Month: October 2026

Texas Journeyman Electrician Exam Content Outline (2026 NEC): 20 Subject Areas and How to Study Them

The Texas Journeyman exam outline in one page: 20 subject areas across the NEC Knowledge and Calculations parts, scored questions per area, the score you need on each part, time…

Updated 2026-10-17 · Read the article ›

Low-Voltage and Fire Alarm Circuits (NEC 725 and 760): Cable Ratings, Separation and Support for Apprentices

Class 2 and Class 3 circuits, fire alarm cable types, plenum and riser ratings, keeping low-voltage cable away from power conductors, and how to support it, explained for apprentices preparing…

Updated 2026-10-12 · Read the article ›

Swimming Pool Bonding (NEC 680): The Equipotential Grid, GFCI and Clearances for Apprentices

Why pools are bonded, what goes into the equipotential bonding grid, how bonding differs from grounding, GFCI for pool pumps, receptacle and luminaire clearances, and a pool pump branch-circuit example…

Updated 2026-10-12 · Read the article ›

EV Charger Circuits (NEC 625): Sizing a Level 2 Circuit at 125%, GFCI and the Load You Add to the Service

Learn to size Level 2 EV charger circuits at 125%, check GFCI and disconnect requirements, and calculate the load a charger adds to a dwelling service under the 2026 NEC,…

Updated 2026-10-12 · Read the article ›

Temporary Wiring and Available Fault Current (NEC 590 and 110): Jobsite Power Rules for Apprentices

Temporary power on a construction site: how long it may stay, GFCI for jobsite receptacles, protecting lamps and cords, and removal, plus what available fault current means, where it is…

Updated 2026-10-12 · Read the article ›

Mobile Homes, RV Parks and Marinas (NEC 550, 551 and 555): Service Location, Site Receptacles and the Load Math

Where the service for a mobile home goes, why its feeder has four conductors, what receptacles an RV site needs, ground-fault protection on docks, and two step-by-step load calculations, a…

Updated 2026-10-12 · Read the article ›

HVAC and Appliance Circuits (NEC 440 and 422): Reading MCA and MOCP, Water Heaters and Disconnects

How to size an air conditioner circuit from the nameplate MCA and MOCP, why a water heater circuit is sized at 125%, where the disconnect goes, and two worked examples…

Updated 2026-10-12 · Read the article ›

NEC 404, 406 and 410: Receptacles, Switches and Luminaires for Apprentices

Learn the 2026 NEC rules for receptacles, switches, luminaires and ceiling fan support, including replacement receptacles, switch-box neutrals, damp and wet locations, and 180 VA receptacle load calculations for Texas…

Updated 2026-10-17 · Read the article ›

Underground Wiring and Burial Depth (NEC 300.7, formerly 300.5): Cover Depths, Driveways and Protection Where It Comes Up

How deep to bury cable and conduit under the NEC, what "cover" means, the shallower depths for GFCI residential circuits, driveways and parking areas, warning ribbon, wet-location conductors and protection…

Updated 2026-10-12 · Read the article ›

Service Equipment for Apprentices (2026 NEC): Meter, Main Disconnect, Panel and Neutral-to-Ground Bonding

How a residential electrical service is put together, from the utility point to the main disconnect and panelboard: what counts as service equipment, where neutral and ground are bonded, why…

Updated 2026-10-12 · Read the article ›