What is the voltage measured between any two line conductors of a balanced three-phase system?

In a balanced three-phase system, the voltage measured between any two line conductors is referred to as line voltage. This is significant because line voltage represents the potential difference that is available for transmitting power. In three-phase systems, each conductor carries the same amount of current but with a phase difference, typically 120 degrees apart.

The line voltage is higher than the phase voltage, which is the voltage measured across a single phase to neutral. To put it in context, the relationship between phase voltage and line voltage can be summarized with the equation:

Line Voltage (V_L) = √3 × Phase Voltage (V_Ph)

This equation is fundamental in understanding three-phase power systems as it illustrates how line voltage is derived from phase voltage in a balanced system. Hence, the measure of line voltage is crucial for engineers and contractors working with electrical systems, since it impacts the design and analysis of circuits, load calculations, and equipment ratings. Understanding this concept helps ensure the proper functionality and safety of electrical installations.