Low-voltage licensing
Connecticut
Connecticut requires state-level licensing through the Department of Consumer Protection (DCP), Occupational Licensing Division. The Limited Electrical (L-5, L-6) classifications cover low-voltage and signaling work. Master and journeyman license tiers exist for individuals; a separate Contractor's license is required to operate as a business.
Regulatory agency
Connecticut Department of Consumer Protection - Occupational Licensing
License classifications
The license types relevant to low-voltage work in Connecticut.
L-5 - Limited Electrical Contractor
Limited-scope electrical including most low-voltage signaling work.
Exam requiredL-6 - Limited Electrical Journeyman
Journeyman tier for limited electrical including low-voltage; works under an L-5 contractor.
Exam requiredT-1 / T-2 - Telecommunications Contractor / Journeyman
Specialty classifications for telecommunications cabling and signaling work.
Exam required
State-wide requirements
- Workers' compensation
- Required
- Renewal cycle
- Every 1 year
Common pitfalls
Mistakes we see installers make when navigating Connecticut licensing.
- Connecticut distinguishes between Unlimited (E-1) and Limited (L-5) electrical contractor licenses; low-voltage typically falls under Limited scope.
- Annual renewal - CT licenses lapse fast if you miss the deadline.
- City-level permitting still applies on top of the state license.
Sources
Last verified May 23, 2026. See something out of date? Email us.
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Disclaimer: This page summarizes public regulatory information for the convenience of low-voltage installers. It is not legal advice. State requirements change. Always verify current rules with the state agency before applying for, renewing, or relying on a license.