Study tips, exam guides, and everything you need to know about NEC certification.
A working electrician's breakdown of the difference between equipment grounding conductors and equipment bonding jumpers — and how the 2023 NEC changes the way you tie grounds together in the box.
Read more →A clear, code-based explanation of when you're required to establish a grounding electrode system at a detached building or outbuilding fed from another structure.
Read more →A clear, practical walkthrough of Article 120 dwelling load calculations — the 2 VA per square foot rule, what counts toward square footage, small appliance and laundry circuits, and how to set yourself up for exam success.
Read more →A practical breakdown of NEC Article 320 armoured cable — what makes Type AC different from MC, where you can run it, and how to handle the bonding strip, anti-short bushings, and ampacity rules.
Read more →A step-by-step walkthrough of sizing grounding electrode conductors with NEC Table 250.66 and Article 250.66 — including the parallel-conductor trick and the electrode exception that trips up most exam-takers.
Read more →A working example from a 40-year NEC instructor showing how a box fill question can carry the wrong answer key — and why you should always challenge your study source.
Read more →A practical walkthrough of transformer turn ratios, primary and secondary current calculations, and NEC 450.3(B) overcurrent protection — the calculation skills you need for the journeyman and master exams.
Read more →A plain-English walkthrough of the 2026 NEC revisions to Section 250.122, covering how equipment grounding conductors must now be sized for standard circuits, parallel runs, motor circuits, and feeder taps.
Read more →A working electrician's step-by-step exam-day strategy for beating the testing algorithm, managing stress, and maximising your score on the journeyman or master's exam.
Read more →Understand when extending or modifying an existing branch circuit triggers AFCI protection under NEC 210.12, and when the 6-foot exception lets you off the hook.
Read more →A working electrician's breakdown of the first five must-know NEC articles for residential work — from Article 100 definitions to receptacle spacing in 210.52.
Read more →A clear breakdown of where the NEC actually mandates voltage drop, where it's only a recommendation, and how the IECC quietly requires it for commercial work.
Read more →Can you legally put a dishwasher and a garbage disposal on the same branch circuit? Here's what NEC 210.23 actually says — and why the 50% rule is widely misunderstood.
Read more →A clear, code-based breakdown of multiwire branch circuits — what they are, how to install them properly, and how to avoid the common mistakes that burn up neutrals and equipment.
Read more →A step-by-step breakdown of a complete residential dwelling load calculation using the 2026 NEC — general lighting, fixed appliances, dryer, range, and HVAC.
Read more →A practical walkthrough of the NEC rules for sizing branch circuit conductors and overcurrent protection for a residential electric water heater — including the minimum and maximum requirements most electricians never learn.
Read more →A practical guide to equipotential bonding for permanently installed pools, covering what must be bonded, methods for bonding, and key NEC 680.26 requirements every electrician needs to know.
Read more →A complete breakdown of NEC Section 230.85 emergency disconnect requirements for one and two family dwellings, including your three disconnect options, marking rules, and what changed from 2020 to 2023.
Read more →Learn the most common causes of AFCI breaker nuisance tripping and a proven step-by-step troubleshooting method used by experienced electricians to diagnose and fix the problem every time.
Read more →A clear breakdown of the differences between MC cable and AC cable — from armour construction and equipment grounding to healthcare facility requirements under NEC Articles 320, 330, and 517.
Read more →A breakdown of the major NEC surge protection requirements introduced in 230.67 across the 2017, 2020, and 2023 code cycles — from voluntary to mandatory for dwelling units and beyond.
Read more →A deep dive into how even professional exam prep databases get NEC questions wrong, and what electricians can learn from dissecting those mistakes to sharpen their own code knowledge.
Read more →A clear breakdown of when grounds and neutrals must be bonded versus separated in an electrical system, why it matters for safety, and what happens when you get it wrong.
Read more →A complete page-by-page guide to tabbing your 2026 NEC codebook so you can find any article, table, or section in seconds during your electrical exam.
Read more →A step-by-step walkthrough of how to calculate raceway fill when you have different conductor types and sizes — one of the most common NEC exam calculation questions.
Read more →Real-world advice from a working electrician who passed the journeyman exam on his first attempt — no expensive courses, no magic tricks, just a proven approach to learning the NEC.
Read more →Everything you need to know about preparing for and passing your National Electrical Code certification exam, from study strategies to exam day tips.
Read more →A breakdown of the most heavily tested NEC topics across all electrician licensing exams, with tips on what to focus your study time on.
Read more →Understanding the different types of NEC-based electrical licensing exams, their requirements, and how to choose the right preparation path.
Read more →A comprehensive guide to NEC Article 250 covering grounding electrode systems, equipment grounding, bonding requirements, and common exam questions.
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