outdoor spaces can become the best spot to hang out with friends and family for dinners or movie nights under the stars.

        Low-voltage transformers are an essential part to an outdoor landscape lighting system as it reduces the typical 120V that usually runs through a residential property to a safer and more manageable 12V-14V. As it supplies power to the outdoor landscape lighting system, if a transformer fails, the lights won’t turn on.   

        This week’s blog posts covers some common reasons why transformers for an outdoor landscape lighting system might fail and offers some tips to keep the lights on.  

The 9 Common Causes

        When a transformer doesn't seem to work, it can cause great frustration. Know the common causes for transformer failure by referencing the below list and get power back to the outdoor landscape lights.

1. Overloading

        Don't add too many lights. Transformers shouldn't exceed 80% of their capacity. If an electrical load is too much, add another transformer or get a bigger one.

2. Bad Connections

        Loose or corroded connections can cause excessive heat, which  is not good for a transformer’s performance. Check all electrical connections regularly to confirm that they are tight and corrosion free.

3. Incorrect Voltage

        Transformers can also malfunction by inputting the wrong voltage or incorrect wiring. Confirm that the input voltage is correct and use correct wiring practices.

4. Improper Installation

        Proper installation of transformers avoids issues such as using the wrong wire size or inadequate ventilation. These issues can lead to the transformer overheating or short circuiting. Refer to manufacturer's guidelines for installing transformers.

5. Weather Conditions

        Transformers need to be protected from harsh weather conditions. Exposure to rain, snow, and ice can lead to issues such as water ingress, rust, and insulation breakdown. To avoid all this, check to see that the transformer is rated for outdoor use, don't install them in areas, and that they are sealed properly.   

6. Degradation Over Time

        The natural wear and tear of transformers and their parts will cause a transformer to be inefficient and possibly fail. Replace parts as necessary or replace the entire transformer unit to ensure outdoor landscape lights remain lit.

7. Low-quality Transformers

        Invest in high-quality transformers that won’t break down as easily or often, saving on time, effort, and costs.

8. Electrical Surges

        Unexpected spikes in voltage, like power surges or lighting strikes, can damage transformers by burning out their internal parts. Protect transformers against surges by using surge protectors and grounding methods.

9. Excessive Cable Length

        Too long wire runs and not taking into consideration voltage drop can put a strain on the transformer and cause lights to dim. Avoid this by minimizing voltage drop, use the right size cable, or add another transformer to handle the electrical load.

        By avoiding these factors, the likelihood of transformer failure is reduced. After all, a well-functioning transformer ensures a reliable outdoor landscape lighting system.

Shop Our Selection of Low-Voltage Transformers at LightCh8in  

        A low-voltage transformer is how an outdoor landscape lighting system is powered. Without a functioning transformer, the lights simply won’t turn on. Keep the common reasons for failures of low-voltage transformers in mind when installing low-voltage transformers for outdoor landscape lighting systems to help prevent issues and future failures.

        Create a LightCh8in account or log into your account to access the best deals on low-voltage transformers for landscape contractors. Our selection of low-voltage transformers include many different sizes and cores like toroid and EI. No matter the size of an outdoor landscape lighting project, we’ve got the perfect size transformer to power it and transform any outdoor space into a magical, nighttime paradise.