Under the old NEC it was permissible to run 3 wires Hot Hot Neutral from a main home panel out to a sub panel for 120/240 Single Phase Three Wire Service. HOWEVER several years ago the NEC required 4 wires Hot Hot Neutral Ground out to MOST 120/240 sub panels and at the sub the Neutral and Ground (unlike at main) ARE NOT BONDED AND SEPARATE. It would take too much typing to explain why 4 is better and safer and that's beyond the scope here. I cant explain in a paragraph what takes entire books or chapters to explain or why the NEC made the change, but generally they make changes to save a life or prevent a fire.
OF COURSE THERE ARE THOUSANDS OF THE OLD THREE WIRE SYSTEMS AND YES THEY WORK FINE WELL DUH
I'm ONLY describing the latest code and practices but yall feel free to do as you please, its your home your money and your risk not mine lol
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Today's Featured Article - George's Fordson Major - by Anthony West (UK). This is a bit of a technical info to add on to the article about George's Major in the "A Towny Goes Plowing" article. George bought his Major from a an implement sale about 18 years ago for £200.00. There is no known history regarding its origins or what service it had done, but the following work was undertaken by Harold alone to bring it up to show standard. From the engine number, it was found that the major was produced late 19
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