Using Real and Apparent Power: PF = 𝑃 𝑆 PF= S P ​ Where: 𝑃 P = Real Power (Watts, W) 𝑆 S = Apparent Power (Volt-Amperes, VA) For a 3-phase system: PF = 𝑃 3 × 𝑉 𝐿 × 𝐼 𝐿 PF= 3 ​ ×V L ​ ×I L ​ P ​ Where: 𝑃 P = Total real power (W) 𝑉 𝐿 V L ​ = Line-to-line voltage (V) 𝐼 𝐿 I L ​ = Line current (A) 🔹 Single-Phase Systems: PF = 𝑃 𝑉 × 𝐼 PF= V×I P Where: 𝑉 V = Voltage (V) 𝐼 I = Current (A)