Section A2-A6: Earth tags for SY and SWA

In this practical electrical installation tutorial, we look at how to correctly terminate SY cable at accessories and equipment, with a particular focus on the correct earthing arrangements for the cable’s braided construction. The video follows on from the termination of the SY gland and demonstrates how the three black cores are correctly identified using brown, black and grey sleeving. It then explains why the metallic braid of an SY cable must be correctly earthed to provide protection against the braid becoming live if the cable is damaged or penetrated by a conductive object. The tutorial demonstrates two common methods of providing an earth connection to the gland: Banjo earth tags Piranha nuts You'll see examples of both arrangements and learn how they provide a connection for the flying earth lead from the cable gland. The video takes a closer look at the construction of a piranha nut, including its serrated "teeth", grub screw and earth connection point. It explains the correct orientation of the piranha nut when fitting it to a gland, ensuring that the serrated side makes the required contact with the enclosure or gland nut. A key part of the demonstration is understanding when each earthing method should be used. The video explains why a piranha nut is particularly suitable for IP-rated enclosures, such as the IP65 enclosure shown in the demonstration. Using a banjo arrangement may require an additional hole to be drilled into the enclosure, potentially compromising its IP rating. The piranha nut provides an alternative that avoids this issue. In this video, you'll learn: How to correctly identify the three cores of an SY cable. Why coloured sleeving is used to identify the conductors. Why the braided screen of SY cable needs to be correctly earthed. What can happen if the braid becomes energised following damage to the cable. How to use a banjo earth tag arrangement. How to use a piranha nut arrangement. The different components of a piranha nut. The correct orientation of a piranha nut when installing it. How the serrated teeth provide the required electrical connection. How to secure the piranha nut using its grub screw. How to connect a flying earth lead to the gland. The considerations when terminating SY cable into an IP-rated enclosure. Why a piranha nut can be preferable when maintaining an enclosure's IP rating. The importance of maintaining the integrity of an IP65 enclosure. This video is particularly useful for electrical apprentices and learners developing their practical installation skills, as well as anyone looking to improve their understanding of SY cable terminations, cable glands and protective earthing arrangements. ⚠️ Safety notice: All apprentices and delivery staff must wear appropriate PPE when working in an official workshop. The practical examples shown in this video have been filmed in a controlled teaching environment. If you found this tutorial useful, don't forget to Like, Subscribe and turn on notifications for more electrical installation tutorials, practical demonstrations and apprenticeship training content. #ElectricalInstallation #ElectricalTraining #SYCable #CableGland #PiranhaNut #BanjoEarthTag #Earthing #ElectricalApprentice #Electrician #ElectricalEngineering #IP65 #CableTermination #ElectricalSafety #Apprenticeship