As we saw in Part 1, the correct sizing of conductors is more complicated than it appears. One of the reasons is the way temperature affects the resistance of a conductor. Higher temperatures mean ...

Article 215 covers the installation, conductor sizing, and overcurrent protection requirements for feeder conductors. The requirements for feeders have some similarities to those for branch circuits.

My first job in the trades was as an electrician’s apprentice doing tasks, such as pulling wire, building light fixtures, and moving scaffolding in grocery store renovations. I moved into HVACR and ...