Off topic discussion • Re: The Grounding Wire

Going back to the original question, and assuming it's about the sort of low voltage circuits you'd interface to a Pi or Pico:

The ground wire serves two purposes:

1. Completes the circuit. No ground means no return path for the current. An LED with a connection only to its +ve pin won't light.
2. Provides a common level for 0 volts. Without that it's uncertain that a high on one board will be seen as a high on the other.

So we have three wires in our electrical outlets. One is + (they call it phase here) which is the live wire. The other one is - (they call it neutral here) which is the one that completes the circuit. And the third one is the earth (ground) wire. In your explanation, you say ground completes the circuit. Then what is the wire that we call ground here? Did we misname it?

Statistics: Posted by jason_kidd — Thu Mar 21, 2024 12:11 pm

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