As long as your power source is coming from the same house or building Main breaker, your on the same source. Electrical wiring 101. A neutral wire connected or not has nothing to do with equipment grounding or loops. The green or green / yellow wire connected to the ground buss at the main panel is the only equipment ground. This is basics folks. The real electricians in the group understand, you do not. I will no longer post on this Thread but will let the electricians have a good laugh on your answer above.
FYI > https://www.cnczone.com/forums/diy-c...-nec-nfpa.html