Exhibit 31.2**CERTIFICATION OF CHIEF FINANCIAL OFFICER**I, Frank J. Bilban, certify that: 1. I have reviewed this quarterly report on Form 10-Q of Encore Wire Corporation;  2. Based on my knowledge, this quarterly report does not contain any untrue statement ofa material fact or omit to state a material fact necessary to make the statements made, inlight of the circumstances under which such statements were made, not misleading withrespect to the period covered by this quarterly report;  3. Based on my knowledge, the financial statements, and other financial informationincluded in this quarterly report, fairly present in all material respects the financialcondition, results of operations and cash flows of the registrant as of, and for, theperiods presented in this quarterly report;  4. The registrant’s other certifying officer(s) and I are responsible for establishingand maintaining disclosure controls and procedures (as defined in Exchange Act Rules13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined inExchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have: a. designed such disclosure controls and procedures, or caused suchdisclosure controls and procedures to be designed under our supervision, to ensurethat material information relating to the registrant, including its consolidatedsubsidiaries, is made known to us by others within those entities, particularlyduring the period in which this quarterly report is being prepared;  b. designed such internal control over financial reporting, or causedsuch internal control over financial reporting to be designed under oursupervision, to provide reasonable assurance regarding the reliability offinancial reporting and the preparation of financial statements for externalpurposes in accordance with generally accepted accounting principles;  c. evaluated the effectiveness of the registrant’s disclosure controlsand procedures and presented in this quarterly report our conclusions about theeffectiveness of the disclosure controls and procedures, as of the end of theperiod covered by this quarterly report based on such evaluation; and

 
 d. disclosed in this quarterly report any change in the registrant’sinternal control over financial reporting that occurred during the registrant’smost recent fiscal quarter (the registrant’s fourth quarter in the case of anannual report) that has materially affected, or is reasonably likely to materiallyaffect, the registrant’s internal control over financial reporting; and 5. The registrant’s other certifying officers and I have disclosed, based on our mostrecent evaluation of internal control over financial reporting, to the registrant’sauditors and the audit committee of registrant’s board of directors (or persons performingthe equivalent functions): a. all significant deficiencies and material weaknesses in the design oroperation of internal control over financial reporting which are reasonably likelyto adversely affect the registrant’s ability to record, process, summarize andreport financial information; and  b. any fraud, whether or not material, that involves management or otheremployees who have a significant role in the registrant’s internal control overfinancial reporting.Date:August 8, 2007                                       /s/ FRANK J. BILBAN   Frank J. Bilban   *Vice President — Finance, Chief FinancialOfficer, Treasurer and Secretary*