Practice Test GeeksECS - Electrotechnical Certification Scheme Practice Test
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Electrical Wiring and Cable Installation Flashcards

6 cards from real ECS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Electrical Wiring and Cable Installation flashcards as text

  1. What minimum clearance is typically required between power cables and communication cables when run in parallel?

    Answer: At least 50mm (2 inches) to reduce electromagnetic interference

    A minimum separation of around 50mm is recommended between power and communications cables to reduce inductive interference on data cables.

  2. Which insulation material is commonly used for cables installed in wet or damp locations?

    Answer: Cross-linked polyethylene (XLPE) or similar moisture-resistant insulation

    XLPE and other moisture-resistant insulations are rated for wet locations because they do not absorb water or degrade when exposed to moisture.

  3. When cable tray is used as a cable support system, what is the maximum recommended fill ratio?

    Answer: Around 50% to allow heat dissipation and future additions

    Filling cable trays to only about 50% capacity allows cables to dissipate heat effectively and leaves room for future circuit additions.

  4. What is the correct method for supporting a vertical cable run at regular intervals?

    Answer: Use cable cleats or supports at intervals specified by the manufacturer or installation standard

    Vertical cables must be supported at regular intervals using approved cable cleats to prevent the cable's weight from stressing the terminations.

  5. Before terminating a cable, why is it important to confirm the circuit is de-energized using a voltage tester?

    Answer: To ensure there is no live voltage present that could cause electric shock or arc flash

    Confirming a circuit is de-energized with a voltage tester before termination is a critical safe-isolation step that prevents fatal electric shock.

  6. What does 'NEC' stand for, and why is it relevant to electrotechnical installation work in the US?

    Answer: National Electrical Code — it is the primary standard governing electrical installations in the US

    The National Electrical Code (NEC) is the benchmark for safe electrical design, installation, and inspection adopted throughout the United States.