gh-ec-electrical-wiring-domestic study guide
gh-ec-electrical-wiring-domestic · Work through your exam, one topic at a time.
The Georgia Electrical Wiring - Domestic (Residential) Contractor credential is a state-issued license for people who install, alter, and repair electrical wiring in one- and two-family dwellings and their accessory structures. It is aimed at working electricians and residential construction tradespeople who want to contract legally for home electrical work rather than only perform it under someone else's license. The gh-ec-electrical-wiring-domestic study guide has 10 sections and about 4,069 words.
01General Electrical Knowledge, Definitions, and Code Administration
Domain 1 rewards candidates who can treat the NEC as a structured legal document instead of a pile of tables. Questions here test Article 100 definitions, the scope and arrangement rules of Article 90, and the general requirements of Article 110 that apply to every installation you will ever inspect.
436 words, about 2 min02Wiring Methods and Materials: Cables, Raceways, Boxes, and Fittings
Domain 2 tests whether you can choose a wiring method that is legal for the location and install it with the right support, protection, and box capacity. Most lost marks here come from a single detail: the temperature or location limit attached to a cable.
440 words, about 2 min03Branch Circuits, Feeders, and Service Calculations
Domain 3 is the quantitative core of the exam. Expect questions on mandatory branch circuits, demand-factor arithmetic, and the step from a computed load to a conductor and service size.
362 words, about 2 min04Grounding, Bonding, and Overcurrent Protection
Articles 250 and 240 produce a large share of exam questions because they combine rules with tables. The key skill is knowing which table governs which conductor.
409 words, about 2 min05Devices, Switches, Receptacles, and Outlet and Lighting Installations
Domain 5 tests device-level code knowledge: switch and receptacle rules, lighting outlets, box mounting for devices, and the placement geometry of 210.52. 404.2 requires the switch to be within sight of the load unless a disconnecting means is provided, and 404.2(C) requires a grounded conductor at switch boxes controlling lighting loads, with limited exceptions where the wiring method can accommodate one later.
396 words, about 2 min06Special Occupancies and Residential-Specific Requirements
Domain 6 applies general rules to the rooms inspectors examine hardest: kitchens, bathrooms, garages, basements, and pool areas. The questions usually hinge on which circuit may serve which outlet.
403 words, about 2 min07Motors, Appliances, HVAC Equipment, and Dedicated Circuits
Motors, air conditioners, and appliances follow different sizing logic than general loads: conductors and overcurrent protection are sized from separate rules, and the nameplate frequently overrides the tables. Tables 430.248 and 430.250 give full-load currents.
377 words, about 2 min08Low-Voltage, Communications, and Signaling Systems
Domain 8 covers Chapter 8 communications circuits, Article 725 Class 1, 2, and 3 circuits, Article 760 fire alarm systems, and Article 411 low-voltage lighting. The rules differ from power wiring, and the exam tests whether you recognize when that is true.
404 words, about 2 min09Safety, Inspection, and Code-Compliance Practices
Domain 9 covers the practical side of compliance: safe work practices, the inspection sequence, and the tests and documentation an inspector expects to see. NFPA 70E governs electrical safe work practices in the workplace.
391 words, about 2 min10Georgia State Licensing Laws, Rules, and Business Requirements
Domain 10 tests the Georgia layer that sits on top of the NEC: who may contract, who may pull permits, and how the Board enforces licensing. These questions are usually straightforward if you separate the license from the business entity.
451 words, about 2 min