Power Delivery Engineering, from an Engineer Who Designs It
Practical guides, calculators and reference files for substation design, power line design and power system studies, written by a Registered Electrical Engineer working at a Philippine distribution utility.
Substation Design, Power Lines and Power System Studies
The work I’ve done on the job, written up so you can apply it on yours: the formulas, the shortcuts and the checks that matter.
🗼Power Line Design
Sag and tension, conductor behavior, clearances and the calculators to check them.
- Sag and tension formulas, a working cheat sheet
- Catenary equations in sag and tension
- The EPE sag-tension method
- Step-by-step SPE iteration
🏭Substation Design
First guides coming soonFrom six years designing distribution substations: transformer upgrades, breaker additions and equipment specs.
- Sizing a substation transformer upgrade
- Adding a 69 kV or 138 kV breaker bay
- Writing substation equipment specifications
📈Power System Studies
First guides coming soonLoad flow and loss studies on real distribution feeders, and what the numbers tell you.
- Estimating technical loss on a feeder
- Load flow and voltage drop checks
- Fault levels and protection basics
Reviewing for the REE? Practice with a 10th placer’s question bank.
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Free Calculators and Reference Files
Many of these started as tools I built at work to speed up design.
🧮Sag-Tension Calculators
🏗️Construction Estimates
📚Engineering Resources
- A library of engineering reference files: PDFs, spreadsheets and templates
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Hi, I’m Jared Cuchapin, REE
I’m a Registered Electrical Engineer working at a Philippine distribution utility. My work has covered power line and steel pole design, substation design, and now system loss reduction, where load flow and loss studies are part of the job. EngineeringStuffs is where I write down what I’ve learned, and share the tools I built along the way.
Build better lines and substations, and pass the board
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