Power System Calculators

Calculate Voltage (V), Current (I), Resistance (R), and Power (P) in Watts, VA, and VARs - the foundation of all electrical work.

Comprehensive arc flash analysis including IEEE 1584-2018 incident energy calculations, NFPA 70E hazard category determination, and PPE selection requirements.

Comprehensive wire and cable calculations including sizing (ampacity + voltage drop), ampacity with derating, voltage drop analysis, and conduit fill per NEC requirements.

Comprehensive motor calculations including current (FLA), speed, torque, efficiency, power factor, starting methods, NEC full-load current lookup tables, and complete motor branch circuit design per NEC Article 430.

Comprehensive protection system analysis including OCPD sizing per NEC 240, device coordination analysis, and relay settings calculations for complete electrical protection design.

Comprehensive transformer calculations including sizing from load, current calculations, kVA selection, and fault current analysis with NEC protection requirements.

Calculate ground grid parameters and touch/step potentials for substation and industrial applications.

Improve electrical efficiency and reduce electricity costs. Determine the required size of capacitor banks to correct poor power factor, analyzing reactive power and recommending appropriate kVAR ratings.

Comprehensive renewable energy system design including solar PV array sizing with NEC 690 compliance, battery storage capacity calculations with DOD/autonomy, and detailed load analysis for daily/annual energy consumption.

Comprehensive circuit analysis including resistance combinations (series/parallel), complex impedance calculations (Z=R+jX), series/parallel impedance networks, and power relationships (real, reactive, apparent).

Calculate complete electrical service requirements for dwelling units. Determine main protection ratings, service conductor sizing, grounding specifications, and raceway dimensions based on total residential loads.

Comprehensive generator calculations including load current output and fault current contributions (subtransient, transient, steady-state) for protection coordination.

Size battery systems for backup power applications. Calculate amp-hour requirements, number of cells, and battery string configuration based on load profile and autonomy requirements.

Comprehensive three-phase system analysis including power calculations (kW, kVA, kVAR), full load current for motors and transformers, and voltage/current imbalance evaluation per NEMA MG-1 standards.

Visual conduit bending tool for offsets, saddles, and 90° bends with step-by-step measurements and take-up calculations.