Dobór WLZ krok po kroku dla początkujących i nie tylko

How to choose an internal power line cable - WLZ for a single-family house or a single apartment. Step by step I will show the theory, formulas and examples of how to perform calculations. There will also be practical advice. There will be design current, long-term current endurance, voltage drops, automatic power off, and minimum cross-sections. The video is intended for beginners - so there will be simplifications and basics. The topic is extensive and it is impossible to show all aspects in a short film. Remember that design work should be performed by people with appropriate qualifications and authorizations. 0:00 introduction and general information 1:13 Data needed 1:36 Cable selection criteria 1:54 Minimum cross-sections of veins 3:04 Long-term current carrying capacity 3:40 Design current 3:46 Conditions of Connection - source of important data 4:18 Current calculations for one and three phases 4:54 Special cases 5:15 Table with long-term current carrying capacity - for aluminum and copper 5:21 Ways to lay the cable 5:55 Correction factors 6:21 Condition of long-term current withstand 6:33 Practical notes 6:55 Aluminum and copper - cross-sections 7:20 Aluminum and copper - practical differences 7:34 Long-term current withstand - example 1 8:12 PEN and minimum cross-sections 8:30 Long-term current withstand - example 2 9:08 Long-term current withstand - example 3 9:49 Voltage drops 10:36 Voltage drops - old standards 10:52 Condition for automatic switching off of the SWZ power supply 11:22 Main protection without short-circuit element 11:46 Maximum fault loop impedance 12:07 Network impedance and WLZ 12:32 Shutdown voltage 12:45 Condition of automatic power off - check 12:52 Condition not met - what next? 13:39 Plans for the future 13:54 End #science RCD 1F vs 3F and Interrupted Neutral N. Consequences. From scratch.    • Napięcie międzyfazowe, przerwanie N, spale...   Short Circuit Loop Impedance from scratch. What is it, how to measure and interpret it. For beginners.    • Dla początkujących i nie tylko - IPZ od po...   Thin-walled ferrules in practice - how, how and why to crimp ferrules on wires.    • Jak i czym zaciskać, kiedy są potrzebne.   Damaged, drilled wires? How to connect. Bushings and soldering    • 2 sposoby, pod tynk, bez puszki - trwałe p...   Functional and safe switchgear - Design in a free program and labels    • XL-PRO3 i bezpieczna, funkcjonalna rozdzie...   START STOP. How to do it - button control from scratch    • Start/Stop - schematy, działanie, praktyka.   RCD - Residual current circuit breaker - for beginners and more    • Parametry, typy, działanie, podłączenie - RCD   Circuit breakers, fuses, ES - for beginners and more    • Wyłączniki nadprądowe od podstaw - charakt...   __________________________________________________________ 🔔 Subscribe 🔔 👉    / @elektryka-elektronika   __________________________________________________________ I invite you to: 👉 www.naprawa-laptopa.com.pl - over 100 articles about laptop and electronics repairs! 👉 www.smarthomekr.pl - website about electricity and home automation.