Final answer:
To ensure electrical safety, one should use circuit breakers and fuses to prevent overheating and the three-wire system to reduce risks of shock and thermal hazards.
Step-by-step explanation:
When using electrical energy, safety is paramount to prevent serious injuries or damage. Two important safety measures are:
- Using circuit breakers and fuses to interrupt excessive currents and thus prevent thermal hazards like fires.
- Implementing the three-wire system, which includes live/hot, neutral, and earth/ground wires, to guard against shock as well as thermal hazards by grounding the neutral wire and the case of the appliance.
The purpose of the one-handed method, or keeping one hand in your pocket while working with high-power electric circuits, is to minimize the risk of electric current passing through the chest cavity and potentially stopping the heart, making this a sensible safety suggestion.