Electrical Load Math Study Guide

Load-math questions are easier when connected load, demand load, real power, apparent power, voltage, current, phase, and power factor are kept as separate ideas until the problem establishes their relationship.

Use the units and the quantity being asked for to choose the calculation path before substituting numbers.

• Keep W and kW consistent.
• Keep VA and kVA consistent.
• Separate real power from apparent power.
• Confirm the phase before choosing a formula.
• Use Code-dependent demand information only from the problem or verified reference material.