CSLB Low Voltage Systems (C-7) License: Practice Examination

What this exam covers

Practice questions for the California CSLB Low Voltage Systems (C-7) license exam, delivered online and graded instantly. Per the state's classification, a C-7 contractor installs, maintains, tests, and repairs systems that use 91 volts or less, including telephone, data, video, intercom, alarm, and control wiring systems. Works on any device, including iPad. See the official CSLB C7 classification.

8 exams · over 800 questions

Sample questions

1. A convenient unit of measurement to compare the resistance and size of one conductor with another is the:
   ✓ A. ohm · B. mil-foot · C. wattage · D. voltage drop
2. A GFCI breaker or receptacle will open a circuit where there is a current leakage to ground fault of:
   A. .06 · ✓ B. .006 · C. .6 · D. .2
3. A megohmmeter is used to test insulation resistance because it provides a:
   ✓ A. higher potential than an ohmmeter · B. multiple path for resistance · C. convenient means of recording resistance · D. wide range of resistance taps
4. Electrical circuit lines are drawn curved rather than straight:
   A. to allow the drafters to route the lines around the partitions · B. to show that curved lines are not as difficult to draw on CAD systems as straight lines · C. to show how conduit is installed · ✓ D. not to confuse the circuit lines with the building lines
5. For a family residence with 5000 sq. ft. all electric, how many amps are needed?
   A. 100 · B. 200 · ✓ C. 300 · D. 400