Table of Contents:

NEC Tables:

310.16
310.15(B)(2)(a)
300.5, 250.66
250.122
Wire-Fill for EMT NEC Annex C-Table C1

Reference:

Common NEMA Enclosure Types
Metric Essentials for Electricians
NEMA Motor Starter Reference Chart
3-phase A.C. Motor Connections for 9-Lead, Dual-Voltage Motors
Calculating Conduit Bends for Offsets and Saddles

Formulas:

Basic Electrical Formulas
Useful Electrical power Formulas
Common Voltages
Voltage Drop Formulas
Transformer Calculations

Examples:

Derating Ampacities at a Glance More Than a Conductors in a Raceway NEC Article 310
Service Grounding and Bonding at a Glance NEC Article 250
Typical Motor Branch Circuit at a Glance NEC Article 430
Typical Transformer Installation at a Glance NEC Articles 240, 250 & 450
Feeder and transformer Tap Rules at a Glance NEC 240.21
Common GFCI Locations