Neutral Current Calculator

Formula

The formula to calculate the Neutral Current (In) is:

\[ In = \sqrt{A^2 + B^2 + C^2 - A \cdot B - A \cdot C - B \cdot C} \]

Where:

\( In \) is the neutral current (amps).
\( A \) is the phase A current (amps).
\( B \) is the phase B current (amps).
\( C \) is the phase C current (amps).

What is Neutral Current?

The neutral current is the current that flows through the neutral wire in a three-phase electrical system. It is calculated based on the currents in the three phases (A, B, and C). This calculation is important for ensuring the safety and efficiency of electrical systems.

Example Calculation

Consider an example where:

Phase A Current (A): 10 amps
Phase B Current (B): 15 amps
Phase C Current (C): 20 amps

Using the formula to calculate the Neutral Current:

\[ In = \sqrt{10^2 + 15^2 + 20^2 - 10 \cdot 15 - 10 \cdot 20 - 15 \cdot 20} = \sqrt{100 + 225 + 400 - 150 - 200 - 300} = \sqrt{75} \approx 8.66 \text{ amps} \]

This means that the neutral current for this example is approximately 8.66 amps.