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CSLB C-7 Low Voltage Systems (Trade Exam)

CSLB Low Voltage Systems (C-7) Trade Examination — Questions: Not published by CSLB · 210 minutes · Passing score: Not published by CSLB.

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Your other CSLB exam

PrepPass Course: CSLB Law and Business

This license also needs the Law and Business exam (CSLB can waive an exam in some cases). 110 lessons, 732 practice questions.

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01

Test what you know · free, all of it

Five ways to practise.

The same 100 questions, dealt five ways. Pick the one that fits the time you have.

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Ten questions, no feedback while you answer. Then one report: all 10 explained, each pointing at the chapter that teaches it.
10 questionsabout 5 minevery answer explained
By section
Pick Job Planning and Design, Testing and Project Closeout, Systems Configuration and Installation, Material Selection and Estimation. An explanation appears the moment you answer.
100 questionsuntimed
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100 questions210 minutes
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02

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100
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The seven chapters, free online

every chapter free online
  1. 1Job Planning and Design18% of the exam — the largest sectionRead free →
  2. 2Material Selection and Estimation15%Read free →
  3. 3Wire/Cable Installation and Termination12%Read free →
  4. 4Systems Configuration and Installation16%Read free →
  5. 5Testing and Project Closeout17%Read free →
  6. 6System Troubleshooting, Repairs, or Replacements7%Read free →
  7. 7Safety15%Read free →
03

Before you sit

Know the exam you're walking into.

Free study guideEvery section, onlineTopics by weightWhat to study firstHow hard is it?Honest answer, with numbersScores & retakesWhat the board publishesOne-page cheat sheetNight-before facts
04

See the questions first

Two from the bank, answered.

Real items, with the answer marked and the reason written out — the same format as all 100.

Job Planning and Design

What voltage ceiling appears in the CSLB's definition of the C-7 Low Voltage Systems classification?

  1. A120 volts
  2. B91 voltsCorrect
  3. C50 volts
  4. D600 volts

Why: The C-7 definition covers energy-limited communication and low voltage systems that do not exceed 91 volts. Fifty volts is a Cal/OSHA work-practice threshold, not the license limit; 120 volts is ordinary branch-circuit voltage; and 600 volts is the dividing line used in some safety rules, not the C-7 scope.Cal. Code Regs. tit. 16 §832.07 (C-7 classification, CSLB)

Testing and Project Closeout

Which TIA standard must field test equipment conform to under the federal cabling specification?

  1. AANSI/TIA-569
  2. BANSI/TIA-1152Correct
  3. CANSI/TIA-607
  4. DANSI/TIA-606

Why: The specification requires test equipment to conform to ANSI/TIA-1152, the field-tester standard. TIA-606 covers administration and labeling, TIA-607 covers bonding and grounding, and TIA-569 covers pathways and spaces.UFGS 27 10 00 (2025), para. 3.11.1 (telecommunications cabling testing)

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06

The exam itself

CSLB C-7 Low Voltage Systems (Trade Exam), by the numbers.

QuestionsNot published by CSLBCSLB says only that “All trade examinations consist of multiple-choice questions.” No count appears in the study guide, the Examinations FAQ, or PSI's candidate bulletin.
Time210 minutesCSLB: “You will be given 3-1/2 hours to complete each examination.” It is per examination, not per sitting — a candidate taking Law and Business plus a trade exam gets 3-1/2 hours for each.
SectionsJob Planning and Design · Material Selection and Estimation · Wire/Cable Installation and Termination · Systems Configuration and Installation · Testing and Project Closeout · System Troubleshooting, Repairs, or Replacements · Safety
Passing scoreNot published by CSLBCSLB: “You will be informed at the test site about the percentage of correct answers needed to pass each examination,” and, in Get Licensed to Build Q14, that the percentage “varies for each exam”. Passing candidates are never shown their own score. PrepPass states no passing score for this exam.
Our bank100 questions · updated October 2026Written from California Contractors State License Board (CSLB)
LanguagesEnglish
SourceCalifornia Contractors State License Board (CSLB)Verified 2026-10-30

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08

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09

Questions

Asked before starting.

Is the practice really free, or does it stop after a few questions?

All 100 questions, the timed mock and the report are free with no sign-up. A free account only adds saving your progress.

Is your mock the same as the real CSLB C-7 Low Voltage Systems (Trade Exam)?

No. Ours is 100 questions in 210 minutes; the real exam is 210 minutes long. Use the mock for stamina and section timing, not as a score predictor.

What score do I need?

Not published by CSLB. CSLB: “You will be informed at the test site about the percentage of correct answers needed to pass each examination,” and, in Get Licensed to Build Q14, that the percentage “varies for each exam”. Passing candidates are never shown their own score. PrepPass states no passing score for this exam.

Practice questions are AI-assisted study material written from California Contractors State License Board (CSLB) and reviewed by PrepPass — for practice only, not official exam questions. Bank updated October 2026. PrepPass is an independent study resource and is not affiliated with, endorsed by, or approved by California Contractors State License Board (CSLB). Always confirm current exam details with California Contractors State License Board (CSLB).
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