Section 51(2) in West Bengal Electrical Licensing Rules, 2017
(2)Candidates are not expected to have a memorized knowledge of the Central Electricity Authority (Measures relating to Safety and Electric supply) Regulation, 2010, but they are expected to be able to apply them and give a reasoned explanation of their meaning in any particular case, so far as electrical installation work is concerned. In the examinations they will be permitted to use a copy of the Regulations.Part-I Elementary PrinciplesGeneral idea about Electrical, Magnetic, and Insulating Materials. Electrical parameters.Purpose of Electrical Control gear, switch, fuse, miniature circuit breaker. Ranges of Low, Medium, High and Extra High Voltage.Series/Parallel Connections, Ohm's Law, Electrical Circuit, Power : Active & Reactive.Current drawn by common household/commercial loads. Line current of single phase motors of different ratings.Electrical measurement and measuring instruments such as Ammeter, Voltmeter, Energy meter, Insulation tester and Earth tester.Concepts of power and lighting circuit diagrams.Purpose of Earthing: Types of Earth electrodes, Earth lead & Earth continuity conductor, leakage to Earth & Protective devices.Grades & Classes of cables, (wirings for system upto 650 V)Central Electricity Authority Regulations- General familiarity particularly of Chapter V & VI of the Regulations.Part-2 Wiring of Systems Upto 650 VoltsEstimation of total load of a system and rating of Main Switch. Distribution through Sub-mains Distribution Boards and Sub-circuits.Voltage drop in a distribution system of a Medium Voltage installation and its limits. Balancing of loads, Limit of load in a single circuit.Types and sizes of conductors, Standard wire gauges, effective cross-section. Advantages of stranded conductor.Current rating of wires and conductors and danger of using under-size conductor and oversize fuses. Earthing of installations: Earthing Practices, Statutory provisions of Earthing. Types & Sizes of Earth connections.Central Electricity Authority Regulations - General familiarity related to installation work of this part.
