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Electrical calculators

Load and power, wire and voltage drop, motors and protection, 24V control power, heat, lighting, backup, and raceway, each with visible math.

Calculator

Motor Full-Load Current Calculator

Estimate FLA from HP, efficiency and PF, cross-checked against the NEC Table 430.250 dataset. 4 inputs, 5 outputs with grouped results.

Outputs: Estimated full-load current · NEC 430.250 table FLA · Estimate vs table

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Calculator

Max Wire Length Solver

Back-solve allowable one-way length from drop budget, with gauge picker and feet+meters results. 7 inputs, 3 outputs with grouped results.

Outputs: Allowed volts · Max one-way length · Same in meters

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Calculator

Three-Phase Voltage Drop Calculator

NEC Chapter 9 three-phase drop with gauge picker, PF-aware reactance and limit verdict. 9 inputs, 5 outputs with grouped results.

Outputs: Voltage drop · Drop percent · Voltage at load

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Calculator

DC Voltage Drop Calculator

NEC Table 8 resistance drop for 24V DC control runs with gauge picker, material and limit verdict. 9 inputs, 5 outputs with grouped results.

Outputs: Voltage drop · Drop percent · Voltage at load

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Calculator

Power Factor Correction Calculator

Billed demand, monthly and payback-weighted penalty, capacitor bank kVAR with standard step rounding. 5 inputs, 6 outputs with grouped results.

Outputs: Apparent power · Billed demand · Monthly penalty

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Calculator

Panel Load Summary

Sum up to five load groups with demand factor into feeder amps, kVA and standard main size. 9 inputs, 6 outputs with grouped results.

Outputs: Connected load · Demand load · Demand kVA

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Calculator

kW kVA Power Factor Converter

Convert kW, kVA, PF both ways; capacitor kVAR to reach target PF; annual demand-cost of low PF. 4 inputs, 5 outputs with grouped results.

Outputs: Real power · Reactive power · Capacitor to target PF

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Calculator

Single-Phase Power Calculator

Volts, amps, watts, VA and continuous-load headroom for single-phase branch circuits. 5 inputs, 4 outputs with grouped results.

Outputs: Real power · Apparent power · Energy per day

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