Safety with electricity Flashcards
What is a fuse
a small piece of metal
what is the function of a fuse
To melt when there is an unsafe overload of electricity
What is a circuit breaker
A switch that trips as soon as the current becomes too high
What is the disadvantage of a fuse
It has to be replaced
What is the advantage of a fuse
It is cheap and easily available
What is the disadvantage of a circuit breaker
It is expensive
What is the advantage of a circuit breaker
It can just be switched on again after it trips
What is the function of a lightning conductor
it serves as protection against lightning strikes
What is a lightning conductor
A metal rod with a sharp end that is fixed to roofs/high points and another end is planted in the ground
What are the effects of theft and illegal connections of electricity
Causes instability/poor quality of electricity, power interruptions, Eskom cannot keep up with the demands and great financial losses
How are illegal connections made
They are made by changing wiring
What does operation Khanyisa do
Promote the legal use of electricity and promote change in consumers behaviour
What is the meter used to measure energy usage in a household
Electricity meter
What is the name for the wire used for conduction to earth
Earth wire
What is the name for the wire that melts if the current overloads
Fuse
