# Voltage Drop Pro - Electrician — NEC Voltage Drop Calculator

> NEC Voltage Drop Calculator (iPhone/iPad app by BRUCE RAY MCCAMPBELL.)

- Source: https://appshunter.io/ios/app/voltage-drop-pro-electrician/id6781791471 (this page in markdown: same URL + `.md`)
- Developer: [BRUCE RAY MCCAMPBELL](https://appshunter.io/developer/6772438648)
- Category: Utilities, Business
- Price: Free with in-app purchases (on sale, was $2.99)
- Age rating: 4+
- Requires: iOS 15.1 · 49 MB
- Languages: American English
- Released: 2026-06-30
- Data updated: 2026-08-14
- User reviews in markdown: https://appshunter.io/ios/app/voltage-drop-pro-electrician/id6781791471/reviews.md

## What is Voltage Drop Pro?

Voltage Drop Pro calculates voltage drop per NEC 2023 Article 210.19 and 215.2 — the code sections that determine if your conductor run keeps voltage drop within acceptable limits.

Works offline. No subscription. One-time purchase.

WHAT IT CALCULATES
- Branch circuits (210.19) and feeders (215.2)
- Copper (K=10.4) and aluminum (K=17.0) conductors at 75°C
- All wire sizes — 14 AWG through 500 kcmil
- System voltages from 120V to 480V

VERDICTS BACKED BY CODE
Compares your voltage drop percentage against the NEC-recommended 3% branch/feeder max and 5% combined max. Get an instant PASS or FAIL — with the actual voltage drop, margin, and wire data shown.

BUILT FOR THE FIELD
No ads. No cloud. No account required. Designed for electricians who need the answer in seconds, not after a signup flow.

PART OF THE FIELDMETRIC SUITE
Also available: Box Fill Pro (NEC box fill) and Conduit Fill Pro (NEC conduit fill calculations).

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Voltage Drop Pro | $2.99 | one-time |



## Version history (last 1 release)

### 1.0.0 — 2026-06-30

No release notes.

## More apps by BRUCE RAY MCCAMPBELL

- [Conduit Fill Pro - Electrician](https://appshunter.io/ios/app/conduit-fill-pro-electrician/id6772438646)
- [Spray Foam Pro-Insulation Calc](https://appshunter.io/ios/app/spray-foam-pro-insulation-calc/id6772439649)
- [Drain Slope Pro - Plumber](https://appshunter.io/ios/app/drain-slope-pro-plumber/id6772439957)
- [Box Fill Pro - Electrician](https://appshunter.io/ios/app/box-fill-pro-electrician/id6780626078)

All apps by BRUCE RAY MCCAMPBELL: https://appshunter.io/developer/6772438648

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-14.*