Class - 6 - October

October

ACTIVITY

LINE TESTER

Objectives: To understand the use of Line tester

Materials Required:

• Line tester.
• Connector screw driver (for open the line tester)

Related Information:Line tester is the electrical device, which is used to check the presence of Electricity. It has a neon light and resistor. The phase wire can be identified by the flow in the tester, when the tip of the tester is placed on it. Tester is provided with a screw driver, but it should be used with care.

Following are the main parts of a typical Phase or Line Tester:

1). Metallic Rod and Mouth:

2). Body and Insulation.

3). Resistor.

4). Neon Bulb.

5). Element (Metallic Spring).

6). Metallic Cap Screw and Clip.

Working of a Phase or Line Tester:

When we touch mouth (flat end of the Metallic rod) of Phase or Line tester with naked Live / hot wire whereas one of our finger touch the metallic Cap Screw or Clip of Phase/Line Tester, then circuit is completed and current start to flow in Metallic rod.

Safety Precaution:

• Never try to work on electricity without proper guidance and care.
• Work with electricity only in presence of those persons who has good knowledge and practical work to deal with electricity.
• Don’t touches the open wire/Conductor even tester shows absence of phase or hot supply.
• Use Line Tester only with 100V-500V,
• Don’t use Phase or Line Tester with High voltages.
• Don’t hit on the handle of Line tester otherwise, Neon bulb or element may damage.