Yet Another Grounding Thread

[Dagoth Ur Does Solar]

Okay, here's the situation. I am in the middle of building a new 48V system. This system will sit in a detached outbuilding relatively close to the house. My intent is to have the system primarily serve as backup power for outages, while also powering some things in and around the outbuilding (fridge/freezers, cameras, power tools, chargers, etc).

Currently, when I need backup power into the home, I'd be using my 50A generator inlet and interlock kit in my mains distribution panel.

I guess I am trying to wrap my head around how to properly ground the system. Obviously within the home, the only NG bond is in the mains panel. And if I was building a purely detached system, I would want my inverter running to a distribution panel and just have the single NG bond there (I know the inverter could internally set the NG bond there, but I would be using a distribution panel in my case).

My intent was to run a dedicated ground conductor from my home's grounding rod to the outbuilding, so that I can have that part of the system grounded.

Am I crazy or is there no good way to do this without doing some kind of ground switching?

 

[jjww]

there is grounding and then there is BONDING....

 

[wdwtx2.0]

Just run the properly sized grounding conductor back to your house's main panel.

 

[glandpuck]

Bonding would be having the ground conductor in your main panel also attached to a metal water line somewhere in the house as well as a steel gas line if there is one. If the home is all non metallic water supply, then there is no water line bond.