Enter the full load power (watts) and the full load voltage (volts) into the calculator to determine the Full Load Current. 

Full Load Current Formula

The following formula is used to calculate the Full Load Current. 

If = Pf/(1.732*Vf)
  • Where If is the Full Load Current (amps)
  • Pf is the full load power (watts) 
  • Vf is the full load voltage (volts) 

To calculate full load current, divide the full load power by the product of the full load voltage times 1.723.

How to Calculate Full Load Current?

The following two example problems outline how to calculate the Full Load Current.

Example Problem #1:

  1. First, determine the full load power (watts). In this example, the full load power (watts) is measured to be 67.
  2. Next, determine the full load voltage (volts). For this problem, the full load voltage (volts) is calculated to be 8.
  3. Finally, calculate the Full Load Current using the formula above: 

If = Pf/(1.732*Vf)

Inserting the values from above and solving the equation with the imputed values gives: 

If = 67/(1.732*8) = 4.83 (amps)

Example Problem #2: 

Using the same process as example problem 1, we first define the variables outlined by the formula. In this case, the values are:

full load power (watts) = 90

full load voltage (volts) = 4

Entering these values into the formula above gives : 

If = 90/(1.732*4) = 12.99 (amps)