Double tapping of breakers seems verboten, yet after looking at a breaker yesterday I noticed that it will easily take two wires. Why is that? Do some jurisdictions allow two wires on the breaker? [I found that when I popped the panel off; right after my home inspection the PO had a radon system installed, and yep, they ran a second wire to a breaker. I'm ignoring for now, but know that I should fix some day.] I put in some new outlets. Why is that they give you two sets of screws for hot and neutral, so you can daisy chain, but only one ground screw? I used up some of the fancy ground wire nuts I had (ok not fancy at all--it's just a nut with a hole in it) and then on the last one I remembered I had some Wago's that I'd rather use. I must have gotten the mid range outlets, despite having clamps for hot and neutral, the ground side was just a screw--maybe I just didn't pay enough. Labeling wires every so feet ought to be a law... as is installing a chaseway from basement to attic!