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  <xsd:element abstract="true" id="wcc_CondensedFinancialInformationLineItems" name="CondensedFinancialInformationLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_CondensedFinancialInformationStatementOfIncomeTextBlock" name="CondensedFinancialInformationStatementOfIncomeTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_CondensedFinancialInformationStatementsOfCashFlowsTextBlock" name="CondensedFinancialInformationStatementsOfCashFlowsTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_CondensedFinancialInformationStatementsOfFinancialConditionTextBlock" name="CondensedFinancialInformationStatementsOfFinancialConditionTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_CondensedFinancialInformationTable" name="CondensedFinancialInformationTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_CondensedFinancialInformationTextBlock" name="CondensedFinancialInformationTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_CondensedStatementsOtherCurrentLiabilities" name="CondensedStatementsOtherCurrentLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="wcc_CondensedStatementsOtherLiabilitiesNoncurrent" name="CondensedStatementsOtherLiabilitiesNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="wcc_ContingentInterestPayablePercentageOfAverageTradingPrice" name="ContingentInterestPayablePercentageOfAverageTradingPrice" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_ControlAutomationAndMotorsMember" name="ControlAutomationAndMotorsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_ConvertibleSeniorDebenturesDueIn2025Member" name="ConvertibleSeniorDebenturesDueIn2025Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_ConvertibleSeniorDebenturesDueIn2026Member" name="ConvertibleSeniorDebenturesDueIn2026Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_ConvertibleSeniorDebenturesDueIn2029Member" name="ConvertibleSeniorDebenturesDueIn2029Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_Customers" name="Customers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_DataCommunicationsMember" name="DataCommunicationsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_DebtInstrumentRepurchasePrice" name="DebtInstrumentRepurchasePrice" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="wcc_DeferredTaxAssetTranfserPricing" name="DeferredTaxAssetTranfserPricing" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="wcc_DeferredTaxAxis" name="DeferredTaxAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_DeferredTaxLiabilitiesInventory" name="DeferredTaxLiabilitiesInventory" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="wcc_DefinedContributionPlanEmployerDiscretionaryContributionAmount" name="DefinedContributionPlanEmployerDiscretionaryContributionAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="wcc_DefinedContributionPlanEmployerMatchingContributionPercent" name="DefinedContributionPlanEmployerMatchingContributionPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_DefinedContributionPlanMaximumAnnualContributionPerEmployeePercent" name="DefinedContributionPlanMaximumAnnualContributionPerEmployeePercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_DeutschEngineeredConnectingDevicesIncMember" name="DeutschEngineeredConnectingDevicesIncMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_Distributioncenters" name="Distributioncenters" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="wcc_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_EarningsPerShareDilutionLimit" name="EarningsPerShareDilutionLimit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_EffectOfDilutiveSecuritiesOnEarningsPerShare" name="EffectOfDilutiveSecuritiesOnEarningsPerShare" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_EffectiveIncomeTaxRateReconciliationAdjustmentRelatedToUncertainTaxPositions" name="EffectiveIncomeTaxRateReconciliationAdjustmentRelatedToUncertainTaxPositions" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_EffectiveIncomeTaxRateReconciliationDomesticTaxBenefitFromForeignOperations" name="EffectiveIncomeTaxRateReconciliationDomesticTaxBenefitFromForeignOperations" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_EffectiveIncomeTaxRateReconciliationRevaluationOfDeferredTaxItems" name="EffectiveIncomeTaxRateReconciliationRevaluationOfDeferredTaxItems" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedInSubsequentFiscalYear" name="EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedInSubsequentFiscalYear" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="wcc_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedInThreeYears" name="EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedInThreeYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="wcc_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedInTwoYears" name="EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedInTwoYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="wcc_EquityDistribution" name="EquityDistribution" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="wcc_EquityInvestmentCashReceived" name="EquityInvestmentCashReceived" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="wcc_EquityInvestmentNoteReceivable" name="EquityInvestmentNoteReceivable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="wcc_EquityInvestmentPercentageNotOwned" name="EquityInvestmentPercentageNotOwned" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="wcc_EquityInvestmentTotalConsiderationReceived" name="EquityInvestmentTotalConsiderationReceived" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="wcc_ExerciseOfRestrictedStockUnitsAndRetirementOfCommonStockShares" name="ExerciseOfRestrictedStockUnitsAndRetirementOfCommonStockShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_ExerciseOfRestrictedStockUnitsAndRetirementOfCommonStockValue" name="ExerciseOfRestrictedStockUnitsAndRetirementOfCommonStockValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="wcc_FixedRateDebtFairValueDisclosures" name="FixedRateDebtFairValueDisclosures" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="wcc_FullServiceBranchesAcquired" name="FullServiceBranchesAcquired" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="wcc_Fullservicebranches" name="Fullservicebranches" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="wcc_FurnitureFixturesAndEquipmentMember" name="FurnitureFixturesAndEquipmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_GainOnDebtExchange" name="GainOnDebtExchange" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_GeneralAndIndustrialSuppliesMember" name="GeneralAndIndustrialSuppliesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_GoodwillAndIndefiniteLivedIntangibleAssets" name="GoodwillAndIndefiniteLivedIntangibleAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="wcc_GoodwillLineItemsLineItems" name="GoodwillLineItemsLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_IncreaseToPurchaseCommitments" name="IncreaseToPurchaseCommitments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="instant" />
  <xsd:element id="wcc_InsuranceProgramsPolicyTextBlock" name="InsuranceProgramsPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_IntangibleAssetsGrossExcludingGoodwill" name="IntangibleAssetsGrossExcludingGoodwill" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="wcc_InterestRateAxis" name="InterestRateAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_InterestRateDomain" name="InterestRateDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_InvestmentsInAffiliatesAndOtherNoncurrentAssets" name="InvestmentsInAffiliatesAndOtherNoncurrentAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="wcc_LeverageRatio" name="LeverageRatio" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="wcc_LiborMember" name="LiborMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_LightingAndControlsMember" name="LightingAndControlsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_NorthAmericaMember" name="NorthAmericaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_NotificationOfSaleOfJointVentureEffectiveDate" name="NotificationOfSaleOfJointVentureEffectiveDate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:dateItemType" xbrli:periodType="instant" />
  <xsd:element id="wcc_OperatingLossCarryforwardsNetOfFederalIncomeTax" name="OperatingLossCarryforwardsNetOfFederalIncomeTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="wcc_OutstandingCovertibleDebentureScheduleTableTextBlock" name="OutstandingCovertibleDebentureScheduleTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_PercentOfPrincipalAmountContigentOnAdditionalInterestPayment" name="PercentOfPrincipalAmountContigentOnAdditionalInterestPayment" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_PotelcomSupplyIncMember" name="PotelcomSupplyIncMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_PowerDistributionEquipmentMember" name="PowerDistributionEquipmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_ProductStockKeepingUnits" name="ProductStockKeepingUnits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="wcc_Products" name="Products" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="wcc_RecoLlcMember" name="RecoLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_RedemptionPricePercentageOfPrincipalAmount" name="RedemptionPricePercentageOfPrincipalAmount" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_ReductionInInterestRateMargin" name="ReductionInInterestRateMargin" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="wcc_ResultsOfAffiliatesOperations" name="ResultsOfAffiliatesOperations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_RevolvingCreditFacilityMember" name="RevolvingCreditFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_RsElectronicsMember" name="RsElectronicsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_SaleOfJointVentureEffectiveDate" name="SaleOfJointVentureEffectiveDate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:dateItemType" xbrli:periodType="instant" />
  <xsd:element id="wcc_SalesRevenueNetPercentage" name="SalesRevenueNetPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_ScheduleOfDeferredTaxAssetsAndLiabilitiesLineItems" name="ScheduleOfDeferredTaxAssetsAndLiabilitiesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_ScheduleOfDeferredTaxAssetsAndLiabilitiesTable" name="ScheduleOfDeferredTaxAssetsAndLiabilitiesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_ScheduleOfEmployeeBenefitPlansLineItems" name="ScheduleOfEmployeeBenefitPlansLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_ScheduleOfEmployeeBenefitPlansTable" name="ScheduleOfEmployeeBenefitPlansTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_ScheduleOfGoodwillWccTable" name="ScheduleOfGoodwillWccTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_SellingPriceOfEquityInvestment" name="SellingPriceOfEquityInvestment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="wcc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableIntrinsicValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableIntrinsicValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="wcc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="wcc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element id="wcc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableWeightedAverageRemainingContractualTerm" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisableWeightedAverageRemainingContractualTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="instant" />
  <xsd:element id="wcc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisesInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisesInPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisesInPeriodWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsExercisesInPeriodWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsForfeituresInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsForfeituresInPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsForfeituresInPeriodWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsForfeituresInPeriodWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="wcc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingIntrinsicValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingIntrinsicValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="wcc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingWeightedAverageRemainingContractualTerm" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingWeightedAverageRemainingContractualTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="instant" />
  <xsd:element id="wcc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAndStockAppreciationRightsWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element id="wcc_ShareBasedCompensationArrangementByShareBasedPaymentAwardStockAppreciationRightsGrantsInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardStockAppreciationRightsGrantsInPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_ShareBasedCompensationArrangementByShareBasedPaymentAwardStockAppreciationRightsGrantsInPeriodWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardStockAppreciationRightsGrantsInPeriodWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingRollForward" name="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsAndStockAppreciationRightsOutstandingRollForward" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_StatementOfCashFlowsParentheticalAbstract" name="StatementOfCashFlowsParentheticalAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_StockIssuedDuringPeriodValueStockOptionsAndStockAppreciationRightsExercised" name="StockIssuedDuringPeriodValueStockOptionsAndStockAppreciationRightsExercised" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="wcc_StockOptionsInvolvedInPrivateNegotiationTransaction" name="StockOptionsInvolvedInPrivateNegotiationTransaction" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="wcc_StockholdersEquityParentheticalAbstract" name="StockholdersEquityParentheticalAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_SupplierRelationshipsMember" name="SupplierRelationshipsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_SupplierVolumeRebateAverageRate" name="SupplierVolumeRebateAverageRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_SupplierVolumeRebateRangeHigh" name="SupplierVolumeRebateRangeHigh" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_SupplierVolumeRebateRangeLow" name="SupplierVolumeRebateRangeLow" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_SupplierVolumeRebateRate" name="SupplierVolumeRebateRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_SupplierVolumeRebateReceivables" name="SupplierVolumeRebateReceivables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="wcc_TaxImpactOfExchangeOfDebt" name="TaxImpactOfExchangeOfDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="wcc_TaxImpactOfIssuanceOfConvertibleDebtInstruments" name="TaxImpactOfIssuanceOfConvertibleDebtInstruments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="wcc_TrademarksSubjectToDeclineInPerformance" name="TrademarksSubjectToDeclineInPerformance" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="wcc_TvcCommunicationsLlcMember" name="TvcCommunicationsLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wcc_UndistributedEarningsOfForeignSubsidiaries" name="UndistributedEarningsOfForeignSubsidiaries" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="wcc_WeightedAverageAssumptionsForFairValueCalculationOfShareBasedPaymentAwardsLineItems" name="WeightedAverageAssumptionsForFairValueCalculationOfShareBasedPaymentAwardsLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_WeightedAverageAssumptionsForShareBasedPaymentAwardsTable" name="WeightedAverageAssumptionsForShareBasedPaymentAwardsTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wcc_WireCableAndConduitMember" name="WireCableAndConduitMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
</XBRL>
