Selectivity of overcurrent protection from the basics, i.e. what selectivity is, why to use it, why it is so important, how to maintain it and how it works in practice. How to read characteristics and choose protection measures to be selective.
Links:
Circuit breakers, fuses, ES - for beginners and more https://www.youtube.com/watch?v=_BzNNUNxu4o
Short Circuit Loop Impedance from scratch. What is it, how to measure and interpret it. For beginners. https://www.youtube.com/watch?v=fnefDNVg3o0
see also:
How to choose a WLZ cable. From scratch, step by step, for beginners - tables, calculations, formulas** https://www.youtube.com/watch?v=dUbBmMzDCTg
RCD 1F vs 3F and Interrupted Neutral N. Consequences. From scratch. https://youtu.be/03mT52osxfg
Thin-walled ferrules in practice - how, how and why to crimp ferrules on wires. https://www.youtube.com/watch?v=3UO48W9LOd8
Damaged, drilled wires? How to connect. Bushings and soldering https://www.youtube.com/watch?v=tz23sz5EOCY
Functional and safe switchgear - Design in a free program and labels https://www.youtube.com/watch?v=L6Fcv_-cB6g
START STOP. How to do it - button control from scratch https://www.youtube.com/watch?v=RGu1ZWmyZTM
RCD - Residual current circuit breaker - for beginners and more https://www.youtube.com/watch?v=qXdOCvy16ig
Circuit breakers, fuses, ES - for beginners and more https://www.youtube.com/watch?v=_BzNNUNxu4o
Short Circuit Loop Impedance from scratch. What is it, how to measure and interpret it. For beginners. https://www.youtube.com/watch?v=fnefDNVg3o0
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