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Feeder Conductor Comparison

Compare documented feeder ampacity and actual AC impedance, recalculate voltage drop for every conductor and identify when no candidate fits.

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Inputs that matter
Feeder design and operating conditions, Circuit arrangement, Required load ampacity (A), Planned protection (A), and 7 more
Output to expect
Feeder ampacity and drop comparison
  • Check the units and required inputs before comparing results.
  • Keep the assumptions with a copied result so you can reproduce the calculation later.
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Reference & details

How it works

Feeder ampacity and drop comparison

Compare actual documented conductor candidates against required ampacity, planned protection and estimated AC voltage drop. All candidates are recomputed using their own AC resistance and reactance. List candidates in your preferred order; the tool returns the first that meets the entered numeric limits.

Approximate ΔV = k × operating A × one-way km × (R × PF + X × sqrt(1 − PF²)); k = 2 or sqrt(3).

Updated: September 2026

Example Scenarios

Try the built-in example, then replace its source data with your actual documented values. Retain failed comparisons and unresolved decisions.

→ Candidate A — numeric candidate

FAQ

Compare actual documented conductor candidates against required ampacity, planned protection and estimated AC voltage drop. All candidates are recomputed using their own AC resistance and reactance. List candidates in your preferred order; the tool returns the first that meets the entered numeric limits.

Use the exact equipment, dimensions, current ratings, operating conditions and applicable requirements described in the selected mode. Unknown values are not replaced by a generic wire, device count or capacity. Illustrative examples are arithmetic examples, not an approved installation.

Save planning case keeps an explicit local history entry. Copy MD retains current inputs, source notes and interpretation; Download CSV exports the current result breakdown. Export a separate copy before changing devices or clearing browser storage.

About Feeder Conductor Comparison

Compare actual documented conductor candidates against required ampacity, planned protection and estimated AC voltage drop. All candidates are recomputed using their own AC resistance and reactance. List candidates in your preferred order; the tool returns the first that meets the entered numeric limits.