So I recently discovered that these exist. These plugs and connectors have red and green LED's in them. Green indicates properly wired/ground continuity, red led indicates some sort of wiring issue. Now, I've always been a fan of the extension cords with a neon power indicator molded into the female end, as they are useful to keep around as a 'known hot' circuit for tools and testing. A novel idea, however, I'm not really sure I need my entire rig glowing with these. Thoughts? They come in several flavors, not just 5-15.
Extra-Hard Use Ground Continuity Monitoring (GCM) Plug, Black & White, PS5266XGCM | by Legrand
Extra-Hard Use Ground Continuity Monitoring (GCM) Plug, Black & White, PS5266XGCM | by Legrand