EARTHING - Quiz

1) Which type of holder is to be earthed as per BIS?

Angle holder Bracket holder Battern lamp holder Pendant lamp holder

2) What is size of earth conductor used in power load?

8 SWG 10 SWG 14 SWG 20 SWG

3) What is the range of good earth resistance?

High resistance Very low resistance Medium resistance Very high resistance

4) How earth resistance value mainted in summer?

Use new electrode Use new coal and salt layer Use new earth wire Use water and maintain wet condition

5) Which method is used to reduce earth resistance?

Reducing the pit depth for earthing Increasing the depth of earth pit Decreasing the length of the electrode Connecting number of earth electrode in parallel