The PE Power exam blueprint maps every topic NCEES tests on the PE Electrical and Computer: Power exam. If you want to pass this exam on your first attempt, you need to understand what it covers, how it works, and where to focus your study time. This post breaks down the complete PE Power exam blueprint — all 9 knowledge areas, the 6 supplied standards, the exam format, and a clear strategy to build your preparation plan.
I hold PE licenses in Illinois, New Jersey, and Pennsylvania — all in the power discipline. Before I passed, I wished someone had given me a clear map of exactly what the exam covers and how the knowledge areas connect to real power engineering work. That is what this post delivers. Read it before you do anything else — the PE Power exam blueprint becomes your study roadmap, and knowing it well changes how you allocate every hour of preparation time.
PE Power Exam Format at a Glance
The current CBT format does not allow you to bring printed references. You receive six specific standards within the exam interface. Therefore, learning what those standards contain — and how to navigate them under time pressure — ranks among the most important exam preparation skills you can build. We cover this in detail later in this series.
The 9 PE Power Exam Blueprint Knowledge Areas
The PE Electrical and Computer: Power exam covers 9 knowledge areas. The table below lists each area and assigns a study tier based on the weight NCEES gives it in the official exam specification. Download the current specification from ncees.org for exact question counts per area.
Source: All knowledge area names, sub-topics, and question counts come directly from the NCEES PE Electrical and Computer — Power CBT Exam Specifications, effective October 2025. Download the current specification from ncees.org for the full authoritative document.
What Each Knowledge Area Covers in the PE Power Exam Blueprint
1. Measurement and Instrumentation (6–9 Questions) — Tier 3
This area covers three core sub-topics from the NCEES specification:
- A. Instrument transformers and metering — Expect questions on current transformer (CT) and potential transformer (PT) ratios, burden calculations, accuracy classes, and metering connections. You need to size CTs for both metering and relaying applications and understand polarity markings.
- B. Insulation testing — This includes Megger testing, polarization index (PI), and dielectric absorption ratio (DAR). Know the acceptance criteria for each test type and how to interpret results for different insulation classes.
- C. Ground resistance testing — Covers fall-of-potential method, soil resistivity measurements, and ground grid design calculations. If you have spent time in substations or done commissioning work, these topics will feel familiar. However, the exam demands calculation-level precision, not just conceptual understanding.
2. General Applications (8–12 Questions) — Tier 2
This area covers five sub-topics that span practical power engineering applications:
- A. Lightning protection — Covers rolling sphere method, protection angle method, and mesh method for lightning protection system design per NFPA 780 principles.
- B. Surge protection — Includes surge protective device (SPD) selection, transient voltage surge suppressor ratings, and coordination of SPDs across distribution systems.
- C. Illumination/lighting — Tests the lumen method, point-by-point calculations, and coefficient of utilization. Lighting calculations appear more often than most power engineers expect — budget focused study time here.
- D. Energy management and demand calculations — Covers load factor, demand factor, diversity factor, coincidence factor, and utility billing demand calculations.
- E. Grounding — Includes system grounding methods (solidly grounded, resistance grounded, ungrounded), equipment grounding, and ground fault current calculations.
3. Electrical Safety (10–15 Questions) — Tier 1
Electrical Safety carries Tier 1 weight and draws heavily from four of your six supplied standards. This area tests four sub-topics:
- A. Wiring methods and installations — Covers NEC Chapter 3 wiring methods, conductor sizing per NEC Article 310, raceway fill calculations, and derating factors. Navigate NFPA 70-2020 quickly for these questions.
- B. Hazardous locations — Tests Class/Division and Zone classification systems. Use NFPA 497-2021 for flammable liquids and gases (Class I) and NFPA 499-2021 for combustible dusts (Class II/III). Both standards appear on the exam — learn to navigate them before exam day.
- C. Special occupancies and systems — Covers NEC Articles 500–590 (special occupancies) and Articles 600–695 (special equipment), including healthcare facilities, assembly occupancies, and fire pump installations.
- D. Shock and burns — Includes arc flash incident energy calculations, PPE category selection per NFPA 70E-2021, shock approach boundaries (limited, restricted, prohibited), and energized electrical work permits.
Do not treat Electrical Safety as background knowledge. Treat it as a primary study target requiring code navigation fluency across multiple supplied standards.
4. Circuit Analysis (10–15 Questions) — Tier 1
Circuit Analysis forms the mathematical backbone of every other knowledge area on the PE Power exam. This area tests six sub-topics:
- A. Three-phase circuits — Covers balanced and unbalanced three-phase power calculations, wye-delta conversions, and line-to-phase voltage/current relationships.
- B. Symmetrical components — Tests positive, negative, and zero sequence networks, sequence impedance calculations, and fault analysis using symmetrical components. This sub-topic feeds directly into Protection and T&D Analysis questions.
- C. Per-unit system — Includes base conversion across voltage levels, per-unit impedance calculations for multi-voltage systems, and per-unit fault current calculations.
- D. Phasor diagrams — Covers voltage and current phasor relationships, power triangle analysis, and graphical representation of circuit quantities.
- E. Single-phase circuits — Tests AC circuit analysis including impedance, admittance, resonance, and power calculations in single-phase systems.
- F. Direct current circuits — Covers Kirchhoff’s laws, Thevenin/Norton equivalents, superposition, and DC network analysis.
Master these fundamentals first — they support your work in Protection, T&D Analysis, and Rotating Machines.
5. Power Electronic Circuits and Control Devices (5–8 Questions) — Tier 3
This area tests two sub-topics that reflect the industry’s shift toward power electronics and renewable integration:
- A. Power electronics (converters, inverter-based resources, and variable frequency drives) — Covers rectifier and inverter operation, VFD architecture (AFD/ASD), harmonic generation and mitigation, and inverter-based resource (IBR) characteristics for solar and wind applications.
- B. Relays, switches, Boolean and ladder logic — Tests relay logic design, Boolean algebra simplification, ladder diagram interpretation, and control circuit analysis.
If your background focuses on traditional generation or T&D, budget extra study time here — the IBR and VFD content continues growing in line with industry trends.
6. Rotating Machines (5–8 Questions) — Tier 3
This area covers two sub-topics focused on electrical machine applications:
- A. Machine types and applications — Tests synchronous generators (excitation, power factor control, capability curves), induction motors (torque-speed characteristics, slip, efficiency), DC machines, and single-phase motors. Know the performance equations and know which machine types apply in which industrial applications.
- B. Motor starting — Covers direct-on-line (DOL), reduced-voltage starting methods (autotransformer, wye-delta, soft starter), and VFD starting. Understand voltage drop during starting and the impact on other connected loads.
7. Electric Power Devices (8–12 Questions) — Tier 2
This area tests five sub-topics covering the major equipment categories in power systems:
- A. Transformers — Covers connections (wye, delta, open-delta, zigzag), impedance and voltage regulation calculations, vector groups, nameplate data interpretation, and transformer testing (TTR, insulation resistance, dissolved gas analysis).
- B. Capacitors — Tests capacitor bank sizing for power factor correction, switching transients, harmonic resonance concerns, and capacitor protection.
- C. Electrical energy storage (e.g., battery, ultra capacitor) — Covers battery sizing calculations, battery types and characteristics, UPS system design, and ultra capacitor applications.
- D. Alternative power generation (e.g., photovoltaics [PV], wind) — Tests PV system sizing, inverter specifications, wind turbine electrical characteristics, and interconnection requirements. This content grows each exam cycle.
- E. Testing — Covers acceptance testing, commissioning procedures, and routine maintenance testing for power equipment.
8. Transmission and Distribution Analysis — High, Medium, and Low Voltage (8–12 Questions) — Tier 2
This area covers eight sub-topics that define the analytical core of power systems engineering:
- A. Voltage drop — Tests conductor impedance calculations, voltage drop formulas for single-phase and three-phase circuits, and NEC voltage drop recommendations.
- B. Voltage regulation and support — Covers voltage regulator settings, tap changers (LTC), capacitor bank placement for voltage support, and voltage profile analysis.
- C. Power factor correction — Tests capacitor bank sizing, reactive power compensation, and economic analysis of power factor improvement.
- D. Power quality — Covers harmonic analysis, total harmonic distortion (THD), IEEE 519 limits, voltage sags/swells, and flicker.
- E. Fault current analysis — Tests symmetrical and asymmetrical fault calculations, three-phase, single-line-to-ground, line-to-line, and double-line-to-ground faults using symmetrical components from Circuit Analysis.
- F. Transformer connections — Covers wye-delta, delta-wye, open-delta, and Scott-T connections with phase shift analysis.
- G. Power flow — Tests load flow concepts, bus types (slack, PV, PQ), and power flow equations.
- H. Power system stability — Covers transient stability, steady-state stability, and the equal-area criterion.
Symmetrical components from Circuit Analysis feed directly into fault current analysis here. Study these two areas together for maximum efficiency.
9. Protection (10–15 Questions) — Tier 1
Protection carries Tier 1 weight on the PE Power exam blueprint. This area tests four sub-topics:
- A. Overcurrent protection — Covers fuse characteristics and selection, circuit breaker ratings and trip curves, recloser operation and coordination, and overcurrent relay settings (pickup, time dial, instantaneous).
- B. Protective relaying (e.g., differential, distance, undervoltage, pilot) — Tests relay operating principles, setting calculations, and application criteria for each relay type. Differential protection for transformers and buses appears frequently.
- C. Protective devices (e.g., fuses, breakers, reclosers) — Covers device ratings, interrupting capacity, and selection criteria based on available fault current and system voltage.
- D. Coordination — Tests time-current curve (TCC) analysis, coordination intervals, and selective coordination between upstream and downstream protective devices.
Many experienced power engineers have strong field knowledge but limited analytical depth in relay coordination and TCC analysis. Treat this area as a primary study target from day one — do not rely on on-the-job familiarity alone.
The 6 Supplied Standards for the PE Power Exam
NCEES provides these six standards electronically within the exam interface. You cannot bring any personal references — these six documents serve as your only reference material during the exam:
By reviewing the standards, we can link each to a specific knowledge area. To make learning easier and more interesting, we recommend studying the standards and KAs in parallel. This should improve your understanding and appreciation of how applicable they are. In simple terms, this strategy will help you recall them during the examination period.
The supplied standards function as lookup tools for specific values, tables, and code requirements — not substitutes for knowing the material. If you open the NEC for the first time on exam day, you will spend hours searching instead of answering questions. Purchase or access these six standards before your preparation begins. Use them during every practice problem that involves codes, hazardous locations, protection settings, or equipment selection.
Some engineers may want to extend their learning with relevant IEEE standards or guides, such as IEEE Std 141 (Red Book), IEEE Std 241 (Gray Book), and IEEE Std 242 (Buff Book). These are NOT part of the current PE Power exam. While these IEEE standards remain excellent study resources for building your power engineering knowledge, NCEES does not provide them during the exam. Focus your standards navigation practice on the six documents listed above.
What the PE Power Exam Blueprint Tells You About Preparation
The knowledge area structure reveals a clear strategy. Here is what the PE Power exam blueprint signals about how to prepare:
- The three Tier 1 areas carry the heaviest weight. Circuit Analysis, Power System Protection, and Electric safety together dominate the exam. If you score below passing level in these three areas, strong performance elsewhere will not compensate. Prioritize them while maintaining a tight score on the remaining areas.
- The exam rewards breadth, not just depth. A practicing substation engineer may excel at protection and T&D analysis but struggle with power electronics or rotating machines. NCEES penalizes narrow expertise — you must reach a baseline level of competence in every knowledge area to pass.
- Standards navigation functions as a tested skill. Several questions will require you to look up a specific NEC table, NFPA 70E PPE category, NFPA 497 area classification, or ANSI C2 clearance distance. If you cannot find values in the supplied standards quickly, time pressure alone will cost you questions you could otherwise answer correctly.
- The 9-hour format demands pacing discipline. With 80 questions across 9 hours, you average approximately 6.25 minutes per question, assuming you use your break time — significantly more than the FE exam. This gives you enough time to read carefully and work through multi-step calculations. However, spending too long on one complex problem steals time from others. Flag and skip any problem that consumes more than 8 minutes, then return to it with remaining session time.
Watch: Are you still wondering if it’s worth your time and effort to pursue the PE license? Follow the PE Power Brief
Who Should Take the PE Power Exam
The PE Electrical and Computer: Power exam fits engineers whose daily work involves:
- Power distribution system design (residential, commercial, industrial, utility)
- Substation engineering (design, protection, relay coordination)
- Renewable energy systems (solar, wind, storage interconnection)
- Industrial power systems (motor drives, short-circuit analysis, coordination)
- Utility T&D operations and planning
- Electrical safety program management
Engineers whose primary work centers on electronics, controls, communications, or RF engineering should evaluate the PE Electrical and Computer: Electronics, Controls, and Communications exam instead. The PE Power exam aligns specifically with power engineering practice — this makes it both more accessible and more demanding for power engineers.
Most states require four years of progressive engineering experience under a licensed PE before you can apply. Some states set different requirements. Check your specific state licensing board's rules — NCEES's website links to every state board, or you can call your board directly. Do not assume your state's requirements match another state's.
Summary
The PE Electrical and Computer: Power exam is an 80-question, 9-hour CBT exam covering 9 knowledge areas. The three Tier 1 areas — Circuit Analysis, Power System Protection, and Electrical Safety — carry the heaviest weight and demand your most focused study effort. NCEES supplies six standards electronically within the exam interface: NFPA 30B-2023, NFPA 70-2020 (NEC), NFPA 70E-2021, NFPA 497-2021, NFPA 499-2021, and ANSI C2-2017 (NESC). No personal references enter the testing room. Download the official exam specification from ncees.org. The remaining posts in this series cover each knowledge area in depth, with the formulas, standard references, and problem-solving approaches the exam requires.
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