Essential Knowledge and Associated Skills EKAS This describes the essential skills and knowledge and their level required for this unit Evidence shall show that knowledge has been acquired of installing and maintaining low voltage services underground All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies KSTISA Low voltage electrical underground service installation KS01-TIS55A Low voltage electrical underground service installation Evidence shall show an understanding of the installation of low voltage electrical services to an extent indicated by the following aspects T Standards codes legislation supply authority regulations and or enterprise requirements T Requirements for the use of enterprise construction manuals system diagramsplans and drawings encompassing Types of low voltage underground services Methods of construction and installation Minimum depths for underground services to be buried and proximity to other assets and structures T Installation equipmenttools Equipment and tools for underground service installation Fittings and hardware for underground service installation T Methods of laying cables including Conduits and sand and slabbing T Characteristics and applications of different types of cables encompassing Cable crosssectional area of conductors Current rating and fuse types and ratings T Techniques for maintenance of service installations encompassing Diagnosis and repair of faults T Jointing and terminating methods encompassing Polymeric heatshrink materials Polymeric tape materials Insulated piercing connectors IPCs Energised and deenergised cables Connections to point of entry fuse boxes pillars pits T Testing and commissioning procedures encompassing Preenergising tests insulation resistance and continuity test Inspection Equipment functionality tests Polarity voltage and phase sequence tests Neutral and phase identification tests Neutral integrity tests Meter function test Testing check forms T Connection principles Purpose and function of MEN system Types of connection faults Causes and effects of incorrect and poor electrical connections Principles of loop impedance Reasons for and methods used to maintain standard phase sequencing Purpose and operation of service fusing Use of independent earth for testing |