Electrical Calculators
Our electrical calculators support licensed electricians and planners with NEC-aligned tools for wire sizing, voltage drop, conduit fill, ampacity, and load analysis. They make code-compliant calculations fast so you can design and inspect electrical systems safely.
Arc Flash PPE Selector (IEEE 1584-2018)
Calculate incident energy and determine required PPE category per IEEE 1584-2018 and NFPA 70E standards.
Electrical Bid Estimator & Material Takeoff
Estimate electrical project costs with NECA labor units, material takeoff, overhead, and profit margin calculations.
EV Charging Infrastructure Load Planner
Plan EV charging infrastructure with NEC 625.42 diversity factors, service sizing, and compliance verification.
Generator Sizing with Motor Starting
Size standby and prime generators with motor starting transient analysis, altitude/temperature derating, and fuel consumption estimates.
NEC Cable Ampacity Calculator
Calculate wire ampacity with NEC Table 310.16/310.17 base values and all derating factors including temperature, conduit fill, rooftop proximity, and continuous load.
Panel Schedule Builder
Build interactive panel schedules with per-phase load balancing, imbalance detection, and circuit directory generation.
Short Circuit / Fault Current Calculator
Calculate available fault current at any point using the point-to-point method per IEEE 141, with cable impedance and motor contribution analysis.
Solar Panel Output Calculator
Estimate daily, monthly, and annual energy yield (kWh) from a solar panel system.
Solar String Sizing Calculator
Calculate optimal solar panel string lengths with temperature-corrected voltage analysis for inverter MPPT compatibility.
Wind Turbine Power Calculator
Estimate wind turbine power output and annual energy from rotor size, wind speed, and Cp.