# TrueMotor — Motor calcs, done right

> Motor calcs, done right (iPhone/iPad app by Nicole Nalley.)

- Source: https://appshunter.io/ios/app/truemotor/id6772608589 (this page in markdown: same URL + `.md`)
- Developer: [Nicole Nalley](https://appshunter.io/developer/1894562817)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 2 MB
- Languages: American English
- Released: 2026-07-20
- Data updated: 2026-07-24
- User reviews in markdown: https://appshunter.io/ios/app/truemotor/id6772608589/reviews.md

## What is TrueMotor?

TrueMotor is a focused NEC Article 430 motor-calculation app for working US electricians — the clean, correct tool for the branch-circuit math people get wrong by hand. Pick the motor, get the answer in seconds, and see exactly how it was calculated.

THE SINGLE-MOTOR BRANCH CIRCUIT — FREE
• Full-load current from NEC Table 430.250 (three-phase) and 430.248 (single-phase), by horsepower and voltage — the table value, used per 430.6(A), not the nameplate.
• Branch conductor sized to 125% of FLC (430.22) against NEC 310.16 ampacity, copper or aluminum, 60/75/90 °C termination column.
• Branch overcurrent device — the 430.52(C)(1) maximum by device type (non-time-delay fuse, dual-element fuse, inverse-time breaker, instantaneous-trip breaker), rounded to the next standard 240.6 size.
• Overload from the nameplate FLA (430.32) — 125% or 115% by service factor and temperature rise.

MULTI-MOTOR FEEDER — TRUEMOTOR PRO
• Feeder conductor — 125% of the largest motor's FLC plus the sum of the rest (430.24).
• Feeder OCPD — the largest branch device plus the other motors' FLCs (430.62).
• An editable motor group — add and remove motors, each with its own branch result feeding the feeder.

SHOW YOUR WORK — every result expands to reveal the NEC table row, the multiplier or factor, the formula, and the exact code section. Nothing is hidden.

NEVER RECOMMENDS AN ILLEGAL PAIRING — TrueMotor cross-checks conductor ampacity (310.16) and standard device sizes (240.6) and warns, in plain language, if something doesn't line up.

BUILT FOR THE FIELD — light and dark themes, Universal iPhone and iPad layout, and calculations saved locally on your device.

TrueMotor is a calculation aid for qualified professionals. It does not replace code review, engineering judgment, the equipment listing, or the authority having jurisdiction.

From 509 Electric — the same team behind TrueBend, TruePhase, TrueFault, TrueRate, and TrueDrop.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| TrueMotor Pro Unlock | $4.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-07-21

No release notes.

## More apps by Nicole Nalley

- [TruePhase](https://appshunter.io/ios/app/truephase/id6771228149)
- [TrueFault: Fault Current Calc](https://appshunter.io/ios/app/truefault-fault-current-calc/id6772432318)
- [TrueOhm](https://appshunter.io/ios/app/trueohm/id6772605137)
- [TrueFill: Conduit Fill](https://appshunter.io/ios/app/truefill-conduit-fill/id6772631228)
- [TrueLine: One-Line Diagram](https://appshunter.io/ios/app/trueline-one-line-diagram/id6773567376)

All apps by Nicole Nalley: https://appshunter.io/developer/1894562817

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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 2026-07-24.*