This Low Voltage Systems Quiz is designed for electricians, apprentices, and trainees working with power-limited systems in residential, commercial, or industrial settings. You'll review key concepts such as wiring classifications, cable ratings, NEC requirements (like Article 725), transformer use, and circuit protection methods.
Perfect for exam prep, safety training, or jobsite refreshers, this quiz reinforces your understanding of low-voltage safety, system design, and troubleshooting practices.
Disclaimer: This quiz is intended for educational and certification review. It is not affiliated with any official licensing body or trade organization.
50 feet
100 feet
The length of the available snake
Not applicable. The code specifies no maximum distance
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False
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Are considered abandoned and must be removed
Pose no hazard because they carry no current
Can be “toned out” at a future date for use
May be left in place only in industrial applications
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Cables may be supported by the structural components of the building.
Raceways and cables may be supported by independent support wires attached to the suspended ceiling.
Cables may be attached to the support wire of a suspended ceiling.
Cables may be secured by straps, staples, hangers or similar fittings, as long as they are designed not to damage the cable.
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False
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6 in.
18 in.
2 ft.
6 ft.
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True
False
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1/4 in.
1/2 in.
2 in.
Not applicable. No separation is required.
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5 / 10
3 / 5
1 / 5
3 / 10
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1/2 in.
1 in.
1 1/4 in.
1 1/2 in.
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The raceway is rigid metal conduit
The raceway provides power to the equipment controlled by the Class 2 cable
Plenum wire ties are used at intervals of 18 inches or less
Not applicable. No exception exists
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6
10
16
18
All wires of all sizes require such a bushing
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True
False
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Quiz Review Timeline (Updated): Jun 25, 2025 +
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