On page 94 of the Ebook, I am having trouble with understanding what is Electrically Common in the top and bottom illustrations.
When you put in a temporary ground on the top line, don't you just make the circuit a parallel circuit, not protecting the person working on the load...when both switches are closed. But then I have problems figuring out if/or if not the ground connections are Electrically Common, because all illustrations show Electrically Common/Uncommon with a load. I will stop there as far as questions because the more I think about it, the more confused I get. I am also referring to sections 2.7 and 2.8 which deal with Electrically Common points in a circuit.
When you put in a temporary ground on the top line, don't you just make the circuit a parallel circuit, not protecting the person working on the load...when both switches are closed. But then I have problems figuring out if/or if not the ground connections are Electrically Common, because all illustrations show Electrically Common/Uncommon with a load. I will stop there as far as questions because the more I think about it, the more confused I get. I am also referring to sections 2.7 and 2.8 which deal with Electrically Common points in a circuit.