#fuseworks

"💥 THAT TINY GLASS TUBE IS A SACRIFICIAL BODYGUARD. Episode 7 of 'Physics in Day to Day Life' rips open a fuse and shows why it blows on purpose: a calibrated strip—usually a tin-lead alloy with a low melting point—is designed with just enough resistance to stay cool at its rated current. When you overload the circuit (too many devices) or a short dumps a huge surge, Joule heating ( $H = I^2 R t$) spikes—the heat is proportional to current squared, so a 3× overcurrent makes ∼9× the heat. Temperature rockets past the alloy’s melting point, the element liquifies, an arc flashes as it parts, and the filler (sand/silica) quenches that arc so the circuit opens in milliseconds, long before your wall wiring or laptop cooks. Save this before the next trip. Tag the flatmate who builds extension-cord skyscrapers. 👇 #reels #trending #viral #instagood #PhysicsInEverydayLife FuseExplained JoulesLaw I2Rt ElectricalSafety CircuitProtection TimeCurrentCurve BreakingCapacity HowItWorks LearnOnReels ScienceShorts FYP" [PHYSICS, SCIENCE, STUDY, LEARNING, VIRAL, TRENDING EXPLORE, REEL, STUDENTS, TEACHER , JEE , NEET, EDUCATION, FUSE, APESYLON, HEAT, KNOWLEDGE]

#electrical_engineer_0612 A surge arrester (also called a lightning arrester) is an electrical device used to protect electrical equipment from voltage spikes (surges), such as those caused by lightning or switching operations. ⚡ What it does (simple idea) When a sudden high voltage appears in a power line, the surge arrester: Diverts the extra voltage safely to the ground Prevents damage to devices like transformers, appliances, and wiring 🔧 How it works Under normal conditions → it acts like an insulator (no current flows through it) During a surge → it becomes a conductor, allowing excess current to flow to earth After the surge → it returns to insulating state 🧱 Basic Concept Illustration 🏠 Where it is used Power transmission lines Substations Industrial electrical systems Homes (in the form of surge protectors) ⚙️ Types of Surge Arresters Rod gap arrester Horn gap arrester Valve type arrester Metal Oxide (MOV) arrester (most common today) 🛡️ Why it is important Without a surge arrester: Equipment can burn out Systems may fail suddenly Fire risk increases ⚠️

Here is a clear, site-level engineering procedure to check a motor using a Megger (Insulation Resistance Tester): 🔧 Motor Insulation Test Using Megger 🔹 1. Isolation (Very Critical) Before testing: Switch OFF supply Lockout/Tagout (LOTO if available) Disconnect motor cables from panel Ensure no backfeed (VFD, capacitor, etc.) ⚠️ Never megger a live or connected motor. 🔹 2. Select Correct Megger Voltage Motor Rating Test Voltage Up to 440 V ---500 V DC 440 V – 3.3 kV----1000 V DC Above 3.3 kV-----2.5 kV / 5 kV 🔹 3. Phase to Earth Test (Most Important) Connection: Megger + (Red) → Motor terminal (U / V / W) Megger – (Black) → Motor body (Earth) Test: Press TEST button for ~1 minute Note insulation resistance value 👉 Repeat for: U → Earth V → Earth W → Earth 🔹 4. Phase to Phase Test Test between windings: U ↔ V V ↔ W U ↔ W Same procedure (press test and record values) 🔹 5. Acceptable Insulation Values IR Value Condition < 1 MΩ --Poor (Do not use) 1 – 5 MΩ ---Marginal > 5 MΩ. ------Good > 100 MΩ----- Excellent 👉 Practical rule (site engineers use): Minimum IR = 1 MΩ per kV + 1 MΩ 🔹 6. Important Precautions Motor should be dry and clean Do not touch terminals during test ⚡ After test → Discharge winding to earth (very important) For critical motors → take PI test (Polarization Index) 🔹 7. Advanced Check (Optional but Professional) Polarization Index (PI Test) PI < 1 → Bad insulation PI 1–2 → Acceptable PI > 2 → Good 🔍 Practical Example If a 415V motor shows: U-E = 12 MΩ V-E = 10 MΩ W-E = 11 MΩ ✅ Motor is healthy and safe to energy #electrician #highlight #electrical #iti

#electrical #engineering #stem #education

Resistor getting hot? You’re doing this wrong If your resistor is heating up, it means excess current is flowing or the power rating is too low ⚡ Always select the correct resistor value and power rating to keep your circuit safe and stable 🔧 Follow EPIR Tech for simple electronics tips and real problem-solving content 🔥 #Electronics #Resistor #CircuitDesign #ElectricalEngineering #DIYElectronics EngineeringStudents TechEducation LearnElectronics EPIRTech 🔥

Did you know that many devices like electric irons, heaters, mixer grinders, and SMPS have a hidden safety component that protects them from overheating? 😳 In Day 75 of Daily Dose of Electronics, we explore the Thermal Protector Switch (Temperature Protection Switch) — a small but extremely important component that automatically cuts off power when the temperature becomes too high. Inside this device is a bimetal strip that bends when heated. As soon as the temperature crosses a specific limit (for example 80°C–90°C), the strip bends and disconnects the circuit, preventing the device from burning or getting damaged. 🔥⚡ We also compare it with a standard fuse, and you'll learn why a thermal protector adds an extra layer of safety in many appliances. In this video you will learn: • What is a Thermal Protector Switch • How the bimetal strip mechanism works • Difference between Thermal Fuse and Auto-Reset Thermal Switch • Why it is better than a normal fuse in some cases • Where it is used in real devices Common Applications: ✔ Electric Iron ✔ Immersion Rod ✔ Room Heater ✔ Fan Motor ✔ SMPS (Power Supply) ✔ Mixer Grinder If you love learning Electronics, IoT, Microcontrollers, and Real-World Components, make sure to follow this Daily Dose of Electronics series on JagsTech. 🚀 #JagsTech #DailyDoseOfElectronics #ThermalSwitch #ThermalProtector #ElectronicsBasics ElectronicsEngineering TemperatureSensor BimetalStrip ElectronicsLearning HowElectronicsWork ElectricalSafety EngineeringFacts ElectronicsProjects ElectronicsForBeginners TechEducation ⚡

Active vs Passive components, what’s the real difference? Active components need external power and can amplify or control signals, while passive components store, resist, or filter energy without amplification. Master this basic concept to build a strong foundation in electronics. ⚡ #ActiveComponents #PassiveComponents #ElectronicsBasics #BasicElectronics #ElectricalEngineering

Electric Current & Circuits made SUPER EASY ⚡📚 No confusion ❌ No complicated theory ❌ Just simple notes + clear understanding = full marks 💯 If you ever struggled with circuits, this video will change everything 🔥 Study smart. Learn fast. Win big 🚀 Save this now & revise anytime! 💡 #ElectricCurrent #CircuitsMadeEasy #PhysicsSimplified #ScienceNotes #StudySmart

Basic Electrical Circuit | Electronics Fundamentals ⚡#physics #science #tech #techstack #electronics

Do you know the difference between Active & Passive Components? 🤔⚡ Most students confuse this — but it's actually SUPER simple! 👉 Active = Controls current 👉 Passive = Just stores or resists energy 💡 Save this post for revision 📌 Follow for more science content @learnsciencewithdeepika

Many people think only amperage is dangerous. But without enough voltage, current can’t even pass through the skin. ⚡ Simple rule: Voltage pushes the current, and current causes the damage. That’s why even 30 mA (0.03 A) can be dangerous. 🔖 Save this for later 💬 Did you know this about voltage and current? #ElectricalSafety #VoltageVsCurrent #ElectricityBasics #ElectricalEngineering #ElectricalTips #SafetyFirst #ElectricityEducation

Not all components just pass electricity… some store it. ⚡ A capacitor stores electrical energy and releases it when needed — making it essential in filters, power supplies, and electronic circuits. From chargers to power electronics, capacitors are everywhere. #capacitor #electronics #electricalengineering #powerelectronics #engineeringstudents . . . . . . Save this reel for revision 📌 Follow @power4all for simple Power Electronics concepts. 👉 Comment CAPACITOR if you understood this concept.