AC Voltage Drop Calculator
Estimates single- or three-phase voltage drop using user-supplied conductor impedance per 1,000 ft.
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Cable Tray Fill Area Calculator
Calculates geometric cable area occupancy from areas entered by the user, without applying NEC cable-tray installation rules.
Open calculatorCapacitor Bank Current Calculator
Calculates line current from a known capacitor-bank kVAR rating, voltage, and phase count. Use manufacturer nameplate data and verify switching and harmonic conditions separately.
Open calculatorConductor Ampacity Adjustment Calculator
Applies user-supplied correction and adjustment factors to a selected conductor ampacity value.
Open calculatorConductor Resistive Loss and Energy Cost Calculator
Estimates resistive I-squared-R energy loss and annual energy cost for a steady current and user-supplied conductor resistance. It excludes reactance, load variation, harmonics, temperature...
Open calculatorConduit Fill Area Calculator
Calculates area occupancy from user-entered raceway and aggregate conductor areas; no NEC fill table or allowable fill rule is embedded.
Open calculatorControl Transformer Load Estimate
Estimates required apparent power from user-entered simultaneous steady and pickup VA loads plus an explicit margin; it does not select a standard transformer rating.
Open calculatorDemand Factor & Load Factor Calculator
Computes demand factor, load factor, and average-to-connected utilization from user-entered facility values. Flags inconsistent input relationships without inferring NEC demand allowances.
Open calculatorDistribution Panel Load, Headroom, and Phase Balance Estimate
Summarizes measured phase currents against separately entered panel bus and main overcurrent-device ratings. It also estimates phase balance and a maximum-phase equivalent kVA. This...
Open calculatorEquipment Grounding Conductor Table Value Check
Compares a selected conductor area with a minimum area entered from a verified applicable source table; it does not select the code table value.
Open calculatorGenerator Capacity After Manufacturer Derating
Applies a manufacturer-provided usable-capacity factor to a generator nameplate rating. No generic altitude or temperature correction is assumed; obtain the factor for the exact...
Open calculatorIndustrial DC Power Supply Capacity Screening
Applies a user-selected allowance to the simultaneous DC load current. Verify inrush, ambient derating, redundancy, short-circuit behavior, and manufacturer conditions before selecting a supply.
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