WEMC's circuit breakers are configured to reset automatically. This keeps long term outages from happening when temporary problems occur, like tree branches touching a line. The distribution system begins at the substation and ends at the service entrance of the home or business.
Main circuits leave the substations and branch out to taps and service wires.
Another good description of main circuit is trunk line. Used in heavily populated areas or to supply large commercial loads. A distribution transformer lowers line voltage from 14,400 to 240 volts before the electricity enters a home or business. All content and images are property of Walton EMC and may not be duplicated without express written consent.