# Electrical System Designer — Residential Electrical Design

> Residential Electrical Design (iPhone/iPad app by Yuhsiu Lai.)

- Source: https://appshunter.io/ios/app/electrical-system-designer/id6778117719 (this page in markdown: same URL + `.md`)
- Developer: [Yuhsiu Lai](https://appshunter.io/developer/433114647)
- Category: Utilities, Productivity
- Price: $2.99 (on sale, was $9.99)
- Age rating: 4+
- Requires: iOS 18.0 · 6 MB
- Languages: American English
- Released: 2026-06-11
- Data updated: 2026-06-25
- User reviews in markdown: https://appshunter.io/ios/app/electrical-system-designer/id6778117719/reviews.md

## What is Electrical System Designer?

# Residential Electrical Distribution System Designer

Design complete residential electrical systems from service entrance to branch circuits with a guided wizard-driven workflow. Whether you're an electrical contractor, designer, engineer, inspector, apprentice, or homeowner, this app helps you create professional electrical distribution system designs and generate permit-ready documentation.

Simply answer a series of menu-driven questions and the app automatically performs calculations, sizes equipment, designs circuits, and generates a complete electrical design package.

## Key Features

### Residential Service Design

• Calculate dwelling unit electrical loads
• Design complete residential distribution systems
• Support single-family homes, duplexes, townhomes, condos, and ADUs
• Determine service entrance requirements
• Recommend appropriate service sizes

### Load Calculations

• Residential load calculations
• Connected and demand load calculations
• General lighting load calculations
• Appliance demand calculations
• HVAC load integration
• EV charger load calculations
• Continuous load adjustments

### Service & Panel Design

• Automatic service sizing
• Main panel sizing and configuration
• Subpanel design
• Feeder calculations
• Service equipment schedules
• Load balancing between phases

### Branch Circuit Design

• Room-by-room circuit design
• Automatic circuit assignments
• Dedicated appliance circuits
• Kitchen and laundry circuits
• AFCI requirements
• GFCI requirements
• Circuit schedules

### Conductor Sizing

• Service conductor sizing
• Feeder conductor sizing
• Branch circuit conductor sizing
• Copper and aluminum conductors
• Ampacity calculations
• Derating calculations

### Overcurrent Protection

• Main breaker selection
• Feeder breaker sizing
• Branch breaker sizing
• Coordination of protective devices

### Grounding & Bonding

• Grounding electrode system design
• Ground rod calculations
• UFER grounding support
• Bonding conductor sizing
• Grounding schedules

### Voltage Drop Analysis

• Service voltage drop calculations
• Feeder voltage drop calculations
• Branch circuit voltage drop calculations
• Conductor upsizing recommendations
• Design optimization

### Design Drawings

• Automatic one-line diagrams
• Service entrance diagrams
• Panelboard layouts
• Distribution system drawings
• Grounding diagrams
• Exportable engineering graphics

### Reports & Documentation

• Load calculation reports
• Panel schedules
• Circuit schedules
• Service equipment schedules
• Grounding reports
• Voltage drop reports
• Material takeoffs
• Permit-ready documentation

### Project Management

• Save unlimited projects
• Reuse project templates
• Duplicate existing designs
• Project history and revisions

### Export Options

• PDF reports
• PDF design packages
• PNG drawings
• SVG diagrams
• Print-ready documents

## Designed For

• Electrical Contractors
• Electrical Designers
• Electrical Engineers
• Apprentices
• Inspectors
• Builders
• Homeowners
• Permit Applicants

## Workflow

1. Create a project
2. Complete the design wizard
3. Generate calculations
4. Review schedules and drawings
5. Export permit-ready documents

From initial load calculations to final one-line diagrams, Residential Electrical Distribution System Designer helps simplify residential electrical system design and documentation.
Disclaimer: "NEC" and "National Electrical Code" are registered trademarks of NFPA. This app is not affiliated with or endorsed by NFPA. All results must be reviewed by a licensed electrical engineer and approved by the local AHJ before use.


## Version history (last 1 release)

### 1.0 — 2026-06-11

No release notes.

## More apps by Yuhsiu Lai

- [Availability and Reliability](https://appshunter.io/ios/app/availability-and-reliability/id435033141)
- [Battery Capacity Calculator](https://appshunter.io/ios/app/battery-capacity-calculator/id445176473)
- [48VDC Power System](https://appshunter.io/ios/app/48vdc-power-system/id449477913)
- [NEC Electrical Code Tools](https://appshunter.io/ios/app/nec-electrical-code-tools/id469334093)
- [Engineer's Toolset](https://appshunter.io/ios/app/engineers-toolset/id478486737)
- [Battery Current Simulator](https://appshunter.io/ios/app/battery-current-simulator/id488430945)

All apps by Yuhsiu Lai: https://appshunter.io/developer/433114647

## Related topics

[electrical system designer](https://appshunter.io/ios/topics/electrical-system-designer)

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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 2026-06-25.*