CORRECTED: Breaker Glitch Prompts NERC Warning

[EDITOR'S NOTE: This story originally contained numerous factual inaccuracies that have since been corrected as of Dec. 2, 2020. These included referring to sulfur hexafluoride (SF6) as "sodium hexafluoride"; stating that mixed-gas breakers must be operated at a higher pressure than those using pure SF6; and stating that NERC recommended...