Hello all! I was hoping someone could help shine some light on an issue involving substation grounding.
I have attached a picture of the situation in question for reference... but for the most part the local site is supplying the remote site with single phase 120/240V power. Each site has their own grounding grid but are tied together by one 250MCM bare copper ground.
I am not sure whether i need to be bonding my power supply neutral to both the local grid AND the remote grid or just the local grid. Any chance someone can help me understand what to do here and/or provide me with an NEC code that addresses this particular issue?
Thanks in advance for your help!