C7 Study Guide 2026
Everything you need to pass the C7 exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 C7 Exam Format at a Glance
📚 C7 Topics to Study (80)
✍️ Sample C7 Questions & Answers
1. In California, what typically triggers the requirement for a permit for low voltage wiring in a residential remodel?
Running new low voltage wiring through walls, floors, or ceilings in a residential remodel typically triggers permit requirements in most California jurisdictions.
2. A fiber optic link has a calculated loss budget of 3.5 dB. The measured insertion loss is 4.2 dB. What is the correct action?
Measured loss exceeding the calculated budget means the link fails and must be troubleshot for dirty connectors, bad splices, or excessive bend radius violations.
3. Which topology is recommended for a wired access control system serving 50 doors to minimize single-point-of-failure risk?
A distributed controller architecture with peer-to-peer redundancy ensures that failure of one controller does not take down the entire access control system.
4. A technician tests a carbon monoxide detector as part of a combination fire/CO system. The CO detector must alarm at what CO concentration level per UL 2075?
UL 2034 and UL 2075 define CO detector response thresholds, requiring alarm within specified time periods at 70 ppm and other concentrations, not a single fixed instantaneous level.
5. For a large commercial low voltage project, which inspection stage typically occurs after conduit and wire are in place but before walls are closed?
The rough-in inspection occurs after wiring and conduit are installed but before they are concealed by walls or ceilings.
6. Which California energy code provision requires newly installed lighting controls to include a manual-on function limited to a specific zone area?
Title 24 Part 6 Section 130.1 governs indoor lighting controls and specifies occupancy sensor requirements including manual-on functionality and zone area limits.