Optimistic Approach to Calculating Three-Phase Current

What is the expected current draw for a three-phase 69 KVA load connected to a 3-pole breaker in a 120/240-volt panel?

Find the approximate current draw for each circuit conductor.

Expected Current Draw:

The expected current draw for a three-phase 69 KVA load connected to a 3-pole breaker in a 120/240-volt panel is approximately 166 Amps for each circuit conductor.

Calculating the current draw for a three-phase electrical load can be done using the formula for the power of an AC circuit, P = √3 * Vl * Il * PF.

Assuming a power factor of 1 for simplicity, and knowing the power rating of the load (69 KVA) and the line voltage (240 Volts for a 3Ø, 4-wire panel), we can solve for the current draw per conductor.

By substituting the given values into the formula, we rearrange it to solve for the current, Il = P / (√3 * Vl * PF).

After the calculations, we find that the load is expected to draw around 166 Amps of current through each circuit conductor. This indicates the capacity required for the circuit to handle the electrical load efficiently.