🏗️ Concrete 🎨 Painting ⚡ Electrical 🔧 Plumbing 🏠 Flooring 🛖 Roofing 🧱 Masonry ⛏️ Excavation 💡 Ceiling 🪨 Gravel 🏜 Sand 🪜 Stairs ⬜ Drywall 🚧 Fence 🔩 Rebar 🪓 Lumber 🌡 Insulation 🪵 Decking 🟧 Pavers 💨 HVAC 🚰 Water Tank 🐜 Anti-Termite 🪟 Shuttering 🚚 Backfill 🖌 Plastering 💧 Waterproofing 🌿 Landscaping ☀️ Solar Panel 🚽 Septic Tank 🏛 Beam/Column ✂ Tile Cutting 🔨 Wall Framing 📐 Rafter Length 🪚 Board Foot 🧶 Carpet 📜 Wallpaper 🛣️ Asphalt 🍂 Mulch 🪴 Topsoil 🌱 Sod & Turf ⬛ Block Wall

📋 Bill of Quantities 🔄 Unit Converter 📐 Feet-Inch Calc 🏷️ Price Library 💾 Saved Calculations

⚡ Electrical Blog

⚡ Electrical Guides & How-Tos

Every article below solves one real job with real numbers — then hands you to the calculator to run your exact dimensions.

4 guides

🧮 Electrical · Open calculator 📖 All Guides

Berapa ukuran kabel untuk sirkuit cabang 20A?

Tembaga 12 AWG pada 20A: ampacity, aturan beban kontinu 80%, dan kapan menaikkan.

Susut tegangan pada 100 kaki: atasi dengan menaikkan

Rumus 2KIL/CM untuk 100 kaki pada 120V, aturan, dan ambang 60 kaki.

Berapa kabel muat di conduit PVC 3/4"?

Aturan isi 40%: luas THHN per ukuran, derating, dan kapan menaikkan.

Apakah panel 200A saya kelebihan beban? Hitung

Beban 80A existing plus sirkuit baru vs layanan 200A, faktor kebutuhan.

More tool blogs

Worked guides grouped by calculator — pick your trade.

🏗️ Concrete 🎨 Painting 🔧 Plumbing 🏠 Flooring 🛖 Roofing 🧱 Masonry ⛏️ Excavation 💡 Ceiling 🪨 Gravel 🏜 Sand 🪜 Stairs ⬜ Drywall 🚧 Fence 🔩 Rebar 🪓 Lumber 🌡 Insulation 🪵 Decking 🟧 Pavers 💨 HVAC 🚰 Water Tank 🐜 Anti-Termite 🪟 Shuttering 🚚 Backfill 🖌 Plastering 💧 Waterproofing 🌿 Landscaping ☀️ Solar Panel 🚽 Septic Tank 🏛 Beam/Column ✂ Tile Cutting 🔨 Wall Framing 📐 Rafter Length 🪚 Board Foot 🧶 Carpet 📜 Wallpaper 🛣️ Asphalt 🍂 Mulch 🪴 Topsoil 🌱 Sod & Turf ⬛ Block Wall