Grounding Wire: Preventing Current Flow & Circuit Breakdowns

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maccha
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What stops current from flowing through the grounding wire? How come it can flow through once another part of the circuit breaks?
 

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maccha said:
What stops current from flowing through the grounding wire? How come it can flow through once another part of the circuit breaks?

Can you provide a bit more context to your question please? What grounding wire? What circuit? What power source and what components are using the power. How is this "grounding wire" connected to the system?