# NEC Electrical Load Calculator — Panel, Service & Wire Sizing

> Electrical load calculation tool for electricians based on NEC 2023. (iPhone/iPad app by V PUGAZHENTHI.)

- Source: https://appshunter.io/ios/app/nec-electrical-load-calculator/id6785889421 (this page in markdown: same URL + `.md`)
- Developer: [V PUGAZHENTHI](https://appshunter.io/developer/491898049)
- Category: Utilities, Reference
- Price: Free with in-app purchases
- Rating: 5.00/5 from 3 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.6 · 12 MB
- Languages: American English, Mexican Spanish
- Released: 2026-07-07
- Data updated: 2026-11-13
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/nec-electrical-load-calculator/id6785889421/reviews.md

## What is NEC Electrical Load Calculator?

NEC Load Calculator sizes services, feeders, motors, branch circuits, panels and cable tray using the 2023 NEC — and every result shows the article citation, the demand factor table used, and the step-by-step math. Export any calculation as a PDF for permit submission.

Built for electricians, electrical contractors, engineers and inspectors who need an answer they can check against the code book — not just a final number.

WHAT YOU CAN CALCULATE

• Residential service size — dwelling unit load calculation, standard method (NEC 220.40–220.55) and optional method (220.82). General lighting, small appliance and laundry circuits, fixed appliances, dryer, ranges and cooking equipment, HVAC, with 230.79(C) service minimums.

• Commercial feeder and service — NEC 220.12, 220.44, 220.60 and 430.24. Lighting, receptacles, motors, HVAC units, sign circuits and demand factors.

• Branch circuit wire and breaker size — conductor and OCPD sizing per NEC 210.19, 310.12 and 310.15(B)(1)(a). Continuous loads, conduit fill derating and ambient temperature correction, 120V through 480V.

• Motor circuits — conductor, overload and OCPD sizing per NEC 430.22, 430.32 and 430.52, with full motor table lookups by horsepower, voltage and phase.

• Panel schedule — circuit-by-circuit panel editor with phase balance, loading percentage and imbalance per NEC 220.40 and 220.87.

• Cable tray — tray fill and ampacity derating per NEC 392.22(A) and 392.80(A). Ventilated trough and solid-bottom trays, small-cable fill-area limits and the 90% width rule for large cables.

PANEL LAYOUT FROM YOUR LOAD CALC
Turn a load calculation into a panel layout: circuit numbers, breaker sizes, two-pole spans and spare spaces, arranged the way a real panelboard is wired. Then fine-tune labels, phase assignment or breaker sizes in the Panel Schedule editor.

SHOW YOUR WORK
Every result lists the NEC article, the demand table and each step of the math, so you can verify it, explain it to an inspector or teach it to an apprentice.

PDF REPORTS
Export any result as a PDF for permits, job files or client records.

INTERNATIONAL VOLTAGES
Supports 220/127V and 440/254V systems (including 127V, 220V, 254V and 440V circuits) alongside standard US voltages, with a reminder to verify against NOM-001-SEDE in Mexico.

IPHONE, IPHONE DUO AND IPAD
Full-width layouts on iPad and the unfolded iPhone Duo, in any orientation.

FREE AND PRO
Residential and Branch Circuit calculations are free. A one-time Pro purchase unlocks Commercial, Motor, Panel Schedule, Cable Tray and PDF export. No subscription.

## Key features

- NEC 2023 load calculations
- Residential, commercial, motor, branch circuit modules
- Panel schedule editor
- Step-by-step calculation results
- Panel layout generation
- PDF export

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| NEC LOAD PRO | $9.99 | one-time |


## Is NEC Electrical Load Calculator safe?

Not enough ratings yet to assess NEC Electrical Load Calculator.

## Is NEC Electrical Load Calculator legit?

NEC Electrical Load Calculator appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for NEC Electrical Load Calculator is 75 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/nec-electrical-load-calculator/id6785889421/reviews.md

### 5/5 — Must have app for every electrician

*2026-08-12*

As an electrician, this is a go to app for all my daily wiring needs . Makes my job so easy with clear instructions

**Developer response:** Happy to hear 😎

### 5/5 — Solid

*2026-07-30*

Overall good app. Simple, easy to use, cant really ask for more. App dev is good at listening to feedback for any corrections or advice.

**Developer response:** Happy to hear 😎

## Frequently asked questions about NEC Electrical Load Calculator

### What electrical codes does NEC Load Calculator use?

NEC Load Calculator performs load calculations based on the NEC 2023 code. It includes specific modules for residential, commercial, motor, and branch circuit work, referencing relevant NEC articles for each calculation.

### Is NEC Load Calculator suitable for students?

No, NEC Load Calculator is specifically built for licensed electricians and contractors. It is not intended for students, focusing on professional-level calculations and code references.

### Can I export my calculations from NEC Load Calculator?

Yes, NEC Load Calculator allows you to export any result as a PDF report. This is useful for permit submissions, job documentation, or client records.

### How does NEC Load Calculator handle panel schedules?

The app features a panel schedule editor that allows circuit-by-circuit input. It performs phase balance, loading percentage, and imbalance calculations, and can generate a panel layout directly from a load calculation.

### Does NEC Load Calculator show the math behind the results?

Yes, every result displayed by NEC Load Calculator includes the NEC article reference, the demand factor table used, and the step-by-step math. This transparency allows users to check their work against the code book.

### What devices is NEC Load Calculator available on?

NEC Load Calculator is available on iPhone and iPad devices. It is designed to run on these Apple platforms.

### How often is NEC Load Calculator updated?

The latest version of NEC Load Calculator is 1.1, last updated on August 4, 2026. The app was initially released on July 7, 2026.

### What is the user rating for NEC Load Calculator?

NEC Load Calculator has a high user rating of 5.0 stars, based on 1 rating. This indicates a very positive reception from its users.

## Version history (last 5 releases)

### 1.6 — 2026-11-11

• iPhone Duo support: full-width layouts and all four orientations on the unfolded display.
• Corrected the NEC Table 220.54 demand factors for 5 or more electric dryers in the Residential calculator, with exact percentages (e.g. 34.5%) on results and PDF reports.

### 1.5 — 2026-10-03

Quick update to Fix Motor PDF text overlap

### 1.4 — 2026-10-02

• Fixed a blank Share sheet when exporting PDFs

### 1.3 — 2026-09-24

Added Cable Tray solid-bottom support and Mexican voltage systems
(127/220V, 254/440V) across Commercial, Panel Schedule, and Branch Circuit.

### 1.2 — 2026-08-31

New: Projects. Group your calculations by job — create a project, save Residential, Commercial, Motor, Branch Circuit, and Panel Schedule results into it, and export a combined PDF report for the whole job.

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All apps by V PUGAZHENTHI: https://appshunter.io/developer/491898049

## Related topics

[electrical load calculator](https://appshunter.io/ios/topics/electrical-load-calculator)

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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 2026-11-13.*