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Electrical Power & Control Panel Calculators

Forty NEC-based calculators that size power, wire, and protection as one system: load and power, voltage drop, motors and protection, 24V control power, heat, lighting, backup, and raceway. Every output labeled, every formula visible, every rule traceable to the NEC.

Method

Inputs in. Math shown.

01 · Inputs

Nameplate numbers first.

Metered kWh, tariff rates, wattage, hours. No hidden estimates.

02 · Math

Every output labeled.

Bill, rate, payback, demand. Each with its formula.

03 · Verify

Field-check before relying.

Tariff sheet, meter data, AHJ. Baselines are dated.

Calculators

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Calculator

24V Branch Circuit Planner

Branch current and fuse check per branch, total DC load, wire gauge adequacy and drop on the longest run. 6 inputs, 6 outputs with...

Outputs: Branch current · Total DC current · Total DC power

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Calculator

24V DC Power Budget (PLC Panel)

Six load groups with simultaneity, inrush allowance, headroom, standard PSU, AC input and 24V bus current. 9 inputs, 7 outputs with grouped results.

Outputs: Connected total · Simultaneous load · Sized with margins

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Calculator

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.

Outputs: Incident energy · Flash boundary · Planning PPE category

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Private Workspace

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