Three-Phase Power System Load Calculations
5:17
Three-phase load calculations use the same Article 220 process — until the last step, where one extra number shows up.
In this lesson: the VA = 1.732 × V × I formula, three worked examples (480V, 208V), phase balancing and why total VA alone doesn't tell the whole story, wye vs. delta systems, the high-leg delta trap, how balance affects neutral current, and power factor in real-world motor loads.
Based on the 2023 NEC (Article 220).
