What is the line to line voltage on the secondary side of a distribution transformer rated 2400/4160Y-120/240?

The correct answer is 240 volts, which represents the line-to-line voltage on the secondary side of a distribution transformer rated at 2400/4160Y-120/240.

In this scenario, the transformer has a primary winding with a voltage of 2400 volts to ground and a secondary winding designed to deliver 120 volts phase to neutral, with a line-to-line voltage of 240 volts. This is derived from the configuration of the secondary winding, where in a split-phase system typically used in residential applications, the 120 volts is the phase voltage measured from one side to neutral, while the line-to-line voltage is doubled to give 240 volts when measuring across the two phases.

Understanding these voltage levels is crucial for linemen as they deal with the distribution of electricity, ensuring the correct voltage is delivered according to the requirements of the connected loads. The other options do not apply as they reference voltages that are not relevant to the secondary side of this specific transformer configuration. The primary winding voltages (2400 and 4160 volts) correspond to the input side of the transformer, while 600 volts does not align with the characteristics of this particular machine, which emphasizes the 120/240 volt secondary output.