hero.title
hero.subtitle
calculator.conduit_type
calculator.conduit_size
Quick Presets
calculator.wire_config
features.title
features.subtitle
features.instant.title
features.instant.description
features.nec.title
features.nec.description
features.multilang.title
features.multilang.description
features.export.title
features.export.description
features.visual.title
features.visual.description
features.mobile.title
features.mobile.description
how_it_works.title
how_it_works.subtitle
01
🔧
how_it_works.step1.title
how_it_works.step1.description
02
⚡
how_it_works.step2.title
how_it_works.step2.description
03
📊
how_it_works.step3.title
how_it_works.step3.description
about.title
about.content
NEC Fill Requirements
- • 1 wire: 53% maximum fill
- • 2 wires: 31% maximum fill
- • 3+ wires: 40% maximum fill
- • Grounding conductors included
Safety Benefits
- • Proper heat dissipation
- • Easy wire installation
- • Reduced cable damage
- • Code compliance assurance
Professional Accuracy
Our calculator uses official NEC Chapter 9 data and Annex C tables to ensure 100% accurate results. Trusted by electricians, engineers, and contractors worldwide for critical electrical installations.