Electrical installation means the provision of corresponding supply to electrical appliances or instruments and their induction together with the safety circuits. The electrical installation provides a safe source for connecting electrical appliances of a consumer with electrical supply through over current and earth leakage protection. It consists of all cables, pertinent safety components, and control gear. In short, fixing different types of circuits and electrical equipment on a panel, recombination of electrical components with an incomplete system for making a complete system thereof, installation of electrical wiring in a precise or correct fashion either temporarily or permanently, installation of protective gadgets, installation of service lines on a one floor or multi-floor buildings, installation of motors, installation of load and earthing system are all included in electrical installation. In fact, the electrical installation consists of a complete system of all types of electrical wiring and its associated electrical components or instruments, protection, testing, signal communication circuits, and entire instruments related to the electrical control, installed in residential and commercial buildings, industrial units, factories, and refineries, etc.