Connecticut E-1 Unlimited Electrical Contractor Exam Prep

About the Connecticut E1 Electrical Contractor license

Connecticut licenses electricians through the Connecticut Dept. of Consumer Protection. The E1 Electrical Contractor is the senior credential. It requires you to first hold Connecticut's E-2 Unlimited Electrical Journeyperson license for at least two years (or accumulate at least six years of equivalent electrical experience and training if you have not held the E-2), and then pass a more demanding exam that adds heavier load-calculation, design, and code-application content. A holder at this level can typically pull permits, supervise journeymen and apprentices, design installations, and serve as the qualifying individual for a licensed contracting business.

The exam is National Electrical Code (NEC) based, because Connecticut adopts the NEC as its electrical code. It is normally open book: you may bring a clean, bound copy of the adopted NEC edition. Tabs and highlighting are usually permitted; loose or handwritten notes usually are not — confirm the current rule with the vendor. Plan to tab and index your code book before test day, because the exam is as much a test of how fast you can locate a section as it is of what you have memorized.

Know these scope facts cold, because the exam asks them in plain-language form: the license is held by the individual, not the company; most installations require a permit and inspection before concealment (rough-in) and again at final; you must work within the classification you hold; and performing electrical work without the required license, or beyond your scope, is a violation that can cost you the license and carry civil penalties.

How Connecticut licensing works

• Experience: two years as a licensed E-2 Unlimited Electrical Journeyperson, or at least six years of equivalent electrical experience and training.
• Education: approved instruction hours or completion of an approved apprenticeship program count toward the journeyman experience that underlies the master credential.
• Application: submit the application, fees, and proof of experience (often signed off by a supervising/master electrician or employer) to the board before you are approved to sit.
• Exam vendor: PSI. The passing score is commonly 70 percent — confirm the current cut score, question count, and time limit on the candidate information bulletin.
• Renewal: licenses renew annually and require 4 hours of continuing education each year (your first renewal is exempt), typically covering NEC code updates and Connecticut electrical law.

Before you rely on any value in this guide, confirm the currently adopted NEC edition on the board and PSI bulletin. As of mid-2026, the 2022 Connecticut State Building Code is in effect and incorporates the 2020 NEC (NFPA 70) with state amendments; a next-cycle code referencing the 2023 NEC has been proposed but was not yet in effect at time of writing. Ampacities, GFCI/AFCI scope, working-clearance distances, and receptacle-spacing rules all change between editions, and the exam is written to the edition your state has adopted — not necessarily the newest one published.