practical ILLUMINATION ,H.P.M.V.Lamp ,H.P.S.V. Lamp, Metal Halid Lamp.connection & Maintenance

study material For the electrician ,Wireman ITI and basic knowledge of electrical topics ex. Different type of lamp,such as High Pressure Mercury Vapor Lamp,High Pressure Sodium Vapor Lamp , Metal Halid lamp connection , operation & Maintenance please comment , share , subscribe like our channel