Electrical signal and control wiring

There is much to be said for neatness of assembly in electrical signal wiring. Even though the
electrons don’t “care” how neatly the wires are laid in place, human beings who must maintain the
system certainly do. Not only are neat installations easier to navigate and troubleshoot, but they
tend to inspire a similar standard of neatness when alterations are made.
Here we see 120 volt AC power distribution wiring. Note how the hoop-shaped “jumper” wires
are all cut to (nearly) the same length, and how each of the wire labels is oriented such that the
printing is easy to read:

This next photograph shows a great way to terminate multi-conductor signal cable to terminal
blocks. Each of the pairs was twisted together using a hand drill set to very slow speed. Note how
the end of the cable is wrapped in a short section of heat-shrink tubing for a neat appearance: