Tests and methods
Although most of the tests have been detailed above, there still remain certain tests that are common and critical to an electrical system. Parameters such as the resistance of leakage paths and resistance of a conductor have to be known for some applications.
The tests include the following:
0 Effectiveness of the power earth
0 Effectiveness of the electronic earth
0 Continuity of the earthing system and the required equipotentiality (so as to check the possibility of earth current loops)
0 Earth pit locations, resistance of earth conductor, material, and size
0 Location of protection devices, so that the path taken by fault current is minimum and insures the activation of a protection device under fault
conditions
0 Ratings of fuse and other protection devices
0 Selection of suitable cable types with proper current ratings keeping in mind environmental conditions and length of run
0 Materials prone to environmental hazards which may be mechanical orchemical, which might be present, such as dampness, high temperature, explosive gases, vapors
0 Electrical equipments, to ensure that its operation will not cause overload conditions
0 Location of installation of electrical equipment and accessories.
If all the above points are considered during the installation of an electrical system, there will be a reduced need for troubleshooting. The quality of the system will also be good.