If the secondary internal connections are connected in parallel, what is the voltage available on the low side of the transformer rated 2400/4160Y-120/240?

In a transformer with a configuration rated at 2400/4160Y-120/240, the voltage available on the low side depends on the transformation ratio and the connections made. The secondary winding is designed to deliver either 120 volts or 240 volts, depending on how it is used.

When the secondary internal connections are made in parallel, the output voltage from the winding remains the same as it is rated for 120 volts. This is because connecting the secondary in parallel allows for increased current capacity while maintaining the same voltage. In this scenario, the primary side operates at a higher voltage (2400 volts or 4160 volts depending on the connection), but for the secondary, the configuration allows either 120 volts to be drawn from it when the load requires that lower voltage.

Thus, the correct interpretation of the transformer specifications and its configurations indicates that, under parallel conditions on the low side, the voltage available is indeed 120 volts. This understanding is critical when designing systems that operate within specified voltage requirements for safety and performance.