Today’s LiveWire Spotlight examines the initial Phase II NERC Glossary term – which has been modified as directed in FERC Order 773 and recently affirmed in Order 773-A. This version disallows the use of the radial exclusion (E1) if a low-voltage loop exists that connects two local systems – each with its own BES connection. The local network exclusion (E3) must be applied instead.

The initial draft of the Definition of the BES (Phase II) has been posted on the NERC website for a 45 day review and concurrent ballot. Comments must be returned and ballots submitted to the project team by July 12, 2013.