Electrical Safety Basics
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Questions and Answers

What color pattern should the location box be painted to enhance visibility?

Black and yellow stripes.

Why is it essential to joint the screen and armour of copper cables with suitable wires?

To achieve the specified screening factor and ensure proper earthing.

What is the primary purpose of earthing the copper cable screen and armour?

To minimize the risk of electric shock and ensure safety.

How does effective earthing contribute to electrical safety?

<p>It provides a low-resistance path for fault currents to safely disperse.</p> Signup and view all the answers

What should be done first to avoid electric shock during the installation process?

<p>Jointing the copper cable screen and armour with suitable wires.</p> Signup and view all the answers

What specific type of cable joints is recommended for ensuring proper screening and earthing?

<p>Suitable wires should be used to joint the screen and armour of copper cables.</p> Signup and view all the answers

Why is the specific earthing of copper cable screens and armour critical for electrical installations?

<p>It is essential to achieve a low earth value to ensure safety and avoid electrical shocks.</p> Signup and view all the answers

In the context of electrical safety, what sequence should be followed when working with copper cables?

<p>Earthing should be completed first to prevent electric shocks due to induction.</p> Signup and view all the answers

What visual markings should be applied to the location box housing the EC socket?

<p>The location box should be painted with black and yellow stripes.</p> Signup and view all the answers

What is the role of the copper cable screen in electrical installations?

<p>The copper cable screen acts to prevent interference and ensures the integrity of the electrical system.</p> Signup and view all the answers

Study Notes

Location Box Safety

  • The EC Socket should be fixed on the location box
  • The location box should be painted with black and yellow stripes

Copper Cable Screening and Earthing

  • Screen and armour of copper cables should be jointed with suitable wires
  • This ensures the specified screening factor
  • Copper cable screen and armour should be earthed with a low value earth
  • Earthing should be done first to avoid electric shock from induction

Location Box Installation

  • EC Socket should be mounted directly onto the location box.
  • The location box needs to be painted with black and yellow stripes.

Copper Cable Screen & Armour Jointing

  • The screen and armor of copper cables must be connected using suitable wires.
  • This is crucial to achieve the required screening factor and ensure proper earthing at stations.
  • The jointing process should be completed before any other work to avoid electric shock from induction.

Copper Cable Earthing

  • The copper cable screen and armor must be earthed using a low-value earth connection.

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Description

This quiz covers important safety protocols regarding location boxes and the proper screening and earthing of copper cables. Understanding these safety measures is crucial for preventing electric shock and ensuring the integrity of electrical installations.

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