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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                  SCHEDULE 13G

                    UNDER THE SECURITIES EXCHANGE ACT OF 1934

                                 (RULE 13d-102)

                 INFORMATION TO BE INCLUDED IN STATEMENTS FILED
          PURSUANT TO RULE 13d-1(b), (c) AND (d) AND AMENDMENTS THERETO
                         FILED PURSUANT TO RULE 13D-2(b)

                               (AMENDMENT NO. 1)*

                               Wesco International

- --------------------------------------------------------------------------------
                                (Name of Issuer)

                          Common Stock, $0.01 par value
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    95082P105
          -------------------------------------------------------------
                                 (CUSIP Number)

                                 January 1, 2003
- --------------------------------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate  the rule pursuant to which this Schedule
is filed:

     |_| Rule 13d-1(b)

     |X| Rule 13d-1(c)

     |_| Rule 13d-1(d)

         * The  remainder of this cover page shall be filled out for a reporting
 person's  initial  filing on this form with  respect  to the  subject  class of
 securities, and for any subsequent amendment containing information which would
 alter the disclosures provided in a prior cover page.

         The information  required in the remainder of this cover page shall not
 be deemed  to be  "filed"  for the  purpose  of  Section  18 of the  Securities
 Exchange Act of 1934 ("Act") or otherwise  subject to the  liabilities  of that
 section  of the Act but shall be  subject  to all other  provisions  of the Act
 (however, see the Notes).





POTENTIAL PERSONS WHO ARE TO RESPOND TO THE COLLECTION OF INFORMATION  CONTAINED
IN THIS FORM ARE NOT  REQUIRED TO RESPOND  UNLESS THE FORM  DISPLAYS A CURRENTLY
VALID OMB CONTROL NUMBER.

SEC 1745 (3-98)

SCHEDULE 13G ISSUER: Wesco International CUSIP NO.: 95082P105 - -------------------------------------------------------------------------------- 1. Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only). J.P. Morgan Partners (BHCA), L.P. (formerly known as Chase Equity Associates, L.P.) ........................................................................ 13-3371826 - -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group (See Instructions) (a) (b) - -------------------------------------------------------------------------------- 3. SEC Use Only - -------------------------------------------------------------------------------- 4. Citizenship or Place of Organization Delaware - -------------------------------------------------------------------------------- 5. Sole Voting Power 4,653,131 -------------------------------------------------------- Number of Shares 6. Shared Voting Power Beneficially Owned -------------------------------------------------------- by Each Reporting 7. Sole Dispositive Power 4,653,131 Person With: -------------------------------------------------------- 8. Shared Dispositive Power - -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person 4,653,131 - -------------------------------------------------------------------------------- 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) - -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row (9) 11.5% - -------------------------------------------------------------------------------- 12. Type of Reporting Person (See Instructions) - -------------------------------------------------------------------------------- PN ................................................................................. ................................................................................. ................................................................................. ................................................................................. ................................................................................. ................................................................................. - -------------------------------------------------------------------------------- SEC 1745 (3-98)

SCHEDULE 13G ISSUER: Wesco International CUSIP NO.: 95082P105 PRELIMINARY NOTE: This Schedule 13G is being filed to reflect a change in the controlling persons of the Reporting Person. ITEM 1. (A) NAME OF ISSUER: Wesco International (B) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES: Commerce Court Four Station Square Suite 700 ITEM 2. (A) NAME OF PERSON FILING: J.P. Morgan Partners (BHCA), L.P. Supplemental information relating to the ownership and control of the person filing this statement is included in Exhibit 2(a) attached hereto. (B) ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE: 1221 Avenue of the Americas New York, New York 10020 (C) CITIZENSHIP: Delaware (D) TITLE OF CLASS OF SECURITIES (OF ISSUER): Common Stock, par value $0.01 per share (E) CUSIP NUMBER: 95082P105 ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TOSS.SS. 240. 13d-1(b) OR 240. 13d-2(b) OR (c), CHECK WHETHER THE PERSON FILING IS A: Not applicable. ITEM 4. OWNERSHIP (A) AMOUNT BENEFICIALLY OWNED: 4,653,131 shares of Common Stock (B) PERCENT OF CLASS: 11.5% (as of December 31, 2002). SEC 1745 (3-98)

SCHEDULE 13G ISSUER: Wesco International CUSIP NO.: 95082P105 (C) NUMBER OF SHARES AS TO WHICH SUCH PERSON HAS: (i) Sole power to vote or to direct the vote: 4,653,131 shares of Common Stock (ii) Shared power to vote or to direct the vote: Not applicable. (iii) Sole power to dispose or to direct the disposition of: 4,653,131 shares of Common (iv) Shared power to dispose or to direct the disposition of: Not applicable. ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS Not applicable. ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON Not applicable. ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY Not applicable. ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP Not applicable. ITEM 9. NOTICE OF DISSOLUTION OF GROUP Not applicable. ITEM 10. CERTIFICATION (a) Not applicable. (b) By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. SEC 1745 (3-98)

SCHEDULE 13G ISSUER: Wesco International CUSIP NO.: 95082P105 SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Date: February 13, 2003 J.P. MORGAN PARTNERS (BHCA), L.P. By: JPMP Master Fund Manager, L.P., its General Partner By: JPMP Capital Corp., its General Partner By: /s/ JEFFREY C. WALKER --------------------------------------- Name: Jeffrey C. Walker Title: President SEC 1745 (3-98)

                                  SCHEDULE 13G

ISSUER:  Wesco International                               CUSIP NO.:  95082P105


                                  EXHIBIT 2(a)

                  This statement is being filed by J.P. Morgan Partners  (BHCA),
L.P.  (formerly  known as Chase Equity  Associates,  L.P.),  a Delaware  limited
partnership (hereinafter referred to as "JPMP (BHCA)"), whose principal business
office is located at 1221 Avenue of the Americas, New York, New York 10020. JPMP
(BHCA) is engaged in the venture  capital and  leveraged  buyout  business.  The
general partner of JPMP (BHCA) is JPMP Master Fund Manager, L.P. (formerly known
as Chase Capital Partners, a New York general  partnership),  a Delaware limited
partnership  (hereinafter  referred to as "JPMP Master Fund"),  whose  principal
business  office is located  at the same  address  as JPMP  (BHCA),  and is also
directly or indirectly  (through  affiliates) engaged in the venture capital and
leveraged  buyout  business.  The  general  partner of JPMP  Master Fund is JPMP
Capital  Corp.  (formerly  known  as  Chase  Capital  Corporation),  a New  York
corporation  (hereinafter referred to as "JPMP Capital Corp."),  whose principal
business  office is located  at the same  address  as JPMP  (BHCA),  and is also
engaged in the  venture  capital and  leveraged  buyout  business.  Set forth in
Schedule A hereto and incorporated  herein by reference are the names,  business
addresses,  principal  occupations and employments of each executive officer and
director of JPMP Capital Corp.

                  JPMP Capital Corp. is a wholly owned subsidiary of J.P. Morgan
Chase & Co.  (formerly  known as The Chase  Manhattan  Corporation),  a Delaware
corporation  (hereinafter  referred  to as "JP Morgan  Chase")  which is engaged
(primarily  through  subsidiaries)  in the commercial  banking business with its
principal office located at 270 Park Avenue, New York, New York 10017. Set forth
in  Schedule  B hereto  and  incorporated  herein by  reference  are the  names,
business  addresses,  principal  occupations  and  employments of each executive
officer and director of JP Morgan Chase.







SEC 1745 (3-98)

SCHEDULE 13G ISSUER: Wesco International CUSIP NO.: 95082P105 SCHEDULE A JPMP CAPITAL CORP. EXECUTIVE OFFICERS(1) President Jeffrey C. Walker* Executive Vice President Mitchell J. Blutt, M.D.* Executive Vice President Arnold L. Chavkin* Executive Vice President John M.B. O'Connor* Managing Director Dr. Dana Beth Ardi Managing Director Christopher C. Behrens* Managing Director Julie Casella-Esposito* Managing Director Rodney A. Ferguson* Managing Director Cornell P. French* Managing Director Michael R. Hannon* Managing Director Alfredo Irigoin* Managing Director Andrew Kahn* Managing Director Jonathan R. Lynch* Managing Director Stephen P. Murray* Managing Director Timothy Purcell* Managing Director Faith Rosenfeld* Managing Director Shahan D. Soghikian* Managing Director Timothy J. Walsh* Managing Director Richard D. Waters, Jr.* Managing Director Damion E. Wicker, M.D.* Managing Director Eric R. Wilkinson* Senior Vice President and Assistant Secretary James Hutter* Senior Vice President and Assistant Secretary Mounir Nahas* Senior Vice President, Treasurer and Assistant Secretary Elisa R. Stein* Vice President and Assistant Secretary Richard Madsen* Vice President and Assistant Secretary Puneet Gulati* Vice President and Assistant Secretary Thomas Szymoniak* Vice President and Assistant Secretary Scott Kraemer* Secretary Anthony J. Horan** Assistant Secretary Robert C. Caroll** Assistant Secretary Denise G. Connors** Assistant Secretary Euisun Lisa Lee** Assistant Secretary Timothy Samson** - ------------------ (1) Each of whom is a United States citizen except for Messrs. Irigoin, and Soghikian. * Principal occupation is employee and/or officer of J.P. Morgan Partners, LLC. Business address is c/o J.P. Morgan Partners, LLC, 1221 Avenue of the Americas, New York, New York 10020. ** Principal occupation is employee or officer of J.P. Morgan Chase & Co. Business address is c/o J.P. Morgan Chase & Co., 270 Park Avenue, New York, New York 10017. SEC 1745 (3-98)

SCHEDULE 13G ISSUER: Wesco International CUSIP NO.: 95082P105 SCHEDULE B J.P. MORGAN CHASE & CO. EXECUTIVE OFFICERS(1) Chairman of the Board and Chief Executive Officer William B. Harrison Jr.* Vice Chairman David A. Coulter* Vice Chairman Walter A. Gubert* Vice Chairman Thomas B. Ketchum* Vice Chairman Donald H. Layton* Vice Chairman James B. Lee Jr. * Vice Chairman Jeffrey C. Walker** Vice Chairman; Head of Finance, Risk Management and Administration Marc J. Shapiro* Executive Officer Steven D. Black* Executive Officer Donald H. McCree III* Executive Officer James I. Staley* Executive Officer Don M. Wilson* Executive Officer William T. Winters* Executive Vice President; General Auditor William J. Moran* Executive Vice President; Chief Financial Officer Dina Dublon* Executive Vice President; Head of Market Risk Management Lesley Daniels Webster* Chief Credit Officer Robert S. Strong* Managing Director Paul W. Brandow* Managing Director; Corporate Treasurer David B. Edelson* Managing Director; Head of Credit Risk Policy Suzanne Hammett* Managing Director Louis M. Morrell* Managing Director John Steinhardt* Managing Director John Wilmet* Managing Director Jorge V. Jasson* General Counsel William H. McDavid* Corporate Secretary Anthony James Horan* Senior Vice President; Assistant General Counsel Ronald C. Mayer* Senior Vice President; Chief Compliance Officer Gregory S. Meredith* Director of Human Resources John J. Farrell* Director of Corporate Marketing and Communications Frederick W. Hill* Controller Joseph L. Scalfani* Assistant Corporate Secretary James C. Berry* - ------------------ (1) Each of whom is a United States citizen except for Messrs. Irigoin, and Soghikian. * Principal occupation is employee and/or officer of J.P. Morgan Partners, LLC. Business address is c/o J.P. Morgan Partners, LLC, 1221 Avenue of the Americas, New York, New York 10020. ** Principal occupation is employee or officer of J.P. Morgan Chase & Co. Business address is c/o J.P. Morgan Chase & Co., 270 Park Avenue, New York, New York 10017. SEC 1745 (3-98)