Test Lamp Testing Instruments

Test Lamp Points : Definition Test Lamp, Construction and Working of Test Lamp, Testing Instruments It is the simplest form of a testing instrument. It is consisted on a 15w, 220V 1am and two testing loads. We can also use 60w, for 100w lamp but 15W lamp is mere recommended. Test lamp consist of a 230V electric bulb of any wattage fitted in an insualted type pendent holder testing leads. It is usually connected, incase of single phase installation between live wire and neutral wire. Remember that test lamp will not glow if wire under test is other than phase wire.