<?xml version="1.0" encoding="us-ascii"?><InstanceReport xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><Version>2.4.0.8</Version><ReportLongName>108 - Disclosure - Debt</ReportLongName><DisplayLabelColumn>true</DisplayLabelColumn><ShowElementNames>false</ShowElementNames><RoundingOption /><HasEmbeddedReports>false</HasEmbeddedReports><Columns><Column FlagID="0"><Id>1</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

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</LabelSeparator><Level>2</Level><ElementName>us-gaap_DebtDisclosureTextBlock</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><PreferredLabelRole>terseLabel</PreferredLabelRole><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="P01_01_2013To06_30_2013" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText>              &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt;MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif "&gt;  &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt;MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;b&gt;3.&lt;/b&gt; &lt;b&gt;Debt&lt;/b&gt;&lt;/div&gt;    &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt;TEXT-INDENT: 0.5in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &amp;#160;&lt;/div&gt;    &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt;TEXT-INDENT: 0.25in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  On September 30, 2011, HWC Wire &amp;amp; Cable Company, as borrower,  entered into the Third Amended and Restated Loan and Security  Agreement (&amp;#8220;2011 Loan Agreement&amp;#8221;), with certain lenders  and Bank of America, N.A., as agent, and the Company, as guarantor,  executed a Second Amended and Restated Guaranty of the  borrower&amp;#8217;s obligations thereunder. The 2011 Loan Agreement  provides for a $&lt;font style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;100&lt;/font&gt;  million revolving credit facility, bears interest at the  agent&amp;#8217;s base rate, with a London Interbank Offered Rate  (&amp;#8220;LIBOR&amp;#8221;) option and expires on September 30,  2016.&amp;#160;The 2011 Loan Agreement is secured by a lien on  substantially all the property of the Company, other than real  estate. Availability under the 2011 Loan Agreement is limited to a  borrowing base equal to &lt;font style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  85&lt;/font&gt;% of the value of eligible accounts receivable, plus &lt;font  style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  65&lt;/font&gt;% of the value of eligible inventory, less certain  reserves.&lt;/div&gt;    &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt;TEXT-INDENT: 0.25in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &amp;#160;&lt;/div&gt;    &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt;TEXT-INDENT: 0.25in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &amp;#160; Portions of the loan may be converted to LIBOR loans in  minimum amounts of $1,000 and integral multiples of $100. LIBOR  loans bear interest at the British Bankers Association LIBOR Rate  plus 125 to 200 basis points based on availability, and loans not  converted to LIBOR loans bear interest at a fluctuating rate equal  to the greatest of the agent&amp;#8217;s prime rate, the federal funds  rate plus 50 basis points, or 30-day LIBOR plus 150 basis points.  Unused commitment fees are 25 or 30 basis points, depending on the  amount of the unused commitment.&lt;/div&gt;    &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt"&gt;  &amp;#160;&lt;/div&gt;    &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt;TEXT-INDENT: 0.25in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  The 2011 Loan Agreement includes, among other things, covenants  that require the Company to maintain a specified minimum fixed  charge coverage ratio and availability levels. Additionally, the  2011 Loan Agreement allows for the unlimited payment of dividends  and repurchases of stock, subject to the absence of events of  default and maintenance of a fixed charge coverage ratio and  minimum level of availability. The 2011 Loan Agreement contains  certain provisions that may cause the debt to be classified as a  current liability, in accordance with GAAP, if availability falls  below certain thresholds, even though the ultimate maturity date  under the loan agreement remains as September 30, 2016.  Availability has remained above these thresholds. At June 30, 2013,  the Company was in compliance with the financial covenants  governing its indebtedness.&lt;/div&gt;    &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt;TEXT-INDENT: 0.5in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  &lt;b&gt;&amp;#160;&lt;/b&gt;&lt;/div&gt;    &lt;div style="clear:both;FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 10pt;TEXT-INDENT: 0.25in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"&gt;  The carrying amount of long term debt approximates fair value as it  bears interest at variable rates, which is a Level 2 measurement as  defined in Accounting Standards Codification (&amp;#8220;ASC&amp;#8221;)  Topic 820, Fair Value Measurement.&lt;/div&gt;  &lt;/div&gt;        </NonNumbericText><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>nonnum:textBlockItemType</ElementDataType><SimpleDataType>na</SimpleDataType><ElementDefenition>The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.</ElementDefenition><ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef

 -Publisher FASB

 -Name Accounting Standards Codification

 -Topic 505

 -SubTopic 10

 -Section 50

 -Paragraph 3

 -URI http://asc.fasb.org/extlink&amp;oid=6928386&amp;loc=d3e21475-112644



Reference 2: http://www.xbrl.org/2003/role/presentationRef

 -Publisher SEC

 -Name Regulation S-X (SX)

 -Number 210

 -Section 02

 -Paragraph 19, 20, 22

 -Article 5



Reference 3: http://www.xbrl.org/2003/role/presentationRef

 -Publisher FASB

 -Name Accounting Standards Codification

 -Topic 210

 -SubTopic 10

 -Section S99

 -Paragraph 1

 -Subparagraph (SX 210.5-02.19,20,22)

 -URI http://asc.fasb.org/extlink&amp;oid=6877327&amp;loc=d3e13212-122682



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