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Buck-Boost Transformer Sizer
Booster kVA from load current times correction volts. 3 inputs, 3 outputs.
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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.
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Fire Pump Feeder Sizer
125% conductors with locked-rotor-rated OCPD per NEC 695. 3 inputs, 3 outputs.
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Separately Derived System Bonding Calculator
SDS bonding jumper per 250.30(A)(1) via Table 250.66. 1 input, 1 output.
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Point-to-Point Fault Current Calculator
Available Isc at a panel by the M-multiplier method. 4 inputs, 3 outputs.
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Motor kW to HP Converter
kW to HP and back at 0.746. 2 inputs, 2 outputs.
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Wire Gauge Converter
AWG/kcmil to mm2 and cmil per Chapter 9 Table 8. 1 input, 2 outputs.
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Electrical Unit Converter
Volts, amps, watts, VA, ohms from V, A, PF. 3 inputs, 3 outputs.
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Fire Alarm Battery Sizer
Standby plus alarm capacity per NFPA 72 with 20% margin. 4 inputs, 2 outputs.
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Lighting Lumen Method Calculator
Fixture count from foot-candles, area, CU, and light-loss factor. 6 inputs, 2 outputs.
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Voltage Unbalance Calculator
Percent unbalance per NEMA MG-1 with motor-derate flag. 3 inputs, 2 outputs.
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