Calculator

Voltage drop across every circuit

See voltage drop from the utility to the last load in your system. Not one circuit at a time — the entire model, updated live as you design.

What you get

System-wide analysis

Voltage drop calculated for every cable, from the service entrance to the farthest load.

Integrated with load flow

Not a standalone calculator — voltage drop is part of the full power flow analysis.

Threshold flagging

Set your acceptable voltage drop limits. ekx flags any circuit that exceeds them.

Cumulative drop visibility

See the total voltage drop path from source to any load, not just individual cable segments.

Live updates

Change cable length, load, or conductor size and see voltage drop update immediately.

NEC recommendations

Standard voltage drop recommendations (3% branch, 5% total) built into the analysis.

Voltage drop as part of your design workflow

Standalone voltage drop calculators require manual data entry for every circuit. ekx calculates voltage drop across your entire system as a natural part of the load flow analysis.

  • Every cable in the model has voltage drop calculated automatically
  • Total path voltage drop visible from source to any load
  • Circuits exceeding your limits are flagged visually on the diagram
  • Change any parameter and voltage drop recalculates instantly

Start free. Upgrade when you need more.

Free tier includes 1 project with up to 2 buses. Paid plans start at $27/month for consultants and $149/month for unlimited access.

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Frequently asked questions

Is this just a single-circuit calculator?

No. ekx calculates voltage drop across your entire electrical system as part of the load flow analysis. You see drop for every cable, plus cumulative drop from source to load.

What voltage drop limits does it use?

NEC recommends 3% for branch circuits and 5% total from source to load. You can configure your own thresholds.

Does it account for power factor?

Yes. Voltage drop calculations include power factor as part of the full load flow analysis.

Can I use it without building a full model?

The voltage drop calculation is integrated with the one-line diagram. Build even a simple circuit and voltage drop calculates automatically.

See voltage drop across your entire system.

System-wide voltage drop analysis, live as you design.

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