Engineering Fact Book For Residential Electrical Practice

The 2026 NEC changed everything.

Load calculations moved to Article 120. The general lighting value dropped from 3 VA per square foot to 2. AFCI protection now covers every 120-volt branch circuit in a dwelling unit. GFCI requirements expanded to outdoor outlets up to 60 amps. And every new home needs an EV-ready outlet under Section 210.17.

If your reference material is still based on the 2023 code, you are working with the wrong numbers.

The Fact Book for Residential Electrical Practice is the professional reference built from the ground up for the 2026 NEC. It organizes code data, installation standards, and technical specifications by how residential electricians actually think about jobs — not by how the NEC organizes articles.

What you will find inside:

Complete conductor and cable data with ampacity tables, derating factors, and cable type selection for every residential application.

Every AFCI and GFCI requirement under the 2026 NEC mapped room by room with a device selection decision matrix.

Box fill calculations with worked examples and pre-calculated reference tables for the most common residential configurations.

Step-by-step dwelling unit load calculations using the new 2 VA per square foot value with four fully worked examples at 100A, 200A, and 400A service sizes.

Complete grounding and bonding reference with GEC and EGC sizing tables, electrode specifications, and the most common grounding violations illustrated.

Receptacle placement rules, switch wiring configurations, NEMA identification charts, and torque specifications.

Appliance circuit sizing for every residential appliance from ranges to tankless water heaters, plus pool and spa wiring requirements and generator transfer switch data.

EV charging circuit sizing, solar PV system requirements, battery storage installation data, and the new Article 130 energy management system provisions.

Inspection checklists for rough-in and final with the top 20 residential violations and their NEC references.

Every section includes Field Pearls from experienced practitioners, Code Violation Alerts for common inspection failures, and NEC Code Basis references linking every requirement to the specific 2026 NEC article and section.

Built for the tool belt, the truck, and the plan table. Designed to be tabbed, marked up, and reached for when a code question comes up on the job.