Idaho Limited Electrical Photovoltaic Installer Practice Exam

2017 National Electrical Code, NFPA – Introduction 5 items

Our study plan for this topic: Purpose and scope of the NEC (practical safeguarding of persons and property); NEC scope: covered and excluded installations (Article 90.2); Code arrangement: chapters, their hierarchy, and how they apply (Article 90.3); Authority having jurisdiction (AHJ): enforcement powers and special permissions (Article 90.4); Mandatory vs. permissive rules vs. explanatory material (Article 90.5); Equipment examination, listing, and approval for safety (Article 90.7); Wiring planning for future expansion and circuit limitations in enclosures (Article 90.8); Units of measurement: SI and inch-pound dual system and compliance (Article 90.9).

2017 National Electrical Code, NFPA – Chapter 1 7 items

Our study plan for this topic: Article 100 key definitions for PV and electrical installations (e.g., photovoltaic system, interactive system, stand-alone system, hybrid system, charge controller); Equipment approval, listing, labeling, and identification requirements; Electrical connections: terminals, splices, conductor materials, and temperature limitations; Working space and clearance requirements around electrical equipment; Guarding of live parts and arc-flash hazard warning marking; Equipment marking requirements: manufacturer identification, ratings, and field-applied hazard labels; Wiring integrity, wiring methods, and conductor sizing standards; Enclosure type selection for indoor and outdoor environments.

2017 National Electrical Code, NFPA – Chapter 2 7 items

Our study plan for this topic: Grounding and bonding requirements for PV and electrical systems (Article 250); Grounding electrode system types, installation, and sizing; Equipment grounding conductor types, identification, and sizing; Branch circuit requirements, ratings, and GFCI/AFCI protection (Article 210); Branch-circuit, feeder, and service load calculations (Article 220); Service conductor installation, disconnecting means, and overcurrent protection (Article 230); Overcurrent protection devices, ratings, and location requirements (Article 240); Surge-protective device (SPD) types, installation, and connection requirements (Article 285).

2017 National Electrical Code, NFPA – Chapter 3 6 items

Our study plan for this topic: Conductor ampacity tables and temperature rating corrections (Article 310); Conductor insulation types, applications, and marking requirements; Conductors in parallel — requirements and restrictions; General wiring methods — protection against physical damage and underground installation requirements (Article 300); Outlet, device, pull, and junction box sizing, fill calculations, and support (Article 314); Raceway types — permitted uses, securing, supporting, and bending requirements (EMT, RMC, IMC, FMC, LFMC, PVC, LFNC); Cable wiring methods — permitted uses and installation requirements (Type MC, NM, UF, SE/USE); Cabinets, cutout boxes, and enclosures — conductor deflection, wiring space, and installation (Article 312).

2017 National Electrical Code, NFPA – Chapter 4 6 items

Our study plan for this topic: Transformer overcurrent protection requirements (Articles 450.3, 450.4); Transformer installation types and location requirements (dry-type, oil-insulated, liquid-filled); Transformer vault construction, ventilation, and access requirements; Switchboard, switchgear, and panelboard overcurrent protection and grounding; Switch installation, ratings, and connection requirements; Storage battery installation, disconnecting means, and ventilation; Generator overcurrent protection, conductor ampacity, and disconnecting means; Flexible cord and cable uses, ampacity, and prohibited applications.

2017 National Electrical Code, NFPA – Chapter 5 6 items

Our study plan for this topic: Classification of hazardous locations (Class I, II, III; Divisions 1 and 2; Zones 0, 1, 2, 20, 21, 22); Wiring methods and sealing requirements in Class I, II, and III locations; Protection techniques for hazardous locations (explosionproof, intrinsically safe, flameproof, pressurization, encapsulation); Electrical requirements for specific hazardous occupancies (commercial garages, aircraft hangars, motor fuel dispensing facilities, bulk storage plants, spray application areas); Essential electrical systems and wiring requirements for health care facilities; Electrical installations for mobile homes, manufactured homes, recreational vehicles, and park trailers; Wiring methods and grounding for marinas, floating buildings, and agricultural buildings; Temporary electrical installations and wiring for assembly occupancies, theaters, and similar locations.

2017 National Electrical Code, NFPA – Chapter 6 10 items

Our study plan for this topic: PV system definitions and terminology (Article 690 Part I); Maximum voltage calculations for PV source and output circuits; Circuit sizing and maximum current calculations for PV systems; Overcurrent protection requirements for PV system DC circuits; PV system disconnecting means requirements and ratings; Wiring methods, conductor types, and labeling for PV system DC circuits; System grounding, equipment grounding, and bonding for PV arrays; Required markings and labels for PV system components and disconnects.

2017 National Electrical Code, NFPA – Chapter 7 5 items

Our study plan for this topic: Interconnected electric power production sources: point of connection and equipment approval (Article 705); Disconnecting means requirements for interconnected systems and energy storage systems; Energy storage system (ESS) classification, circuit sizing, and overcurrent protection (Article 706); ESS location requirements: ventilation, guarding, working space, and egress; Charge control and diversion charge controller requirements for ESS; Stand-alone system wiring, equipment approval, and capacity requirements (Article 710); DC microgrid system grounding, ground-fault detection, and arc fault protection (Article 712); Loss of primary source disconnection and anti-islanding requirements.

2017 National Electrical Code, NFPA – Chapter 9 3 items

Our study plan for this topic: Conduit and tubing fill percentages (Table 1 — 1, 2, and over 2 conductors); Conduit bend radius requirements (Table 2); Cross-sectional area and fill calculations for specific conduit types (EMT, RMC, IMC, PVC, FMC, LFMC, LFNC); Insulated conductor dimensions and cross-sectional areas by wire type and AWG size (Table 5); Compact conductor nominal dimensions and areas (Table 5A); Bare conductor properties, DC resistance, and stranding data (Table 8); AC resistance and reactance for conductors in conduit, including effective impedance at 0.85 power factor (Table 9); Conductor stranding classes by size for copper and aluminum (Table 10).

2017 National Electrical Code, NFPA Calculations – Chapters 4 and 9 5 items

Our study plan for this topic: PV source and output circuit current calculations (Article 690.8); Maximum PV system voltage determination and temperature correction factors (Article 690.7); Conductor ampacity tables and temperature correction/adjustment factors (Article 310.15); Branch-circuit, feeder, and service load calculations (Article 220); Motor branch-circuit conductor sizing and full-load current tables (Article 430.22 and Tables 430.247–430.250); Motor branch-circuit short-circuit and ground-fault protective device ratings (Table 430.52); Conduit fill calculations using Chapter 9 Tables 1, 4, and 5; Overcurrent protection sizing for PV system dc circuits (Article 690.9).