Auditing a panel, quoting a job, or documenting an installation? Enter every circuit once, read one verdict table, and export the whole thing to CSV for your records or spreadsheet.
Single-circuit calculators are fine until you have fourteen circuits to verify. This tool keeps the system voltage and material fixed while you list circuits — each computes independently, the worst offender is summarized under the table, and the CSV export drops straight into Excel or Sheets with every input and verdict preserved. Circuits at a different voltage (the lone 240 V run in a 120 V audit) are one toggle away — run them as a second pass and merge the CSVs.
Every row's circuit name, amps, one-way length, wire size, material, system voltage, computed drop in volts and percent, and the PASS/MARGINAL/FAIL verdict — ready for a job file or punch list.
The voltage applies to all rows in a pass, which matches how panels are audited. Toggle the system selector for the odd circuit out and export again — the CSVs concatenate cleanly.