ElectricalCompliance Management3MediumElectrician$ implied
An electrician needs to fit two 14/3 cables in a standard 4-inch octagon box for smoke detector interconnections but is being told it may violate code due to box fill limits.
No accessible tool or app to quickly calculate NEC box fill limits and check code compliance for a given box and cable configuration on the job site.
47
0
Opp. Score
47
Severity
3Medium
Willingness to Pay
implied
Added
Jun 3, 2026
App Concept
BoxFill Pro
A mobile-first app that lets electricians enter box dimensions and wire counts to instantly determine code compliance per NEC 314.16. Includes visual diagrams, code references, and material recommendations. Eliminates guesswork and reduces callbacks from inspectors.
Key Features
- Input box type, size, and wire gauge/conductor count to compute total fill and remaining capacity
- Show color-coded compliance status (pass/warning/fail) with NEC section citations
- Recommend larger boxes or alternative configurations when current selection fails
- Save job-specific box layouts and share reports with foremen or inspectors
Target Users: Electricians and electrical contractors in residential and commercial construction, especially those doing rough-in work for smoke detectors, switches, and outlets.
Revenue Model: $4.99/mo per user subscription or $29.99 annual; free tier limited to basic box checks with ads.
Part of App Idea
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