T17-N Journeyman Electrician Mock Tests

1. General Electrical Knowledge (10% – 12%)This section covers the fundamental principles of electricity and the organization of the Definitions of key terms (e.g., Ampacity, Grounded Conductor, Bonded).Calculations: Applying Ohm’s Law and Power Law the NEC (Articles 90 and 100).Safety: Knowledge of OSHA requirements and NFPA 70E (Electrical Safety in the Workplace).2. Services, Feeders, and Branch Circuits (22% – 25%)This is often the most weighted portion of the exam, focusing on how power enters and moves through a building.Service Entrance: Sizing service-entrance conductors and overhead/underground service requirements.Load Calculations: Calculating general lighting loads, small appliance circuits, and laundry circuits for residential and commercial occupancies.Overcurrent Protection: Sizing fuses and circuit breakers (Article 240).GFCI AFCI: Identifying required locations for Ground-Fault and Arc-Fault protection.. Grounding and Bonding (15% – 18%)Understanding the difference between grounding (connecting to earth) and bonding (connecting metallic parts) is critical for Grounding: Requirements for grounding electrodes and grounding electrode conductors (Article 250).Equipment Grounding: Sizing Equipment Grounding Conductors (EGC) based on the overcurrent Rules for bonding water pipes, structural steel, and enclosures. Conductors and Dielectrics (12% – 15%)Focuses on the physical wires and how they are Adjustment: Calculating "derating" factors based on ambient temperature and the number of current-carrying conductors in a Types: Identifying the properties of THHN, THWN, XHHW, Coding: Standard industry practices for voltage identification Raceways and Enclosures (10% – 12%)Conduit Fill: Using Annex C and Chapter 9 tables to determine how many wires fit in a specific pipe (EMT, PVC, RMC).Box Fill: Calculating the volume of junction boxes based on wire size, clamps, and Installation: Securing requirements for various raceway types.. Equipment for General Use (10% – 12%)Lu