James T. Horn - President and Chief Executive Officer

Jim started his career as a marine electrician where he learned drafting and design. After joining Tri-M as an electrical designer, he quickly rose through the ranks by demonstrating a management and leadership style that enabled employees to flourish and exceeded the expectations of customers. In 2002, Jim became joint owner of Tri-M with founder, Tom Musser.


Jim has held many leadership roles with several organizations, most notably: Eastern Pennsylvania Chapter of Associated Builders and Contractors (ABC); Southern Chester County Chamber of Commerce; Brandywine Valley YMCA and Rotary at Longwood.

Electrical Licenses:


  • Philadelphia      
  • Reading               
  • West Chester   


  • Master Electrical              


  • Master Electrical              
  • Cecil County      

New Jersey                                       

  • Electrical Contractor       


  • Electrical Contractor's License    


  • Master Electrician           

District of Columbia

Social Media

Connect with James T. Horn on LinkedIn