What is the Coefficient of Continuity

What is the Coefficient of Continuity? - It's Not That Hard
Tim built custom homes and did ultra-custom remodeling for 20+ years before launching his Ask the Builder media presence. He was selected as one of the Big 50 by Remodeling magazine in 1993. This award gave birth to Ask the Builder in October 1993. Tim also operates https://DrawPlumbingPlans.com. His @askthebuilder YouTube channel was the first home improvement channel on YouTube.
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Solid wire?
12 or 14 AWG?
Wire nuts?
I rewired my first floor and basement 2 years ago when we remodeled our kitchen, and am now preparing to rewire my upper floor. I ran a 1/0 MC cable from the 225A main to the 125A basement sub, using 10AWG stranded MC cable for all outlets, fixtures, etc. For my upper floor I am running a #4 85amp to a 225A sub, 54 space Cutler Hammer copper bus. I will rewire the upper floor with #8 AWG, 4 outlets to a circuit. All outlets and switches are 20A, metal boxes, Ideal copper splice conductors, Burndy split bolt connectors for the junction box wire connections. I have photos, if your like.
Real men don't use romex.
I'm obviously a girly man.
Color is the coefficient of continuity.
picture is a 6 gang light switch.