PE Electrical: Power

Where points go — The code area, and the one candidates name as their biggest worry — especially those who don't work to the NEC daily. Wiring methods and installations, hazardous locations, special occupancies, and shock and burns. The difficulty here is rarely the concept; it's finding the provision fast under the exam's reference constraints.

Where points go — The foundation the rest of the exam leans on: three-phase and single-phase circuits, symmetrical components, the per-unit system, phasor diagrams, and DC. Per-unit and symmetrical components are the two that reward genuine fluency rather than a memorized procedure — they show up inside other areas' problems, not just their own.

Where points go — Overcurrent protection, protective relaying, protective devices, and coordination. Candidates consistently report more protection questions than they expected — and it's an area where the reference handbook gives you comparatively little to lean on, so what you know going in matters more here than almost anywhere else.

Where points go — The broadest block: lightning and surge protection, illumination and lighting, energy management and demand calculations, and grounding. It reads like a grab-bag because it is one — which makes it easy to under-prepare, and it's worth as much as any single technical area.

Where points go — Transformers and capacitors alongside the exam's more modern content: electrical energy storage (battery, ultracapacitor), alternative power generation (photovoltaic and wind), and testing. Energy storage is one of the areas the October 2025 specification brought into focus.

Where points go — The network end to end and at every voltage level — high, medium and low. Voltage drop, voltage regulation and support, power factor correction, power quality, fault current analysis, transformer connections, power flow, and system stability. Power factor correction and short-circuit work are where a large share of this exam's genuine calculation questions live.

Where points go — Instrument transformers and metering, insulation testing, and ground resistance testing. A small, discrete, highly learnable block — which makes it some of the cheapest scoring on the exam if you actually cover it, and a quiet loss if you decide it's too small to bother with.

Where points go — Two distinct halves: power electronics — converters, inverter-based resources and variable-frequency drives — and the control side: relays, switches, Boolean and ladder logic. Small, but the inverter-based-resource content reflects where the grid has actually gone.

Where points go — Machine types and applications, and motor starting. Small on paper, and worth a warning: candidates repeatedly describe the machine questions running more mathematical than they had prepared for.