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Calculators

Load & Power calculators

Load and power: single and three-phase power, kVA, power factor, and panel load summaries.

Calculator

Control Transformer VA Sizer

Control power transformer VA per NEC 450: inrush plus sealed burden stepped to a standard CPT size. 5 inputs, 4 outputs with grouped results.

Outputs: Required VA · Standard CPT size · Primary current

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Calculator

Harmonic Neutral Sizer

Neutral ampacity for nonlinear loads with the 200% neutral call. 3 inputs, 3 outputs with grouped results.

Outputs: Calculated neutral current · Required neutral ampacity · Use 200% neutral (1=yes)

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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

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

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

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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Calculator

Three-Phase Power Calculator

Power, current, kVA, PF and efficiency-corrected sizing current for three-phase systems. 5 inputs, 6 outputs with grouped results.

Outputs: Real power · Apparent power · Current from known kW

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