Improving unfinished basement in 7 year old log home to have a small shop and a mancave
Installing sub panel 40 wire feet from main panel mainly because i don't want to home-run all my circuits to the main panel. Shop wiring going to main....only man cave (240 volt 3000 watts of heat and lighting/tv) powered from new sub panel
125 amp Eaton main lug sub panel and a Siemens main panel. Put 50 amp breaker in main, and ran 6/3 with bare ground to sub panel. Ground appears to a 10 AWG.
Neutral bar was strapped to ground bar in sub panel from factory so I removed the strap. Both ground bar and neutral bar are isolated from case via large plastic standoffs, so, i used the same strap to connect to floating ground bar to the sub panel enclosure. So, the neutral in the sub panel is only grounded back at the main panel.
THE QUESTION: Is the #10 AWG sufficient to ground the sub-panel to the ground bar in the main panel?
I am getting confusing info from other threads on this site and other web sites (probably my own reading comprehension issues).
The ground will never carry "neutral" current given the neutral is not connected to ground in the sub panel. I have seen at least two threads that claim that the ground must match the size of the two hots (6 AWG).