What multiplier can you use to get line voltage using phase voltage?

To determine line voltage from phase voltage in a three-phase system, you can utilize a specific multiplier. In a star (Y) configuration, the relation between phase voltage and line voltage is defined by the square root of three, which is approximately 1.732. This value is commonly rounded to 1.73 in most calculations.

When calculating line voltage, the formula used is:

[ V_{line} = V_{phase} \times \sqrt{3} ]

This indicates that to find the line voltage, you must multiply the phase voltage by approximately 1.73. This relationship is fundamental in power systems, particularly in three-phase circuits, where the distinction between line and phase voltages is crucial for understanding the system's operation and design.

In contrast, the other options do not accurately represent the mathematical relationship needed to convert phase voltage to line voltage in a three-phase system. For instance, 1.41 is the value of √2, which applies to single-phase circuits but does not apply to the three-phase context necessary for this situation, while 1.50 and 2.00 also do not correspond to any standard conversion in power systems.