# Electrical Load Calc NEC — NEC Art.220 Residential Load

> NEC residential electrical load calculator for service sizing. (iPhone/iPad app by Rizvan Adzhoian.)

- Source: https://appshunter.io/ios/app/electrical-load-calc-nec/id6763250945 (this page in markdown: same URL + `.md`)
- Developer: [Rizvan Adzhoian](https://appshunter.io/developer/1891746079)
- Category: Utilities, Business
- Price: $0.99 with in-app purchases
- Rating: 3.00/5 from 4 App Store ratings
- Age rating: 17+
- Requires: iOS 13.0 · 34 MB
- Languages: American English
- Released: 2026-04-24
- Data updated: 2026-08-15
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/electrical-load-calc-nec/id6763250945/reviews.md

## What is Electrical Load Calc NEC?

NEC residential electrical load calculator for electricians, contractors, and electrical engineers. Size electrical services with confidence using the NEC 220.82 Optional Method and updated NEC 2026 Article 120 demand factors. Works 100% offline on the job site.

Enter dwelling square footage, pick appliances from presets, and get a permit-ready service-size recommendation in seconds - with a full step-by-step breakdown and NEC article references on every line. Switch between NEC 2023 and NEC 2026 instantly to see how the new rules change your load.

LOAD CALCULATION FEATURES:
- NEC 220.82 Optional Method for dwelling units
- NEC 2026 Article 120 support (load calc sections renumbered 220.x to 120.x)
- Toggle between NEC 2023 and NEC 2026 in one tap
- Step-by-step breakdown with NEC article references per line
- Heating and A/C per 220.82(C): A/C and heat pump compressor at 100%, supplemental heat at 65%, electric space heating at 65% (under 4 units) or 40% (4 or more units)
- EVSE per edition: 2023 as general load per 220.57 and 220.82(B) with 7,200 VA minimum; 2026 at 100% per 120.82(D)
- Service size from standard ratings: 100A, 125A, 150A, 200A, 225A, 300A, 400A, 600A
- PASS/FAIL check against existing panel capacity
- 29 common appliance presets with VA ratings
- Custom appliance entry for any load
- General lighting auto-calculated from square footage per 220.41
- Small appliance and laundry circuits added per 220.52
- HVAC non-coincident load handling (heating vs cooling)
- EV charger support (Level 2: 32A, 40A, 48A)

APPLIANCE PRESETS INCLUDED:
- Electric range and oven (8,000-16,000 VA)
- Clothes dryer (5,000-5,500 VA)
- Water heater (4,500 VA)
- Heat pump (2-5 ton) and central AC (2-5 ton)
- Supplemental heat strips (5 kW, 10 kW) for heat pump systems
- EV charger Level 2 (7,680-11,520 VA)
- Dishwasher, disposal, microwave
- Pool pump, hot tub, well pump
- And more - or enter custom VA values

PRO FEATURES (one-time purchase):
- No ads - clean interface for professionals
- Save calculation history by job or address
- Export permit-ready PDF with full load breakdown
- Dark theme support

NEC 2026 UPDATES COVERED:
- General lighting reduced to 2 VA/sq ft (was 3 VA/sq ft)
- First tier demand reduced to 8,000 VA (was 10,000 VA)
- EV chargers at 100% demand factor per 120.82(D)
- Article 220 relocated to Article 120 (220.82 is now 120.82)

HOW IT WORKS:
1. Enter dwelling square footage
2. Select NEC edition (2023 or 2026)
3. Add appliances from presets or custom entry
4. See total demand in amps with NEC article references
5. Get recommended service size instantly

NEC ARTICLE REFERENCES:
Every calculation line shows the exact NEC article reference (for example "NEC 220.82(B)" or "NEC 2026 120.82(D)"). Verify every step against the official NEC code book, build trust with inspectors, and prep for the electrical exam.

PERFECT FOR:
- Licensed electricians sizing residential services daily
- Electrical apprentices studying for journeyman exams
- Electrical contractors bidding residential and light commercial jobs
- Electrical engineers and designers
- Panel upgrade assessments
- EV charger installation planning
- New construction load calculations
- Permit applications and plan review

OFFLINE AND PRIVACY:
- Works 100% offline - no internet needed on the job site
- No account required
- No data collection - your calculations stay on your device
- Encrypted local storage for saved jobs

Simplify residential load calculations on the job site.

## Key features

- NEC 220.82 Optional Method calculations
- Support for NEC 2023 and NEC 2026
- Step-by-step breakdown with article references
- Appliance presets and custom entry
- Service size recommendations
- PASS/FAIL check against panel capacity

## Pricing and in-app purchases

Base price: $0.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro Unlock | $2.99 | one-time |


## Chart rankings

- #199 in Top Paid · Utilities (US App Store)


## Frequently asked questions about Electrical Load Calc NEC

### What is Electrical Load Calc NEC?

Electrical Load Calc NEC is a utility app designed to help electricians and engineers calculate residential electrical service sizes according to National Electrical Code (NEC) standards. It provides detailed breakdowns and references specific NEC articles for each calculation.

### Does Electrical Load Calc NEC have ads?

Yes, Electrical Load Calc NEC contains advertisements. The pro features, available as a one-time purchase, remove ads for a cleaner interface.

### What NEC editions does Electrical Load Calc NEC support?

Electrical Load Calc NEC supports both NEC 2023 and the updated NEC 2026 editions. Users can instantly toggle between these editions to see how new rules affect load calculations.

### How does Electrical Load Calc NEC calculate loads?

The app calculates loads by taking into account dwelling square footage, appliance presets, custom load entries, and specific NEC rules for lighting, small appliances, laundry circuits, HVAC, and EV chargers.

### Can I save my calculations with Electrical Load Calc NEC?

Saving calculation history by job or address is a pro feature. This functionality is available with the one-time purchase of the pro version of the app.

### What is the price of Electrical Load Calc NEC?

The base version of Electrical Load Calc NEC is free. There is a one-time purchase option for pro features, which includes ad removal and history saving.

### How often is Electrical Load Calc NEC updated?

Electrical Load Calc NEC was last updated on June 12, 2026, with version 1.1.9. This indicates a relatively recent update, suggesting ongoing development and support for the app.

### What devices is Electrical Load Calc NEC available on?

Electrical Load Calc NEC is available for iPhone, iPad, and iPod devices. It is designed for users within the Apple ecosystem.

## Version history (last 5 releases)

### 1.1.9 — 2026-06-12

NEC accuracy update:
• Heating/AC per 220.82(C): heat pump 100% + supplemental 65%; space heating 65% (under 4 units) or 40% (4+)
• NEC 2026 references corrected to relocated Article 120 numbering (120.82, 120.41, 120.52)
• EVSE: 2023 general load per 220.57/220.82(B), 7,200 VA min; 2026 at 100% per 120.82(D)
• Service sizes now include 125A, 150A, 225A, 300A, 600A
• Heat pump and heat strip presets (29 total)

Send feedback to support@tradetools.dev.

### 1.1.8 — 2026-05-17

Fixed PDF export for Pro users — large load calculations (multiple appliances, HVAC, EV chargers) now export reliably across multiple pages, and the share sheet opens correctly on every device. Tap Export PDF again if you couldn't before.

### 1.1.7 — 2026-04-29

What's new:
• Moved to tradetools.dev — new umbrella site for all our trade calculators
• Updated support email: support@tradetools.dev
• Refreshed privacy & support pages with unified design
• Bug fixes and stability improvements

Thanks for using ElecTools! Send feedback to support@tradetools.dev.

### 1.1.6 — 2026-04-27

Privacy & ad consent update:

- Updated ad consent flow to comply with Google AdMob's latest privacy requirements
- Added "Manage Ad Privacy" option in Settings so users in the EU and UK can review or change their consent at any time
- Improved ad initialization stability and App Tracking Transparency handling
- Minor performance and reliability fixes

### 1.1.5 — 2026-04-25

Cross-promotion improvements: links to other Electools apps now open in App Store on iOS instead of Google Play.

Bug fixes and stability improvements.

## More apps by Rizvan Adzhoian

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- [Voltage Drop Calc NEC](https://appshunter.io/ios/app/voltage-drop-calc-nec/id6763312448)
- [Grounding Size Calc NEC](https://appshunter.io/ios/app/grounding-size-calc-nec/id6763312724)
- [Breaker Size Calc NEC](https://appshunter.io/ios/app/breaker-size-calc-nec/id6763312865)

All apps by Rizvan Adzhoian: https://appshunter.io/developer/1891746079

## 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 2026-08-15.*