The expected answers were:
(a) Hazard of electrical installation are:
- electric shock - over voltage,
- fire outbreak - under voltage,
- explosion - excess current.
(b) The protective devices used in domestic installation are:
- fuses.
- circuit breaker.
- distribution board,
- switches.
- (i)
This question was on electrical-wiring and installations. The question was a popular one but candidates were found wanting in parts (a), (b) and (c).
