Please enable JavaScript.
Coggle requires JavaScript to display documents.
Chapter 15 - Coggle Diagram
Chapter 15
-
Electrical hazards
Overheating of cables
When there is a overloading of circuits, current would have to flow through too many internal stores, leading to a rise of temperature and overheating. Causing fires to occur
Damaged insulation
When insulators age, they become brittle and break apart, exposing wires. Thus, if anyone accidentally touches the wires, they may get electrocuted.
Damp environment
Water contains charged ions that makes it a good conductor of electricity. Thus allowing current to easily flow through water and electrocute someone as current takes the lowest resistance path
Safety features
Fuse
-
If the flow of current is higher that the fuse rating, it will melt and make an open circuit
Circuit breaker
-
When current flowing exceeds its rating, the circuit breaker would trip and cause a circuit to be opened. the faulty appliance must be removed in order to restart the circuit breaker and allow current to flow through
-
-
