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EXECUTION VERSION 720482945 99551574 FOURTH AMENDMENT TO FOURTH AMENDED AND
RESTATED RECEIVABLES PURCHASE AGREEMENT THIS FOURTH AMENDMENT TO FOURTH AMENDED
AND RESTATED RECEIVABLES PURCHASE AGREEMENT (this “Amendment”), dated as of May
27, 2016, is entered into among WESCO RECEIVABLES CORP. (the “Seller”), WESCO
DISTRIBUTION, INC. (“WESCO” or the “Servicer”), the Purchasers (each, a
“Purchaser”) and Purchaser Agents (each, a “Purchaser Agent”) party hereto, and
PNC BANK, NATIONAL ASSOCIATION, as Administrator (the “Administrator”). RECITALS
1. The Seller, the Servicer, each Purchaser, each Purchaser Agent and the
Administrator are parties to the Fourth Amended and Restated Receivables
Purchase Agreement, dated as of September 24, 2015 (as amended through the date
hereof, the “Agreement”). 2. Concurrently herewith, the Seller, the Servicer and
the Originators are entering into that certain Third Amendment to Amended and
Restated Purchase and Sale Agreement (the “Purchase and Sale Agreement
Amendment”), dated as of the date hereof. 3. Concurrently herewith, the Seller,
the Administrator, JPMorgan Chase Bank, N.A., Credit Suisse AG, Cayman Islands
Branch, the Seller, WESCO and the Originators are entering into that certain
Joinder Agreement (the “Intercreditor Joinder”), dated as of the date hereof. 4.
The parties hereto desire to amend the Agreement as hereinafter set forth. NOW
THEREFORE, for good and valuable consideration, the receipt and sufficiency of
which are hereby acknowledged, the parties agree as follows: 1. Certain Defined
Terms. Capitalized terms that are used herein without definition and that are
defined in Exhibit I to the Agreement shall have the same meanings herein as
therein defined. 2. Consents. (a) Each of the parties hereto hereby consents to
the execution, delivery and performance of the Intercreditor Joinder, a copy of
which is attached hereto as Exhibit A. On and after the date hereof, each
reference in the Agreement to the “Intercreditor Agreement” shall be deemed to
be a reference to the Intercreditor Agreement as amended by the Intercreditor
Joinder. (b) Each of the parties hereto hereby consents to the execution,
delivery and performance of the Purchase and Sale Agreement Amendment, a copy of
which is attached hereto as Exhibit B. On and after the date hereof, each
reference in the

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2 720482945 99551574 Agreement to “Sale Agreement” shall be deemed to be a
reference to the Sale Agreement as amended by the Purchase and Sale Agreement
Amendment. 3. Representations and Warranties. The Seller and the Servicer hereby
represent and warrant to each of the parties hereto as follows: (a)
Representations and Warranties. The representations and warranties contained in
Exhibit III of the Agreement are true and correct as of the date hereof. (b) No
Default. Both before and immediately after giving effect to this Amendment and
the transactions contemplated hereby, no Termination Event or Unmatured
Termination Event exists or shall exist. 4. Effect of Amendment. All provisions
of the Agreement, as expressly amended and modified by this Amendment shall
remain in full force and effect. As of and after the Effective Time, all
references in the Agreement (or in any other Transaction Document) to “this
Agreement”, “hereof”, “herein” or words of similar effect referring to the
Agreement shall be deemed to be references to the Agreement as amended by this
Amendment. This Amendment shall not be deemed, either expressly or impliedly, to
waive, amend or supplement any provision of the Agreement other than as set
forth herein. 5. Effectiveness. This Amendment shall become effective as of the
time (the “Effective Time”) at which the Administrator has executed this
Amendment and receives each of the following: (A) counterparts of this Amendment
(whether by facsimile or otherwise) executed by each of the other parties
hereto, in form and substance satisfactory to the Administrator in its sole
discretion, (B) counterparts of the Purchase and Sale Agreement Amendment
(whether by facsimile or otherwise) executed by each of the parties thereto, in
form and substance satisfactory to the Administrator in its sole discretion, (C)
counterparts of the Intercreditor Joinder (whether by facsimile or otherwise)
executed by each of the parties thereto, in form and substance reasonably
satisfactory to the Administrator, (D) favorable opinions, in form and substance
reasonably satisfactory to the Administrator and each Purchaser Agent, of Jones
Day, counsel for Seller and the Originators, as to certain UCC, bankruptcy and
general corporate and enforceability matters (including certain conflicts
matters) and (E) such other agreements, documents, instruments and opinions as
the Administrator may request. 6. Counterparts. This Amendment may be executed
in any number of counterparts and by different parties on separate counterparts,
each of which when so executed shall be deemed to be an original and all of
which when taken together shall constitute but one and the same instrument. 7.
Governing Law; Jurisdiction. 7.1 THIS AMENDMENT SHALL BE A CONTRACT MADE UNDER
AND GOVERNED BY THE INTERNAL LAWS OF THE STATE OF NEW YORK (INCLUDING FOR SUCH
PURPOSE SECTIONS 5-1401 AND 5-1402 OF THE GENERAL OBLIGATIONS LAW OF THE STATE
OF NEW YORK).

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3 720482945 99551574 7.2 ANY LEGAL ACTION OR PROCEEDING WITH RESPECT TO THIS
AMENDMENT MAY BE BROUGHT IN THE COURTS OF THE STATE OF NEW YORK OR OF THE UNITED
STATES FOR THE SOUTHERN DISTRICT OF NEW YORK; AND, BY EXECUTION AND DELIVERY OF
THIS AMENDMENT, EACH OF THE PARTIES HERETO CONSENTS, FOR ITSELF AND IN RESPECT
OF ITS PROPERTY, TO THE NON-EXCLUSIVE JURISDICTION OF THOSE COURTS. EACH OF THE
PARTIES HERETO IRREVOCABLY WAIVES, TO THE MAXIMUM EXTENT PERMITTED BY LAW, ANY
OBJECTION, INCLUDING ANY OBJECTION TO THE LAYING OF VENUE OR BASED ON THE
GROUNDS OF FORUM NON CONVENIENS, THAT IT MAY NOW OR HEREAFTER HAVE TO THE
BRINGING OF ANY ACTION OR PROCEEDING IN SUCH JURISDICTION IN RESPECT OF THIS
AMENDMENT OR ANY DOCUMENT RELATED HERETO. EACH OF THE PARTIES HERETO WAIVES
PERSONAL SERVICE OF ANY SUMMONS, COMPLAINT OR OTHER PROCESS, WHICH SERVICE MAY
BE MADE BY ANY OTHER MEANS PERMITTED BY NEW YORK LAW. 8. Section Headings. The
various headings of this Amendment are included for convenience only and shall
not affect the meaning or interpretation of this Amendment, the Agreement or any
provision hereof or thereof. [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

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720482945 99551574 S-1 Fourth Amendment to Fourth A&R RPA IN WITNESS WHEREOF,
the parties hereto have executed this Amendment as of the date first written
above. WESCO RECEIVABLES CORP. By: /s/ Brian M. Begg Name: Brian M. Begg Title:
Treasurer WESCO DISTRIBUTION, INC., as Servicer By: /s/ Brian M. Begg Name:
Brian M. Begg Title: Treasurer

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720482945 99551574 S-2 Fourth Amendment to Fourth A&R RPA PNC BANK, NATIONAL
ASSOCIATION, as a Committed Purchaser By: /s/ Michael Brown Name: Michael Brown
Title: Senior Vice President PNC BANK, NATIONAL ASSOCIATION, as Purchaser Agent
for PNC Bank, National Association By: /s/ Michael Brown Name: Michael Brown
Title: Senior Vice President PNC BANK, NATIONAL ASSOCIATION, as Administrator
By: /s/ Michael Brown Name: Michael Brown Title: Senior Vice President

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720482945 99551574 S-3 Fourth Amendment to Fourth A&R RPA WELLS FARGO BANK,
NATIONAL ASSOCIATION, as a Committed Purchaser By: /s/ William P. Rutkowski
Name: William P. Rutkowski Title: Vice President WELLS FARGO BANK, NATIONAL
ASSOCIATION, as Purchaser Agent for Wells Fargo Bank, National Association By:
/s/ William P. Rutkowski Name: William P. Rutkowski Title: Vice President

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720482945 99551574 S-4 Fourth Amendment to Fourth A&R RPA FIFTH THIRD BANK, as a
Committed Purchaser By: /s/ Andrew D. Jones Name: Andrew D. Jones Title:
Director FIFTH THIRD BANK, as Purchaser Agent for Fifth Third Bank By: /s/
Andrew D. Jones Name: Andrew D. Jones Title: Director

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720482945 99551574 S-5 Fourth Amendment to Fourth A&R RPA THE HUNTINGTON
NATIONAL BANK, as a Committed Purchaser By: /s/ John D. Whetstone Name: John D.
Whetstone Title: V.P. THE HUNTINGTON NATIONAL BANK, as Purchaser Agent for The
Huntington National Bank By: /s/ John D. Whetstone Name: John D. Whetstone
Title: V.P.

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720482945 99551574 S-6 Fourth Amendment to Fourth A&R RPA LIBERTY STREET FUNDING
LLC, as a Conduit Purchaser By: /s/ John L. Fridlington Name: John L.
Fridlington Title: Vice President THE BANK OF NOVA SCOTIA, as a Committed
Purchaser By: /s/ Eli Mou Name: Eli Mou Title: Director & Execution Head THE
BANK OF NOVA SCOTIA, as Purchaser Agent for The Bank of Nova Scotia and Liberty
Street Funding LLC By: /s/ Eli Mou Name: Eli Mou Title: Director & Execution
Head

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720482945 99551574 S-7 Fourth Amendment to Fourth A&R RPA BRANCH BANKING AND
TRUST COMPANY, as a Committed Purchaser By: /s/ John K. Perez Name: John K.
Perez Title: Senior Vice President BRANCH BANKING AND TRUST COMPANY, as
Purchaser Agent for Branch Banking and Trust Company By: /s/ John K. Perez Name:
John K. Perez Title: Senior Vice President

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720482945 99551574 S-8 Fourth Amendment to Fourth A&R RPA U.S. BANK NATIONAL
ASSOCIATION, as a Committed Purchaser By: /s/ William Patton Name: William
Patton Title: VP U.S. BANK NATIONAL ASSOCIATION, as Purchaser Agent for U.S.
Bank National Association By: /s/ William Patton Name: William Patton Title: VP

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Exhibit A-1 720482945 99551574 EXHIBIT A Intercreditor Joinder (attached)

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Exhibit B-1 720482945 99551574 EXHIBIT B Purchase and Sale Agreement Amendment
(attached)

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