FAST and reliable same day shipping on all orders placed before 4pm EST

Is Voltage on a Landscape Lighting Fixture Important?

how important is voltage in landscape lighitng

Landscape lighting fixtures not only enhance the aesthetics of your outdoor space but also provide essential illumination and security during the evening hours. However, ensuring these fixtures receive the correct voltage is vital to their functionality and longevity. In this article, we will guide you through the process of checking the voltage on a landscape lighting fixture. We will cover various aspects such as the proper voltage for Total Light Landscape Lighting fixtures, voltage drop, using a volt meter to measure voltage, the risks of excessive voltage, and the impact on lamp or fixture life.

Why is Proper Voltage Important for Landscape Lighting Fixtures?

Proper voltage is crucial for the optimal operation of landscape lighting fixtures. Each fixture is designed to work within a specific range, usually 12 volts for Total Light Landscape Lighting fixtures. Deviating from this voltage range can result in several issues such as dim illumination, inconsistent performance, and reduced lifespan of the lamps and fixtures.

Maintaining the appropriate voltage ensures that the fixtures operate at their intended brightness and functionality. It also prevents overloading or underpowering the fixtures, which can cause premature burnout or decreased light output.

Checking Voltage Using a Volt Meter

digital multimeter voltage tester

A volt meter is an essential tool for measuring voltage accurately. By using a volt meter, you can check the voltage on a low voltage lighting fixture to ensure it falls within the recommended range.

The volt meter provides a digital or analog display of the voltage reading, allowing you to assess whether the fixture receives the desired voltage.

How to Check the Voltage on a Landscape Lighting Fixture?

To check the voltage on a outdoor lighting fixture, you will need a few tools: a volt meter and a pair of test leads. A volt meter is a device used to measure electrical voltage, and it provides accurate readings to help you assess the level at your fixtures.

Follow these steps to check the voltage on a low voltage lighting fixture:

  1. Prepare the Volt Meter: Set your volt meter to the appropriate range, typically AC 0-20 volts or similar. Ensure the test leads are properly connected to the meter.

  2. Disconnect Power: For safety reasons, turn off the power supply to the lighting system. This step is crucial to avoid electric shock while conducting measurements.

  3. Connect the Test Leads: Connect the test leads of the volt meter to the wires supplying power to the landscape lighting fixture. The positive lead connects to the positive wire (usually red or marked with a "+" sign), and the negative lead connects to the negative wire (usually black or marked with a "-" sign).

  4. Measure the Voltage: Turn on the power supply and observe the volt meter. It will display the voltage reading, indicating the level at the fixture. Ensure the voltage falls within the recommended range, typically 11-13 volts for 12V fixtures.

  5. Analyze the Results: Compare the measured voltage with the recommended range. If the reading falls within the specified range, your landscape lighting fixture is receiving the appropriate voltage. However, if the reading is significantly higher or lower, you may need to take corrective measures to address excessive voltage or drop.


Proper Voltage of 12V for Total Light Landscape Lighting Fixtures

Total Light Landscape Lighting fixtures are designed to operate at 12 volts. This voltage is considered optimal for these fixtures, as it provides the right balance between energy efficiency, brightness, and longevity. Operating the fixtures at voltages higher or lower than the recommended 12V can lead to performance issues and a shortened lifespan.

Understanding Voltage Drop and Its Impact

Voltage drop refers to the decrease in volts that occur along a wire or conductor due to the resistance encountered. In outdoor lighting systems, voltage drop can happen when the length of the wire exceeds a certain distance or when the wire gauge is inadequate to handle the current load.

When voltage drop occurs, the fixtures located farthest from the power source may receive lower levels than intended. This can result in dimmer illumination and compromised performance. Voltage drop can also lead to increased energy consumption and decreased lamp or fixture life.

Addressing Voltage Drop

multi tap voltage transformer

Moving Up to 13-15 Volts on the Transformer Tap

When faced with voltage drop issues in a low voltage lighting system, one solution is to adjust the transformer tap settings. Transformers used in low voltage lighting installations often feature multiple taps, allowing you to select different output voltages.

To address voltage drop, you can try moving up to a higher setting on the transformer tap. Increasing the voltage output to 13-15 volts can compensate for the loss along the wire and help achieve the desired 12-volt level at the fixtures. This adjustment can effectively mitigate the impact of voltage drop and restore proper illumination and performance.

Running a New Piece of Wire

In some cases, adjusting the transformer tap settings may not be sufficient to overcome significant voltage drop. When voltage drop is severe, or when the existing wire length or gauge is inadequate, running a new piece of cable becomes necessary.

By running a new wire for the fixtures experiencing voltage drop, you can minimize resistance and ensure a more stable and appropriate supply. It is essential to use the correct wire gauge and follow proper installation techniques to maximize the effectiveness of this solution.

The Risks of Having Too Much Voltage at the Fixture

While voltage drop is a common concern in low voltage lighting systems, having too much voltage at the fixture can also be problematic. Excessive voltage can lead to accelerated wear and tear, reduced lifespan of lamps and fixtures, and potential safety hazards.

When the voltage supplied to the fixture exceeds the recommended level, the excess energy can cause the lamp to burn hotter, leading to premature failure. Over time, the excessive volts can damage the fixture's internal components, affecting its overall performance and reliability.

To avoid the risks associated with excessive voltage, it is crucial to ensure that the fixtures receive the specified voltage within the recommended range.

Decreased Life of the Lamp or Fixture

Blaze up light with MR16 lamp

Operating landscape lighting fixtures at incorrect voltages, whether too low or too high, can significantly impact their lifespan. When the voltage is lower than the recommended level, the fixtures may not provide sufficient illumination and may wear out more quickly due to increased stress on the components.

Conversely, excessive voltage can cause lamps to burn hotter, resulting in a shorter lifespan. The excessive energy can also strain the fixture's internal wiring and components, leading to premature failure and the need for replacement.

By maintaining the proper voltage and addressing any voltage drop issues, you can help extend the life of your landscape lighting lamps and fixtures, saving both time and money in the long run.


1: How Can I Determine the Correct Voltage for my Landscape Lighting Fixtures?

To determine the correct voltage for your landscape lighting fixtures, refer to the manufacturer's specifications or documentation. They will provide the recommended voltage range for optimal performance and longevity. If you are unsure, consult a professional electrician or a landscape lighting specialist to ensure the proper voltage for your specific fixtures.

2: What Causes Voltage Drop in Landscape Lighting Systems?

Voltage drop in landscape lighting systems can occur due to several factors. The most common causes include the length of the wire exceeding a certain distance, inadequate wire gauge for the current load, or the presence of connectors with high resistance. These factors contribute to increased resistance along the wire, resulting in voltage loss.

3: How Do I Use a Volt Meter to Check the Voltage on a Landscape Lighting Fixture?

Using a volt meter to check the voltage on a landscape lighting fixture is relatively straightforward. First, set the volt meter to the appropriate voltage range. Then, disconnect power, connect the test leads of the volt meter to the wires supplying power to the fixture, and turn on the power supply. The volt meter will display the voltage reading, indicating the voltage level at the fixture.

4: Can I Increase the Voltage on the Transformer Tap to Compensate for Voltage Drop?

Yes, increasing the voltage on the transformer tap is a common method to compensate for voltage drop in landscape lighting systems. By moving up to a higher voltage setting, such as 13-15 volts, you can offset the voltage loss along the wire and ensure that the fixtures receive the desired 12-volt level.

5: Is Running a New Piece of Wire the Only Solution for Fixtures Experiencing Voltage Drop?

Running a new piece of wire is one effective solution for fixtures experiencing significant voltage drop. However, it is not the only option. Other measures, such as adjusting the transformer tap settings, optimizing wire connections, or using wire splices to reduce resistance, may help alleviate voltage drop issues. The best course of action depends on the specific circumstances of your landscape lighting system.

6: What Are the Consequences of Having Too Much Voltage at the Landscape Lighting Fixture?

Having too much voltage at the landscape lighting fixture can lead to various consequences. The excessive voltage can cause the lamp to burn hotter, resulting in accelerated wear and reduced lifespan. It can also strain the fixture's internal components, compromising its performance and reliability. Additionally, excessive voltage poses safety risks and can lead to electrical hazards.


Checking the voltage on your landscape lighting fixtures is essential to ensure proper functionality, performance, and longevity. Maintaining the recommended voltage, such as 12V for Total Light Landscape Lighting fixtures, is crucial for optimal illumination and the lifespan of lamps and fixtures. By understanding voltage drop, using a volt meter to measure voltage, and addressing any voltage drop issues, you can ensure your landscape lighting system operates at its best. Remember to consult manufacturer guidelines, seek professional assistance when needed, and prioritize safety throughout the process.

Leave a comment

Please note, comments must be approved before they are published