NEW YORK--(BUSINESS WIRE)--Fitch Ratings has assigned an 'A' rating to PacifiCorp's (PPW; IDR 'BBB+'; Outlook Positive) offering of first mortgage bonds (FMB). Proceeds will be used to repay short-term debt and for general corporate purposes. The notes will rank equally and ratably with all other debt issued under the mortgage. PPW's Rating Outlook is Positive. KEY RATING DRIVERS --Improving credit metrics; --Balanced rate treatment diversified across six state regulatory jurisdictions; --Manag