NEC Solar & EV Calculator
Solar & EV Circuit Sizing
Only for iPhone
Free · In-App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Size PV strings, verify rapid shutdown and 120% busbar compliance, and calculate EV charger circuits — fast, code-accurate NEC 2023 calculations on your phone.
NEC Solar & EV Calculator brings fast, code-accurate NEC 2023 calculations for solar and EV charging installations right to your phone — built for installers, electricians, and inspectors working in the field.
FOUR ENGINEERING MODULES
• PV String Sizing (NEC Article 690) Size PV string voltage and current, accounting for temperature correction and module specifications.
• Rapid Shutdown Compliance (NEC 690.12) Check controlled conductor compliance for rapid shutdown requirements at a glance.
• Interconnection — 120% Rule (NEC 705.12(B)(3)) Verify busbar interconnection limits for solar backfeed against the 120% rule.
• EV Charger Circuit Sizing (NEC Article 625) Size branch circuits for EVSE (electric vehicle supply equipment) installations.
FREE TO START PV String Sizing and Rapid Shutdown Compliance are free to use, no account or subscription required.
UNLOCK PRO A one-time purchase unlocks all 4 modules plus unlimited PDF export for every module — no subscription, all future updates included.
BUILT FOR THE JOB SITE
• Clean, fast interface designed for quick lookups between tasks
• PDF export for job documentation and inspection records • Light and dark mode support
DISCLAIMER All calculations are provided for reference only. Results must be verified by a licensed electrician against the governing NEC edition and any local amendments before use in construction. This app is not a substitute for professional engineering judgment or local code compliance review.
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The developer, V PUGAZHENTHI, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- V PUGAZHENTHI
- Size
- 7.8 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- NEC SOLAR PRO USD 9.99
- Copyright
- © All Rights Reserved
