Enter the total line current (amps) into the calculator to determine the Phase Current.

## Phase Current From Line Current Formula

The following formula is used to calculate the Phase Current.

Ip = IL / SQRT(3)

• Where Ip is the Phase Current (amps)
• IL is the total line current (amps)

## How to Calculate Phase Current From Line Current?

The following two example problems outline how to calculate the Phase Current from line current.

Example Problem #1:

1. First, determine the total line current (amps). In this example, the total line current (amps) is measured to be 61.
2. Finally, calculate the Phase Current using the formula above:

Ip = IL / SQRT(3)

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

Ip = 61 / SQRT(3) = 35.21 (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:

total line current (amps) = 18

Entering these values into the formula above gives us::

Ip = IL / SQRT(3) = 10.39 (amps)