Pull Box Sizer
Minimum length per NEC 314.28 for straight and angle pulls. 3 inputs, 1 output.
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Arc Flash Incident Energy Screening
First-pass incident energy and flash boundary from fault current, clearing time, and distance. 5 inputs, 3 outputs with grouped results.
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Cable Tray Fill Calculator
Tray fill per NEC 392: allowable area, cable area used, and the fill verdict. 5 inputs, 4 outputs with grouped results.
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Conduit Fill Calculator
NEC Chapter 9 fill with wire-area picker, conduit picker, derating hint and spare verdict. 4 inputs, 4 outputs with grouped results.
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Electrical Box Fill Calculator
NEC 314.16 fill from gauge-based allowance, conductors, devices, grounds, clamps, with verdict. 6 inputs, 4 outputs with grouped results.
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