I, Manas Kumar Dutta was in the employment of a private organization at about 39 years. I joined in the electrical department as a draftsman and holding the position of chief designer as the time of retirement. During this time I was actively involved in the following activities carried out by the organization. • Preparation of drawings for switchyard and substation layout . • Preparation of drawings related to power wiring & lighting installation. • Preparation of drawings for interplant cabling. • Preparation of drawings for cable tunnel and overhead cable gallery. • Preparation of drawings for cable tray installation. • Preparation of drawings for lightning protection system. • Preparation of drawings for earthing installation. Preparation of drawings for single line diagram