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This course is dedicated for students who want to acquire knowledge on how electrical installations are done on site during execution stages. In fact, this course shows how electrical 1st, 2nd and 3rd fix must be installed. In chapter 1 (First Fix Installation), you will learn how containments such as PVC, metallic and flexible types of conduits are installed either embedded inside concrete slab or in different types of walls and ceilings. Moreover, you will learn how cable trays and trunks are installed explaining their different uses. In chapter 2, and as part of the Second Fix Installation, you will learn how wires must be pulled inside conduits. Pulling of wires must be done in consideration of conduit fill ratio that must be calculated before pulling wires which will be explained in detail in this chapter. Following the second fix chapter, you will come across the Panels, DB Installation and Wire Termination chapter which will show you how distribution boards and capacitor banks are installed. In addition to that, you will be able to know how wires are pulled to the panels and how dressing and termination is done. By reaching this stage of the course, the Cable and Wire Testing chapter will guide you on how to test cables and wires using the Megger testing device. In particular, this chapter will show you practically how to perform the Megger (Insulation) test of cables and wires using the megger device through real videos performed during site execution stage to ensure the quality of cables and wires before energizing the project. In the last chapter of this course (Third Fix Installation), and after the first, second and testing stages are explained, you will learn how light fixtures and power sockets are installed in ceilings and walls to finalize the electrical installations before the energization and operation of the project.