STEPHEN W. COLLINGS, MSEE, PE, Post Office Box CFEI, CVFI, CESCP Franklin, TN Telephone: (615)

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1 ENGINEER: ELECTRICAL Engineering Design & Testing Corp. STEPHEN W. COLLINGS, MSEE, PE, Post Office Box CFEI, CVFI, CESCP Franklin, TN Telephone: (615) EDUCATION: 2008 MS Electrical Engineering Vanderbilt University, 2006 BS Computer Engineering and Computer Science Lipscomb University, EXPERIENCE: August 2016 to Present Engineering Design & Testing Corp. Consulting Engineer Specialized consulting in electrical engineering for commercial, industrial, utility, and residential systems, including: Investigation of electrical injuries (electrocution, arc flash, burns) and property damage for product, premises, and professional liability claims Cause, scope, and repair estimate analysis of electrical systems and product malfunctions o Generators, motors, transformers, switchgear, control systems, motor drives and accessories o Building electrical systems o Commercial products o Batteries and backup power systems Investigation of lightning strike and power surge damage claims Remediation plan development for water and smoke contamination of electrical equipment Evaluation of products, installations, and maintenance procedures for compliance with electrical codes and standards (NEC, UL, NETA, et al.) Fire investigations for origin, cause, incendiary and subrogation potential Review of computer and PLC program code and architecture

2 CURRICULUM VITAE FOR STEPHEN W. COLLINGS, PAGE 2 OF 6 August 2007 to August 2016 Bonitron, Inc. Vice-President/Director of Engineering (January 2015-August 2016) Operational responsibility for electrical engineering, mechanical design, documentation, customer support, and information technology. Customer specification definition, product conceptualization, and architecture. Personnel, task, and schedule management. UL, CE, RoHS standards compliance management and planning. Process improvement, including production quality, partner company interfacing, pricing, and information technology infrastructure. Product reliability quantification. Sales and production support. Design Engineer (August 2007-January 2015) Product design for industrial power converters and variable-frequency drive accessories. Firmware creation, review, and testing. Topology and component selection. Thermal, magnetic, control, and packaging design. Printed circuit board layout. Product testing and documentation. Remote and field troubleshooting. August 2010 to August 2016 Lipscomb University Adjunct Professor Designed and taught IT 3233 Web Server Technologies. Taught CS 3523 Operating Systems, CS 2233 Data Structures and Algorithms, and EECE 4823 Digital Computer Design II. January 2010 to December 2014 University of Phoenix Facilitator Taught MTH208 College Mathematics I, MTH209 College Mathematics II, and MTH221 Discrete Math for Information Technology.

3 CURRICULUM VITAE FOR STEPHEN W. COLLINGS, PAGE 3 OF 6 EXPERIENCE DESIGN AND TESTING (partial listing): Firmware Review Analysis of program code written by multiple parties, to assist in locating flaws, optimizing performance, and adding features Grid-Tie Inverter for Regenerative Brake Design of firmware and power electronics to synchronize to AC grid, autodetect phase rotation and frequency, and regulate current flow; extensive debugging and review over product lifecycle Battery, Capacitor, and Ultracapacitor Systems Specification and design of energy storage systems for backup power and regenerative energy capture applications EXPERIENCE ENGINEERING INVESTIGATIONS (partial listing): Electrical Injury in Workplace Chattanooga, TN Determination of cause of arc flash in breaker panel resulting in injury to worker, and identification of responsible parties Electrical Injury to Utility Worker Huntsville, AL Determination of cause of electrical injury to linesman, evaluation of residential generator installation, and identification of responsible parties Water-Damaged Avionics Smyrna, TN Inventory and valuation of stock of used avionics, 500+ various items Peak Shaving Generators Fort Knox, KY Determination of cause of repeated component malfunction and replacement Water Damage to Multi-Story Building Old Hickory, TN Determination of scope and value of damaged electrical components in an eleven-story apartment building

4 CURRICULUM VITAE FOR STEPHEN W. COLLINGS, PAGE 4 OF 6 Home Appliance Damage Scottsville, AL Determination of cause of electrical damage to appliances in a residence when claim filed against electrical utility Substation Transformer Fault Cookeville, TN Determination of cause of electrical fault in 22.5 MVA substation transformer after maintenance Industrial Cable Malfunction Valparaiso, IN Determination of cause of damage to medium-voltage cables supplying factory PRESENTATIONS AND PUBLICATIONS: Variable Frequency Drives Engineering Design & Testing Corp., November 2016, Charleston, South Carolina Backup Power Sources: Varieties and Applications Engineering Design & Testing Corp., February 2017, Albuquerque, New Mexico Can I Put an LED Bulb in a Fluorescent Light Fixture? Engineering Design & Testing Corp. blog, July 2018 PROFESSIONAL ORGANIZATIONS: Institute of Electrical and Electronic Engineers (IEEE) International Association of Arson Investigators (IAAI) InterNational Electrical Testing Association (NETA) National Association of Fire Investigators (NAFI) National Fire Protection Association (NFPA) National Society of Professional Engineers (NSPE)

5 CURRICULUM VITAE FOR STEPHEN W. COLLINGS, PAGE 5 OF 6 REGISTRATIONS and CERTIFICATIONS: Registered Professional Engineer in Tennessee (#114511) Registered Professional Engineer in Arkansas (#17329) Registered Professional Engineer in Kentucky (#32091) Registered Professional Engineer in Georgia (#PE041365) Registered Professional Engineer in Alabama (#36191) Registered Professional Engineer in Illinois (# ) Registered Professional Engineer in Missouri (# ) Registered Professional Engineer in Mississippi (#27742) Registered Professional Engineer in Indiana (#PE ) National Council of Examiners for Engineering and Surveying ( ) OSHA Permit-Required Confined Space Entry Certified (67182) CompTIA Network+ (COMP ) NAFI Certified Fire and Explosion Investigator/Vehicle Fire Investigator ( v) NFPA Certified Electrical Safety Compliance Professional (CESCP ) CONTINUING EDUCATION: Flywheel Energy Storage, 2016 Emergency and Standby Generator Application, 2016 Natural Gas Fuel Cell Technology, 2016 Overview of Uninterruptible Power Systems (UPS), 2016 Power Distribution for Data Centers, 2017 HVAC Systems and Managing Power in Commercial Buildings, EDT 2017 Engineering Analysis of Failure: Determination of Cause in a Legal Environment, EDT 2017 Substation Cybersecurity & Arc Flash Hazard Mitigations, 2017 Transformer 360 Risk & Reliability, Dissolved Gas Analysis, Electrical Testing, 2017 Understanding High Speed Surges/Transients, 2017 Substation Maintenance I, 2017 Investigation of Gas and Electric Appliance Fires, 2017 National Fire, Arson & Explosion Investigation Training Program, 2017 Vehicle Fire, Arson & Explosion Investigation Science & Technology Seminar, 2018

6 CURRICULUM VITAE FOR STEPHEN W. COLLINGS, PAGE 6 OF NFPA 70E: Standard for Electrical Safety in the Workplace, 2018 Surge Protective Devices & Lightning Protection, 2018 Personal Protective Grounding for Electric Power Facilities and Power Lines, 2018 Protective Device Coordination Analysis, 2018 How to Perform a Short Circuit Study, 2018 How to Perform an Arc Flash Hazard Study, 2018