Topic

mains wiring

4 videos. Ranked by independent recommendations, not by views.

1. 

   1 The cheap Chinese bulb that won't turn off

   Steve Mould 7 people · 7 months · since Jan 2020

   Explains why cheap LED bulbs glow faintly when switched off, tracing it to capacitive coupling in long cable runs; it explains the cause but offers no fix.

2. 

   2 The US electrical system is not 120V

   Technology Connections 3 people · 7 months · since Jun 2020

   Referenced for a detailed look at how American service panels are laid out and why 208 and 240 volt supplies differ.

3. 

   3 Electronically controlled LED lamps glowing when off.

   bigclivedotcom 4 people · 4 months · since May 2016

   Big Clive explaining why LED bulbs glow or flicker faintly when switched off, linked whenever leakage current through a dimmer or switch puzzles someone.

4. 

   4 Grounding - Safety Fundamentals (1hr:13min:19sec)

   MikeHoltNEC 3 people · 4 months · since Nov 2018

   A lengthy but widely cited explanation of why mains grounding works and how it clears faults, recommended for anyone confused about earth connections.