In this episode of “EC&M Tech Talk,” Randy Barnett, a journeyman electrician, inspector, author, trainer, and electrical safety expert, reviews requirements for medium-voltage conductors and cable.

National Electrical Code (NEC) Table 310.104(C) is titled “Conductor Application and Insulation Rated 2,001V or Higher.” For MV solid dielectric cables, there are two basic types of insulation: ...

What is an electrical conductor? An electrical conductor is generally a metallic material that freely conducts electrical current. The best conductor is silver, followed by copper, and then aluminum.

With the increasing frequency of natural disasters including hurricanes, tornadoes, wildfires and winter storms, electric utilities have proactively transitioned overhead lines to underground circuits ...