Audit one documented series circuit path from source-labelled segment currents, lengths, path multipliers and effective impedances—without assuming copper, choosing wire size or applying a pass/fail threshold.
Choose your path
Reproduce one source-labelled series circuit path from independently documented segment currents, lengths, path multipliers and effective impedances without choosing a conductor or allowable drop.
Reproduce feeder and branch portions without forcing one current, one conductor or a universal 2x path across the whole route.
Name the circuit and impedance sources, copy up to three complete segments and inspect each drop plus the total.
Can trace the path while conductor selection and acceptable performance remain in the complete design.
See whether every segment current, length, multiplier and impedance matches the submitted calculation.
Inspect the wrapping source/model cards, paired units, segment steps, total percentage and load-side arithmetic.
No fixed copper table, 3% pass/fail or larger-wire recommendation is generated.
Learn why series segments can have different current and path/phase models and cannot be flattened into one generic AWG row.
Run separate foot and metric education records with explicit impedance values and compare the exposed sum.
Can reproduce the arithmetic and list material, ampacity, protection, equipment and approval checks the tool omits.
Outputs and checklists are planning aids. Review the linked current authorities and the records, terms, instructions, and requirements that apply to your exact situation before a consequential decision.
Tools you might need next
Audit voltage-drop arithmetic for one source-selected candidate conductor using documented impedance, path and units—without selecting AWG, ampacity, an allowable drop or code compliance.
Reproduce one source-labelled electrical load schedule from connected volt-amperes and explicitly copied line multipliers—without choosing code factors or sizing a service, feeder, conductor or breaker.
Calculate DC path drop or approximate single-phase and balanced three-phase AC drop using actual conductor data, circuit current and a chosen limit.
The responsible calculation owns segment boundaries and currents. Do not flatten feeder, branch or other portions into one current and one conductor when the reviewed model treats them separately.
Path record = source voltage + one to three documented series segmentsEvery path multiplier and effective resistance/impedance comes from the named source. The tool never assumes 2×, copper, AWG, temperature, phase or AC/DC conditions.
Segment drop = current × one-way length × entered path multiplier × entered impedance ÷ 1,000The percentage and load-side arithmetic reproduce the entered model only. No 3% or 5% threshold, equipment minimum voltage, larger-wire recommendation, ampacity result or compliance decision is inferred.
Total drop = Σ segment drops; percent = total drop ÷ entered source voltage × 100Updated: August 2026
A reviewer copies separate segment currents, lengths, path multipliers and impedances from a submitted path. The ledger exposes both drops and their sum without choosing either conductor.
An engineer uses metres with ohms per kilometre and an explicitly documented phase/path multiplier. Paired units prevent silently mixing feet with metric impedance data.
An apprentice runs separate source-labelled records to see how segment assumptions change arithmetic. The result never grades the percentage or recommends a wire size.
Reproduce the arithmetic in one reviewed circuit path. Name the segment-model and impedance sources, choose one paired foot or metric unit system, and enter up to three complete series segments. Each segment keeps its own current, one-way length, path multiplier and effective impedance; final conductor and acceptable-performance decisions remain outside the tool.