Craftsman Electricity study guide
Craftsman Electricity · Work through your exam, one topic at a time.
Craftsman Electricity is a trade-level credential for electricians and maintenance craftworkers who install, maintain, and troubleshoot electrical systems in industrial, commercial, and institutional settings. It sits between a general maintenance qualification and a full journeyman electrician license: candidates are expected to read drawings and the applicable electrical code, select and install wiring methods correctly, size branch circuits, feeders, and services, apply grounding and overcurrent protection rules, connect and control motors and HVAC equipment, work with transformers and distribution equipment, and diagnose faults safely. The Craftsman Electricity study guide has 8 sections and about 2,397 words.
01Electrical Safety and Codes
The Electrical Safety and Codes domain tests how well you apply NFPA 70 (NEC) scope, working-space rules, and job-site safety practices. Expect questions on Article 90 and 110, local amendments, lockout/tagout, PPE, and arc-flash boundaries rather than memorized trivia.
310 words, about 2 min02Electrical Theory and Principles
This domain tests Ohm's law, power relationships, series and parallel circuits, AC impedance, power factor, and three-phase calculations. Questions often require selecting the right formula and distinguishing nameplate, measured, and calculated values.
293 words, about 1 min03Wiring Methods and Materials
This domain tests NEC Chapter 3 wiring methods, conductor selection, box fill, support, and protection. You need to match cable and raceway types to dry, damp, wet, exposed, and hazardous locations, and apply ampacity and fill rules.
318 words, about 2 min04Branch Circuits, Feeders, and Service Calculations
This domain tests Article 210 branch-circuit rules, Article 220 load calculations, and Article 215 feeder sizing. Expect dwelling and commercial load calcs, receptacle spacing, GFCI/AFCI requirements, and continuous-load factors.
280 words, about 1 min05Grounding, Bonding, and Overcurrent Protection
This domain tests Article 250 grounding and bonding and Article 240 overcurrent protection. You must distinguish the grounded conductor, grounding electrode conductor, equipment grounding conductor, and bonding jumper, and size each correctly.
299 words, about 1 min06Motors, Controls, and HVAC Equipment
This domain tests NEC Article 430 motor circuits and Article 440 HVAC equipment. You need to size branch-circuit conductors, overload protection, short-circuit protection, disconnects, and controllers from motor nameplate and table values.
284 words, about 1 min07Transformers and Power Distribution
This domain tests Article 450 transformer ratings, primary and secondary currents, overcurrent protection, grounding, and distribution equipment. Expect kVA, turns ratio, and three-phase current calculations.
297 words, about 1 min08Electrical Maintenance and Troubleshooting
This domain tests safe diagnosis of circuits, motors, and controls using meters and systematic isolation. You need to interpret voltage, current, resistance, and insulation-resistance readings and distinguish an open circuit from a high-resistance connection.
316 words, about 2 min