208V

208V refers to a nominal voltage level commonly found in North American electrical systems, particularly in commercial and industrial settings. It is a three-phase voltage, meaning it utilizes three alternating current waveforms that are out of phase with each other. This configuration is derived from a higher voltage source, typically 480V, through a transformer.

The 208V system provides a lower voltage option compared to 480V, making it suitable for a wider range of equipment, including lighting, smaller motors, and office equipment. It is often achieved through a Wye (or Star) connection of the transformer windings. In a 208V Wye system, there are three "hot" wires and a neutral wire. The voltage between any two hot wires is approximately 208V, while the voltage between a hot wire and the neutral wire is approximately 120V. This 120V is also commonly available, allowing for standard household and office appliances to be powered from the same distribution system.

While 240V is another common voltage in North America, 208V is prevalent in larger buildings and facilities where the benefits of three-phase power at a lower voltage are advantageous for efficiency and equipment compatibility. Its widespread use in commercial buildings makes it a standard for many types of electrical installations.