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If the live wire comes loose the motor will no longer have a p.d. across it and will not operate - it will switch off the power generator engine
The earth wire is a crucial part of the home electrical system and is designed to protect against electric shock.
If faults occur in the electrical system, the electricity will flow to earth by the shortest and easiest path. The shortest path is through a circuit breaker or fuse, which will break the electrical circuit. The earth wire should help stop electricity passing through your body if you have an electrical accident.
In electricity supply systems, an earthing system defines the electrical potential of the conductors relative to the Earth's conductive surface. The choice of earthing system can affect the safety and electromagnetic compatibility of the power supply, and regulations can vary considerably among countries. Most electrical systems connect one supply conductor to earth
Earthing in Generators are done for two Purpose.
Body Earth, for minimizing Electrical Shock.
Neutral Wire Earth, for Avoiding Floating Voltages in the System.
Earthing is essential for any electrical equipment. Generators are also required to earth to protect from shocks.
1-protection des personnes contre les electrocutions.
2- dection des masses stator
the earth wire is a main part of protection of the system because it is the lowest resistance point of the plant so any electrical shock pass through it instead of passing through any part of a larger resistance like humans
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