NEW YORK--(BUSINESS WIRE)--Fitch Ratings has assigned a 'BBB+' rating to Southern California Edison Company's (SCE) SCE Trust IV fixed-to-floating trust preference securities. The preference securities are subordinated to SCE's senior debt. Proceeds to SCE will be used to repay the series A preference shares and for general corporate purposes. The Rating Outlook is Stable. KEY RATING DRIVERS SCE's ratings and Stable Outlook reflect the utility's relatively predictable earnings and cash flows, l