Exhibit 4.5-B CERTIFICATE OF TRUST OF DUKE CAPITAL FINANCING TRUST IV THIS Certificate of Trust of Duke Capital Financing Trust IV (the "Trust"), dated as of September 25, 1998, is being duly executed and filed by the undersigned, as trustee, to form a business trust under the Delaware Business Trust Act (12 Del. C. (S) 3801, et seq.). ------- -- --- 1. Name. The name of the business trust formed hereby is Duke ---- Capital Financing Trust IV. 2. Delaware Trustee. The name and business address of the trustee of ---------------- the Trust with a principal place of business in the State of Delaware are Chase Manhattan Bank Delaware, 1201 Market Street, Wilmington, Delaware 19801. 3. Effective Date. This Certificate of Trust shall be effective upon -------------- filing. IN WITNESS WHEREOF, the undersigned, being the sole trustee of the Trust, has executed this Certificate of Trust as of the date first-above written. CHASE MANHATTAN BANK DELAWARE, not in its individual capacity but solely as trustee of the Trust By: /s/ Denis Kelly ---------------------------- Name: Denis Kelly Title: Trust Officer