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Power factor calculation

John Smith Blogger on March 09, 2014

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Electronics & Electrical Engineering

John Smith Blogger on March 05, 2014

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Medium Voltage Design Guide (Schneider Electric)

John Smith Blogger on March 04, 2014

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Low voltage switches

John Smith Blogger on February 27, 2014

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LV Switchgear Functions & Selection

John Smith Blogger on February 27, 2014

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Handbook of Electrical Installation Practice

John Smith Blogger on February 27, 2014

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System Design for Control of Electrical Noise

John Smith Blogger on February 25, 2014

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Why Does Graphite Conduct Electricity? The Surprising Science Explained

Why Does Graphite Conduct Electricity? Graphite is one of those fascinating materials that seems to defy expectations. Unlike most non-metals, it conducts electricity something we usually associate with metals like copper or silver. But why? Let’s dive into the science behind graphite’s electrical conductivity and explore why this everyday material is so special. The Unique Structure of Graphite What Makes Graphite Different? Graphite is made up of carbon atoms arranged in layers. Each layer consists of hexagonal rings, much like a honeycomb. These layers are called graphene sheets, and they’re only weakly bonded to each other, which is why graphite feels slippery (it’s often used in pencils!). But here’s the key: within each graphene sheet, carbon atoms share delocalized electrons. These electrons are free to move, allowing electricity to flow similar to how electrons move in metals. Why Don’t Other Forms of Carbon Conduct Electricity? Not all carbon-based materials conduct elec...

Does Lead Conduct Electricity? The Surprising Truth

Does Lead Conduct Electricity? A Deep Dive Into Its Conductivity If you've ever wondered, "Does lead conduct electricity?", you're not alone. Lead is a fascinating metal with unique properties that make it useful in various industries, from batteries to construction. But how well does it actually conduct electricity? Let’s explore the science behind lead’s electrical conductivity and where it stands compared to other metals. How Well Does Lead Conduct Electricity ? Lead does conduct electricity, but not as effectively as metals like copper or silver. Its conductivity is relatively low compared to other conductive metals, which is why it isn’t typically used in high-performance electrical wiring. Lead’s Electrical Conductivity in Numbers Electrical Conductivity: ~4.55 × 10⁶ S/m (Siemens per meter) Resistivity: ~22 × 10⁻⁸ Ω·m (Ohm-meters) Comparison: Copper has a conductivity of ~59.6 × 10⁶ S/m, making it about 13 times more conductive than lead. These numbers show th...

When Was Electricity First Used in Homes? The Shocking History

The Dawn of Electric Light: When Was Electricity First Used in Homes? Electricity is something we take for granted today, but there was a time when homes relied on candles, oil lamps, and gaslight. So, when was electricity first used in homes? The answer takes us back to the late 19th century, a time of innovation and bold experiments that forever changed how we live. In this article, we’ll explore the fascinating journey of residential electricity—from its earliest experiments to the moment it became a household necessity. The First Homes to Use Electricity The Early Experiments (1870s-1880s) Before electricity became widespread, inventors like Thomas Edison and Nikola Tesla were hard at work. Edison’s Pearl Street Station in New York City (1882) was the first commercial power plant, supplying electricity to a handful of wealthy homes and businesses. These early adopters enjoyed electric lighting, a luxury that replaced sooty gas lamps and fire hazards. However, most Americans w...

Free Electricity After 9 PM: The Secret to Slashing Your Power Bill

Introduction Did you know some utility companies offer free electricity after 9 PM? If you’re tired of high energy bills, shifting your power usage to off-peak hours could save you big. Many energy providers in the USA encourage customers to use electricity during low-demand times—sometimes even offering free or heavily discounted rates late at night. In this guide, we’ll explore how you can take advantage of free electricity after 9 PM, which programs are available, and smart home strategies to maximize savings. Why Some Homes Get Free Electricity After 9 PM 1. Time-of-Use (TOU) Plans Reward Off-Peak Usage Many utility companies offer Time-of-Use (TOU) plans, where electricity costs vary by time of day. Since demand drops significantly after 9 PM, some providers offer free or ultra-low rates to incentivize nighttime usage. 2. Renewable Energy Surplus At night, wind energy production often exceeds demand. Some states pass these savings to consumers through free or reduced-rate electric...

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This article was originally published on Electrical Library—your go-to resource for energy-saving tips, home efficiency guides, and smart ways to reduce electricity costs.