Electrical Safety Precautions Quiz

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Questions and Answers

What should be done if defects are detected in portable electrical equipment before use?

  • Immediately repair or replace the equipment (correct)
  • Ignore the defects and continue use
  • Use the equipment but with caution
  • Continue using the equipment for the day

What should be done if broken switches or sockets are found in the electrical equipment?

  • Ignore them if they don't affect performance
  • Wait for someone to fix them
  • Use them cautiously
  • Replace them immediately (correct)

When should electrical installation certificates be issued for installations?

  • Only for new installations
  • Every two years
  • For all installations by Qualified persons (correct)
  • Only when requested by users

What action should be taken if deficiencies are found in personal protective equipment before use?

<p>Take the equipment out of service for inspection and testing (B)</p>
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What safety requirements must be complied with prior to performing work on live electrical circuits?

<p>Obtaining a Hot Work permit and preparing a JSA (B)</p>
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Who is responsible for supervising the electrical isolation and works of different voltage ratings?

<p>Operation and Electrical Maintenance Personnel (A)</p>
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What must be done when de-energizing transformers according to the text?

<p>Close the ground switches for both primary and secondary breakers (C)</p>
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What form needs to be completed and approved by the fire section before work commences?

<p>Fire interruption/isolation form (D)</p>
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Under what circumstances should work on live electrical circuits be performed according to the text?

<p>When possible alternatives are exhausted (A)</p>
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What precaution should be taken when isolating transformers or machines with multiple supply sources?

<p>Draw out their respective fuses (D)</p>
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Who is allowed to enter enclosures with high voltage circuits exposed during operation?

<p>Only Authorized Persons (A)</p>
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Where should the keys of enclosures containing high voltage apparatus be kept?

<p>Securely under lock with the Electrical Supervisor (B)</p>
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What precaution must be taken regarding male plugs and connectors?

<p>Properly seal and tighten them (D)</p>
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How should live parts of electrical equipment operating at 50 volts or more be guarded?

<p>Against accidental contact (D)</p>
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What should be done to flexible cords according to the standard electrical codes?

<p>Used in continuous lengths without splice and tap (A)</p>
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Why should flood lights or light receptacles never be supported by their electrical cords?

<p>Due to safety concerns, as cords are not designed for support (D)</p>
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What should be ensured during daily inspections of temporary electrical facilities?

<p>Inspecting for loose connections and decaying conditions (C)</p>
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Why should temporary electrical equipment not be used as permanent equipment?

<p>To avoid exposing workers to accidents (C)</p>
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What's a crucial requirement for hand-held electrical equipment used in confined spaces?

<p>Compliance with local/regional/international standards for equipment and voltage (A)</p>
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What should be checked in grounding clamps and cables of temporary electrical equipment?

<p>Decaying condition and tightness of connections (A)</p>
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What is the minimum size requirement for the ground cables used during de-energization?

<p>NO.2 AWG (35 mm2) copper (A)</p>
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When should grounding clamps be attached to the conductors?

<p>After the apparatus have been tested and confirmed to be de-energized (A)</p>
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What is the maximum allowed ground resistance during grounding?

<p>1.0 Ohm (D)</p>
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Who is responsible for authorizing work on de-energized transmission and distribution circuits or apparatus?

<p>The responsible Authorized Person of that facility (D)</p>
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In what order should the conductors be grounded?

<p>Nearest conductor to the worker first, followed by the succeeding conductor, and so forth (B)</p>
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When should ground cables first be inspected and approved?

<p>Before they could be connected to an effective ground (B)</p>
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