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Electrical learning, calculation and circuit tools
Understand the circuit.
Check the numbers.
Learn electrical principles, study clear diagrams, work through practical examples, and use calculation tools with visible assumptions and safety context.
- 9
- Courses
- 280
- Lessons
- 8
- Calculators
- 11
- References
Laboratory photograph · Aldestyo · CC0 public domain dedication · Wikimedia Commons
Platform
Tools for learning and preliminary checks.
One focused workspace for calculation, reference, structured learning, and traceable design checks.
Electrical Calculators
Eight focused calculators show formulas, units, substitutions, and results for direct review.
Reference Guides
Nine practical guides combine concise explanations, deterministic diagrams, safety context, and print views.
Load Analysis & Cable Sizing
Check design current, protective-device coordination, derating, thermal capacity, and voltage drop.
Structured Learning
Nine courses contain 280 structured lessons with worked examples, checks, exercises, sources, and visible review status.
Circuit design workflow
Enter the load once, then check the supply, protective device, cable size and voltage drop. Print the result with its assumptions.
Saved work and reports
Keep calculation history on this device and print a clear record of each calculation or design check.
Who it's for
From classroom to
construction site.
Choose the view that matches your work. The same formulas, diagrams and references remain available throughout.
Students
Learn the method. Check your answer.
- →Work through Ohm's law, power, series and parallel circuits, and Kirchhoff's laws from first principles. Each calculator shows its working.
- →Follow structured courses from fundamentals to three-phase and cable sizing, each with worked examples and self-marking quizzes.
- →Enter your own values and compare your method with the displayed calculation steps.
- →Practise with supplied examples that reflect common electrical scenarios while keeping assumptions visible.
Accuracy & method
Calculations you can check.
Every result includes the method and assumptions needed to check it. Confirm the final design against the applicable regulations and product data.
Standard formulas, shown
Each calculator shows the formula, substituted values and result. You can inspect the working before using it.
Limits flagged, not assumed
Voltage drop results show the applied limit. Confirm that limit against the circuit type and the regulations that apply to the installation.
An aid, not a substitute
ElectraCore supports your working; it doesn't replace a qualified design or inspection. Verify every result against the wiring regulations for your installation before you rely on it.
Free to use. No account needed.
Every calculator, guide, and course is open access. Saved calculations and learning progress remain on this device.
Access
The complete platform is open.
Use all calculators, guides, courses, and design tools without an account or checkout.
Calculate
Eight calculators with units, visible working, saved history, and printable results.
Open calculatorsLearn
Nine courses and 280 structured lessons with checks, exercises, sources, visible review status, and device-local progress.
Browse coursesDesign
A connected preliminary workflow for load current, protection, cable capacity, and voltage drop.
Open designer