Well, I guess in your infinite wisdom and experience I am not sensible or experienced enough to see the obvious. So sorry sir.
I was not being a jerk, I was simply pointing out a typing error.
You on the other hand are very good at the "polite insults", aren't you?
I am also not experienced enough to determine that "a number of 14 and 12 ga thhn wires, and a pair of 10ga"
mean 20 or more, or 6 or more.
If this were a 50's home with an old 100A service this could have been the latter.
Originally Posted by triple D
So how does the number 9 for ccc count get involved in this?
See post #8. It explains it quite clearly.
Ten CCCs is the difference between a 70% derating and a 50% derating.
This is also the breaking point at which a 14, 12 or 10 THHN conductor must be derated below it's "standard" rating.
So when working with #14, #12 and #10, by staying at nine CCCs or less you avoid any derating issues with regard to conduit fill.
See how much fun this can be Voltohm?