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Motor Full-Load Current Estimator
Estimate three-phase motor current from HP, efficiency, and PF.
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Battery storage calculators
Battery sizing, backup runtime, payback, plus solar, rates, circuits, and load, each with visible math.
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Transformer Sizing Calculator
Full-load current for single- and three-phase transformers.
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Fault Current Calculator
Infinite-bus available fault current at transformer secondaries.
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Conduit Bending Calculator
Offset travel, run, and multiplier for common bend angles.
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Voltage Drop Calculator
Price voltage drop for single- and three-phase runs.
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Conduit Fill Calculator
Check raceway fill percent against NEC Chapter 9 limits.
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Breaker Size Calculator
Step load current up to the next standard breaker size.
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Power Factor Penalty Calculator
Price low power factor demand penalties and correction.
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Average Bill Benchmark
Compare your electric bill against the US average bill.
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Heat Pump vs Gas Furnace Calculator
Compare annual heating cost for a heat pump against a gas furnace.
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