NEW YORK--(BUSINESS WIRE)--Fitch Ratings has assigned an 'A+' rating to Southern California Edison's (SCE) aggregate $1.3 billion offering of first and refunding mortgage bonds (FMBs). Proceeds from the offering will be used to finance construction expenditures, refund approximately $400 million of outstanding debt and for general corporate purposes. The Rating Outlook for SCE is Stable. KEY RATING DRIVERS --SCE's strong consolidated credit metrics; --Strong and relatively predictable utility e