Electrical Installation Questions

State four advantages of A.C over D.C system. (4 marks)craft1 electrical June/July 2020

explain the two insulation resistance tests carried out in an electrical installation

Explain four reasons for carrying out the polarity test in electrical installation. (4 marks)craft1 electrical June/July 2020

outline the purpose for earthing an electrical installation

state two advantages of protective multiple earthing system

distinguish between the following types of cables i. P.V.C II. T.R.S

explain two factors considered when selecting a particular wiring system

State three advantages of MCBs over fuses .craft1 electrical June/July 2020

state three precautions to be observed when installing the wiring system of catenary

Define each of the following as used in solar systems: (a) irradiance; (i) diffuse radiation. (4 marks)craft1 electrical June/July 2020