What this book covers The Peerless Electrical (C-10) Study Guide Book prepares you for the trade portion of the California CSLB contractor license exam. Per the state's classification, a C-10 contractor "installs, erects, constructs, repairs, services, alters, adds to, or designs... electrical wiring, services, equipment, and apparatus for light, heat, and power." This printed book covers the subjects the state tests. See the official CSLB C10 classification. Book chapters Service entrance Ground-fault circuit interrupters Transformers Electrical materials Electrical tools & equipment Electrical code Photovoltaic (PV) power systems Plans & specifications Mathematics review Sample questions At what depth should U.F. cable be buried in the earth, given it has no supplemental protection?A. 12" · B. 18" · C. 24" ✓ · D. 36" The larger the conductor, the:A. Lower the ampacity · B. Lower the resistance ✓ · C. Higher the resistance · D. Higher the voltage Type UF cable shall not be used in:A. Hoistways · B. Motion picture studios · C. Storage battery rooms · D. All of the above ✓