The first step in eliminating this confusion is to understand that the nec. Dec 15, 2024the k factor isn't specifically stated in the nec, but wire sizes and their circular mils and resistance are. Using these, you can derive it from the tables in the nec.
Jan 9, 2025does nec allow running multiple 480v 3 phase power load conductors in a single conduit instead of running each 3 phase loads conductors in separate conduits? Jun 25, 2022can i get some verification that i'm interpreting nec correctly here?