Explanation of voltage in lighting

Voltage, also known as electrical voltage, indicates how much electrical energy is available to power a lamp. Voltage is measured in volts (V). The unit “volt” is named after the Italian physicist Alessandro Volta, an important pioneer in the development of electricity.

Why is voltage important for lamps?

Voltage determines which type of power supply a lamp can be connected to. Using the wrong voltage may cause the lamp to stop working or even become damaged. Therefore, always check the specified voltage on the lamp, the packaging, or in the product specifications before installation.

Common voltages in lighting

In and around the home, two types of voltage are most common: 230V and low voltage (for example 12V).

• 230V is the standard mains voltage in homes. Many ceiling lights, wall lights, and LED lamps are designed for direct connection to 230V.
• 12V (low voltage) is often used when extra safety or flexibility is required, such as in garden lighting, accent lighting, or applications near humid areas. A transformer or driver is usually needed to convert 230V to 12V.

LED lighting and voltage

LEDs naturally operate at a lower voltage. That is why many LED solutions work on 12V or 24V. In such cases, a suitable LED driver is required. There are also LED lamps that operate directly on 230V, with the necessary electronics built into the lamp.

Which option suits your situation?

For general indoor lighting, 230V is often the most practical choice, as the lamp can be connected directly to the mains supply. For outdoor lighting, children’s environments, or situations where safety is especially important, low voltage (such as 12V) can be a smart option. Choosing the correct voltage ensures safe installation and a longer lifespan for your lighting.