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The document outlines the purpose of earthing in low-voltage installations, which includes providing low earth fault loop impedance for automatic disconnection during faults and limiting potential rise under earth-fault conditions to enhance safety. It emphasizes the importance of protective equipotential bonding to reduce touch voltages and eliminate dangerous sparking. Overall, these measures aim to increase the safety of persons and animals near non-current carrying metalwork.

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Indhumathi Babusenan
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43 views1 page

NOTES

The document outlines the purpose of earthing in low-voltage installations, which includes providing low earth fault loop impedance for automatic disconnection during faults and limiting potential rise under earth-fault conditions to enhance safety. It emphasizes the importance of protective equipotential bonding to reduce touch voltages and eliminate dangerous sparking. Overall, these measures aim to increase the safety of persons and animals near non-current carrying metalwork.

Uploaded by

Indhumathi Babusenan
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Installation earthing – Low-voltage (LV) installation earthing The purpose of earthing the non-current

carrying metalwork of plant and equipment of a low-voltage installation is to: a) provide for a low earth
fault loop impedance to facilitate automatic disconnection of supply in the event of a fault to exposed-
conductive-parts; and b) limit the rise of potential under earth-fault conditions of non-current carrying
metalwork with respect to earth to increase the safety of persons and animals in proximity to such
metalwork. Extending the earthing arrangement of an installation within a building by use of protective
equipotential bonding of exposed-conductive-parts and extraneous-conductive-parts increases the
safety of persons and animals by reducing touch voltages between such parts and it can also eliminate
dangerous sparking.

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