DVD Team for Changes to the National Electrical Code (textbook & DVDs), 2020 NEC

Vince Della Croce

Master Electrician, Electrical Inspector & Plans Examiner, Siemens Business Development Manager, Technical Committee Member NFPA 73, 99, and 1078

Vince Della Croce began his career in IBEW Local Union #3, New York City, as a helper and progressed to journeyman and foreman electrician before relocating to Florida. He’s licensed by the State of Florida as a master electrician, electrical inspector and plans examiner.

He holds an Associate of Science degree in Electronic Engineering and Electrical Maintenance Technology from Penn Foster College and represents Siemens in the role of Business Development Manager with a focus on supporting electrical inspectors throughout the country.

Vince serves the IAEI Florida Chapter as Education Chairman and IAEI Southern Section as Assistant Secretary Treasurer. He was an alternate member of Code Making Panels 7 and 12 for the 2017 NEC and is a principal technical committee member of NFPA 73, 78, 99 and 1078. He’s also seated on a New York City electrical code revision technical committee which is tasked with moving the city from the 2008 to the 2014 Code.

Vince has two sons. The oldest is serving the community as a police detective and holds a master’s degree in Business Administration. The youngest is pursuing a bachelor’s degree in Marketing.


Daniel Brian House

Master Electrician, Instructor, VP of Digital and Technical Training, Mike Holt Enterprises

Brian House is Vice President of Digital and Technical Training at Mike Holt Enterprises, and a Certified Mike Holt Instructor. He began teaching seminars in 2000 after joining the elite group of instructors who attended Mike Holt’s Train the Trainer boot camp. Brian was personally selected for development by Mike Holt after being named as one of the top presenters in that class. He now travels around the country to teach Mike Holt seminars to groups that include electricians, instructors, the military, and engineers. His first-hand experience as an electrical contractor, along with Mike Holt’s instructor training, gave him a teaching style that is practical, straightforward, and refreshing.

Brian is high-energy, with a passion for doing business the right way. He expresses his commitment to the industry and his love for its people whether he’s teaching, working on books, or developing instructional programs. Brian also leads the Mike Holt Enterprises apprenticeship and digital products teams. They’re creating cutting-edge training tools and partnering with apprenticeship programs nation-wide to help them take their curriculum to the next level.

Brian and his wife Carissa have shared the joy of their four children and many foster children during 22 years of marriage. When not mentoring youth at work or church, he can be found racing mountain bikes with his kids or fly fishing on Florida’s Intracoastal Waterway. He’s passionate about helping others and regularly engages with the youth of his community to motivate them into exploring their future.


Jennifer Martin

Master Electrician, Instructor, Certified Electrical Safety Professional, EFCOG ESTG Vice Chair

Jennifer Martin is a third-generation wireman, IBEW Local #112 member that brings enthusiasm and charisma to the formal instruction and application of Electrical Codes and Safety Standards. She has been a vital part of the Volpentest HAMMER training facility within the Department of Energy (DOE). She provides her extensive experience in electrical instruction and consultation to local industries and generation facilities for ElecTrain while currently acting as the Electrical Administrator for Federal Engineers & Constructors (FE&C). She manages this workload all the while attending to her amazing children (six to be exact) ranging from twenty to six months of age. It goes without saying she is an incredibly busy woman.

Jennifer is a master electrician with electrical contractors’ licenses in multiple states, a certified electrical safety professional (CESCP) and IEEE member, adding to her unbridled dedication to the electrical industry.  Some may ask what she prefers to read for enjoyment; she usually responds with “Electrical codes and safety standards” followed by a sincere smile and slight giggle. Through her various industry memberships and representation of building trades there is always an opportunity for learning and sharing her passion with others. 

Jennifer was introduced to Mike Holt by Eric Stromberg who she has worked with at DOE supporting Energy Facility Contractors Group (EFCOG); Electrical Safety Task Group for DOE Complex wide consistency and best practices. She most humbly accepted the opportunity to work with this unbelievable group of individuals and looks forward to the future adventures to come.


Eric Stromberg

Master Electrician, Electrical Engineer, Instructor

Eric Stromberg has a bachelor’s degree in electrical engineering and is a professional engineer. He started in the electrical industry when he was a teenager helping the neighborhood electrician. After high school, and a year of college, Eric worked for a couple of different audio companies, installing sound systems in a variety of locations from small buildings to baseball stadiums. After returning to college he worked as a journeyman wireman for an electrical contractor.

After graduating from the University of Houston, Eric took a job as an electronic technician and installed and serviced life safety systems in high-rise buildings. After seven years he went to work for Dow Chemical as a power distribution engineer. His work with audio systems had made him very sensitive to grounding issues and he took this experience with him into power distribution. Because of this expertise, Eric became one of Dow’s grounding subject matter experts. This is also how Eric met Mike Holt, as Mike was looking for grounding experts for his 2002 Grounding vs. Bonding video.

Eric taught the National Electrical Code for professional engineering exam preparation for over 20 years and has held continuing education teacher certificates for the states of Texas and New Mexico. He was on the electrical licensing and advisory board for the State of Texas, as well as on their electrician licensing exam board. Eric now works for a Department of Energy research laboratory in New Mexico, where he’s responsible for the electrical standards as well as being a part of the laboratory’s AHJ.

Eric’s oldest daughter lives with her husband in Zurich, Switzerland, where she teaches for an international school. His son served in the Air Force, has a degree in Aviation logistics, and is a pilot and owner of an aerial photography business. His youngest daughter is a singer/songwriter in Los Angeles.


Mario Valdes

Master Electrician, Electrical Inspector, Plan Examiner, Instructor

Mario Valdes Jr. is an electrical inspector and plan examiner for an engineering firm that does private provider and municipal support services. He started his career at 16 years old with his father, who owns an electrical contracting company and worked himself up to a master electrician. Once he received his Florida state contractor’s license, he ran his father’s company as a project manager and estimator. Mario’s passion for the National Electrical Code led him to obtain his inspector and plan review certifications to embark on a new journey as an electrical professional in the Code-compliance industry.

Mario is a goal setter and plans to become a certified instructor within a year. He’s worked in very complex projects such as hospitals, casinos, hotels, and multi-family high-rise buildings bringing him diverse experience in the electrical field. He is a member of the IAEI, NFPA, & ICC and believes that by staying active in these organizations he’ll be ahead of the game, with cutting-edge knowledge pertaining to safety codes. He enjoys participating in meetings and giving his input on certain topics.
When not immersed in the electrical world he enjoys fitness training because a healthy mind requires a healthy body. 

Mario resides in Miami, Florida with his beautiful family which includes his wife and 2-year-old son, and they enjoy family getaways to Disney World and other amusement parks.


David A. Williams

Master Electrician, Instructor, Electrical Inspector, IAEI International Board of Directors, NEC Correlating Committee Member, NEC CMP 10

David Williams is an electrical inspector for Delta Township, Lansing, Michigan and has been an Adjunct Associate Professor at Lansing Community College in the Electrical Technology Program since 1995. He began his electrical career as an apprentice in 1974 at U.S. Steel, started inspecting for the State of Michigan in 1988, and has been inspecting for Delta Township since 1994.
David is a Licensed Master Electrician, Registered Electrical Inspector, Plan Reviewer, and Instructor. He holds a Certified Electrical Inspector—Master, Electrical Inspector General, and Electrical Inspector 1-2 Family through the International Association of Electrical Inspectors, IAEI.

He’s served on a Technical Committee for the National Electrical Code since 2007 and is currently serving on the NEC Correlating Committee for the 2020 Code and CMP-10 covering Articles 215, 225, 230, 240, and the new Article 242. He Chaired CMP-7 for the 2017 NEC and served on CMP-5 covering Grounding and Bonding for the 2008, 2011, and 2014 Code cycles.
David also serves on seven UL Standards Technical Panels; UL-111, Standard for Multi-Outlet Assemblies; UL-414, Meter Mounting Equipment; UL-1081, Swimming Pumps and Filters; UL-2200, Stationary Engine Generator Assemblies; UL-2201, Portable Engine Generators; UL-2743, Portable Power Packs; and UL-3001, Distributed Energy Generation and Storage Systems. He’s served on the UL Electrical Council since 2010.

David is a Vice-President for the International Association of Electrical Inspectors, International Board of Directors. He’s currently the IAEI Michigan Chapter Secretary and serves on the Western Section Board of Directors. He’s Past President of the IAEI Michigan Chapter and Past President of the IAEI Western Section.

David and his wife Marie have two children, Christina and Aaron, and reside in Delta Township. He likes golfing and they enjoy spending time at their family cottage.