Power & Transformers

Calculate voltage drop across cables based on material, length, and current. Includes formulas and NEC-compliant tables for electrical engineering projects.

Calculate transformer kVA ratings for single-phase and three-phase systems. Includes formulas, step-by-step sizing guides, and practical application examples.

Calculate transformer percentage impedance (%Z), ohmic impedance, and fault current. Includes typical values, formulas, and step-by-step calculation guides.

Calculate current (Amps), real power (kW), and apparent power (kVA) for three-phase systems. Includes power triangle visualization, formulas, and key concepts.

Estimate battery runtime based on capacity, consumption, and depth of discharge (DoD). Includes an interactive discharge chart and real-world factors.