The amount of current flow in a neutral conductor will be the sum of the unbalanced load between lines L2 and L3, with the addition of the current flow in the high leg, L1. To determine the amount of neutral current, use the formula ____.
A) AN = A1 + (A2 x A3)
B) AN = A1(A2 - A3)
C) AN = A1 + (A2 - A3)
D) AN = A1(A2 + A3)

Question

Quizplus · Accepted Answer

The formula for determining the amount of neutral current is AN = A1 + (A2 - A3). This takes into account the unbalanced load between lines L2 and L3, as well as the current flow in the high leg, L1. Option A is incorrect because it multiplies A2 and A3 instead of subtracting them. Option B is not the correct formula for determining neutral current. Option D only multiplies A1 by the sum of A2 and A3, which does not take into account the unbalanced load between L2 and L3.

The Amount of Current Flow in a Neutral Conductor Will