Video- How to Terminate an SY Flex Cable

by Editor on July 16, 2012

This video from Learning Lounge gives an example of how to terminate an SY flexible cable. It shows the use of the correct type of a brass SY cable gland with the braiding being clamped between two washers to ensure it makes a good earth connection to the metal enclosure.

SY cable is generally for industrial applications and is often used in air conditioning installations to connect between internal and exterior units. It’s bad practice not to connect the braided outer sheath to earth as it forms an earthed shield around the inner cores. If not earthed it could become ‘live’ if the cable was pierced and would be unable conduct a fault current and trip the circuit. SY isn’t rated as an exterior grade cable although it is often found in outdoor installations.

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