Master Electrician.
Educator. Inspector.
Three roles. One standard. 39 years of New England electrical expertise, anchored in Mendon, MA.
Jack Grenga
Jack is a Master Electrician, business owner, and educator with thirty-five years in the electrical trade. He founded Precision Electric in 1987 and has personally led every major install, panel upgrade, and code-compliance call out of Mendon since.
His expertise extends well beyond the bench. Jack teaches Related Training Instruction at the Roger Williams University Electrical Apprenticeship Program, serves as the appointed Electrical Inspector for the Towns of Uxbridge, Mendon, and Millville, and is the region's go-to specialist for Generac Power Systems installations across Massachusetts.
"The code tells you what. My job, on the truck and in the classroom, is to teach the why." — Jack Grenga, Master Electrician
Three Roles. One Standard.
When you hire Precision Electric, you are hiring an instructor of electricians, a municipal inspector, and a 39 year business owner. The same person.
RWU Apprenticeship Instructor
Electrical apprenticeship instructor at Roger Williams University's NCCER-accredited training program.
Municipal Electrical Inspector
Appointed wiring inspector for the Towns of Uxbridge, Mendon, and Millville, Massachusetts.
Generac Power Systems Specialist
Authorized Generac dealer specializing in professionally installed standby power systems in Massachusetts, with generator service and preventative maintenance across Massachusetts, Rhode Island, and Connecticut.