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BASIC ELECTRICAL CALCULATIONS EVERY ELECTRICIAN MUST KNOW.

Clear understanding of electrical calculations is the foundation of safe and efficient electrical work. Here’s a quick reference covering the most commonly used formulas in day-to-day practice 👇

🔹 Single Phase Power Calculation
Power = V × I
Used in domestic & light commercial circuits

🔹 Three Phase Power Calculation
Power = √3 × V × I × PF
Essential for industrial loads and motors
🔹 Motor Current Calculation
Helps in proper selection of cables, MCB/MCCB, contactors & overload relays
🔹 Star & Delta Connection Basics
Star connection → reduced current & voltage
Delta connection → full load operation
Critical for understanding motor starting methods

📌 Perfect for electricians, diploma/degree engineers, maintenance staff, and students preparing for technical exams or site work.
💡 Save this post for quick revision and practical reference.

👍👍👉 Julitech Electrical Engineering

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Electrical Engineering