Basic Electricity 2, WASSCE (SC), 2021

Question 6

 

  1. State the main purpose of testing an installation.
  2. State in sequential order, the tests to be carried out on a new installation.

 

Observation

The expected answers were;


(a)        The main purpose of testing an installation

  • It is done to detect faults before dangerous situations arise.                                    

(b)        The sequential order of tests to be carried out on a new installation

  • Polarity test;
  • Insulation resistance test;
  • Earthing test;
  • Continuity test.

 

Many of the candidates who attempted this question did fairly well in the first part but could not list the sequential order of testing on a new electrical installation.