A transformer has a coil voltage of 7200 to 240 volts. If the full load current on the high side is 5 amps, what is the full load current on the low side?

To determine the full load current on the low side of a transformer, it's essential to use the principle of power conservation, which states that the power input on one side of the transformer equals the power output on the other side, neglecting losses.

The power (in watts) in an electrical circuit is calculated using the formula ( P = V \times I ), where ( P ) is the power, ( V ) is voltage, and ( I ) is current.

Given the transformer has a voltage ratio of 7200 volts (high side) to 240 volts (low side), we can set up the following relationship based on the conservation of power:

1. Calculate the power on the high side:

• High side voltage = 7200 volts

• High side current = 5 amps

• Power on the high side ( P_{high} = 7200 , \text{volts} \times 5 , \text{amps} = 36000 , \text{watts} )

2. Now, calculate the full load current on the low side knowing that the power remains the same at full load (ignoring losses):

• Low side voltage =