Question 3
- (a)Define a fuse.
- (b)List two types of fuse.
- (c)State three reasons for earthing in an electrical installation.
Observation
The expected answers were;
- (a) A fuse is a protective device for opening a circuit by means of
a conductor designed to melt when an excessive current flows
through it.
(b) (i) Rewirable fuse
(ii)Cartridge fuse
(iii)High breaking capacity (HBC) fuse
(iv)High rupturing capacity (HRC) fuse
(c)(i) To protect equipment / appliances.
(ii) To prevent electric shock.