Resources
Official sources, decoded.
Know what to look for before you open a 900-page code. These are US sources; check your local equivalents.
StandardNFPA 70 — National Electrical Code
For: Electrical apprentices and installers
Open official source The US standard for safe electrical installation, adopted region by region. Free read-only access needs an NFPA account.
- Article 100 — definitions used throughout the code
- Article 110 — clearances and workmanship
- Article 210 — branch circuits and outlets
- Article 250 — grounding and bonding
A free government guide to running a safe worksite, built around the construction “Focus Four” hazards.
- Falls — ladders, scaffolds and roofs
- Struck-by — vehicles and falling objects
- Caught-in/between — trenches and machinery
- Electrocution — power lines and ground faults
Look up the prevailing wage legally owed for your trade and county on federally funded work.
- Search by state, county and trade
- Compare with your pay stubs
- Applies to schools, highways and public buildings