Observation

The expected answers were;

1. Definition of Terms:

(i) Current rating: This is the maximum current that a load will carry indefinitely without undue deterioration.
(ii)  Fusing current: This is the current at which the fuse blows or the fuse element melts.
(iii) Fusing factor: This is the ratio of the fusing current to the current rating of the fuse.

2. (i)      Methods of Wiring
   • Surface
   • Conduit
   • Trunking
   • Ducting

(ii)       Methods of earthing

• Rod
• Mesh
• Plate
• Pipe
• Mat

 

Many of the candidates who attempted this question did well by defining the terms required and stated the methods of wiring and earthing.