Code library

The electrical code, section by section

What the National Electrical Code actually requires, section by section, written for homeowners, contractors and property managers, plus what it means on a real job. Search it or browse it by topic.

Browse by topic

General rules and working space

Branch circuits, GFCI and AFCI

Load calculations

Services, feeders and outbuildings

Overcurrent protection

Grounding and bonding

Wiring methods, conductors and boxes

Switches, receptacles, panels and lighting

Appliances, HVAC, motors and generators

Special locations

EV charging, pools and solar

Backup power, solar interconnection and batteries

Low-voltage and fire alarm

Tables

California’s own rules

Where the 2025 California Electrical Code adds to or changes the national code.

Workplace safety

Federal OSHA electrical rules

29 CFR 1910 Subpart S (general industry) and 1926 Subpart K (construction), in full, with a one-line summary of each section.

San Clemente · South Orange County

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Kyle Robert Anderson KBC Electric · CSLB #1073066 · C-10 Electrical · Licensed since 2021