https://elec.webpenson.com/en/categories/engineering-quick-reference/ Recent content in Engineering Quick Reference on Electrical Toolbox Hugo en-US Sun, 19 Jul 2026 00:00:00 +0000 https://elec.webpenson.com/en/tools/transformer-capacity-selection/ Sun, 19 Jul 2026 00:00:00 +0000 https://elec.webpenson.com/en/tools/transformer-capacity-selection/ Online transformer capacity selection calculator. Enter power kW, power factor cosφ, efficiency η, and load factor β to quickly estimate required transformer kVA capacity. Recommends GB/T 17468 R10 standard ratings. Supports single-equipment / multi-equipment diversity factor / motor starting current correction. For engineering design, factory distribution, and design institute calculation sheets. https://elec.webpenson.com/en/tools/cable-current-carrying-capacity-lookup/ Sat, 18 Jul 2026 21:05:00 +0000 https://elec.webpenson.com/en/tools/cable-current-carrying-capacity-lookup/ Online cable ampacity lookup tool supporting YJV / YJLV / VV / VLV / BVR / BLVR and other cable types. Covers 5 installation methods: free-air, conduit, tray, direct burial, and duct. Automatically applies GB 50217 temperature, grouping, and altitude correction factors. For electrical engineering design, on-site construction, and factory maintenance.