WHITE = 14-gauge wire, 15-amp circuit YELLOW = 12-gauge ... Audio cable This is a power-limited circuit and communications cable for whole-house audio systems. It’s approved for in-wall use.

These days, if you wire your house with anything less than gigabit, you might end up throttling your Internet connection. If you wired things up using two pairs per device back in 100BASE-T days, ...

I spent much of my time bending pipe and pulling metal-clad cable through cavernous ceiling expanses in hospitals, dorms and even a sports stadium. I had almost no experience with house wiring.