Inspector's overly strict interpretation of box fill rules caused wasted time rerunning cables and redoing boxes.

No clear, authoritative digital reference for box fill calculations accepted by inspectors, leading to conflicting interpretations.

Severity

4High

Willingness to Pay

implied

Added

Jun 4, 2026

Implied Software Gaps

Software that calculates box fill compliance and produces inspector-accepted documentation would replace manual interpretation and rework.

App Concept

BoxFill Code Assistant

An app that instantly calculates allowable conductors based on box markings and NEC code, generates a compliance report accepted by inspectors, and provides visual guidance for box fill. Saves hours of rework and inspection delays.

Key Features

Scan box label with camera to auto-detect size and conductor limits
Input wire gauges and types to calculate fill percentage
Generate printable compliance report with NEC references
Include grounding and clamps calculations per code

Target Users: Electricians and electrical contractors in residential and commercial construction who deal with box fill inspections.

Revenue Model: $9.99/month per user subscription or $99/year; free tier with limited calculations

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