I once read a great article explaining why we use polarized plugs, grounding, and GFCI outlets in household AC circuits. It was written from the perspective of an electric company whose customers keep getting electrocuted by their appliances. The company introduces the safety measures one by one and the article explains how people still get shocked. It might even have been a comment on Metafilter; I'm not sure. Where can I find it?
Help me understand the national electric code with regard to rewiring and updating several rooms in my 1940s-era house. [more inside]
How the heck is this outlet 'grounded'? [more inside]
Grounding my old Marantz stereo amp in a two-prong outlet? (We're talking American 110v.) [more inside]
I have an old house with old wiring in the walls. The question inside is about installing window air conditioners. [more inside]