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Yet another Grounding question (Portable System)

novaleaf

New Member
Joined
Jul 2, 2023
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17
Location
woodinville wa
Noob trying to figure out grounding, so better run this by you all before I destroy life/equipment.

I am building a portable system very similar to this: https://www.mobile-solarpower.com/mobile-48v-system.html

Here is a photo of my current setup (battery+pv+12vStepDown not wired yet)
1689438823150.png

My Growatt Inverter doesn't have a chassis ground. I read in various comments that it grounds through the AC Input.
My Battery does have a chassis ground....

Ground via AC-IN?
am I correct that I can "just" ground via the AC In? So if not on grid, I could build a "pluggable" grounding rod from these parts+wire, plug the AC-Input into it, and I'm all good?
1689444616916.png

Battery Ground?

What about the battery chassis ground? This post says that if the AIO AC-In is grounded, the battery chassis doesn't need grounding. https://diysolarforum.com/threads/how-to-ground-wills-hand-truck-system.64729/post-810224 so nothing needed here?

If I do need to explicitly ground the battery, Could I tie it to the ACIn Ground and that's all good? That's what I gather from this nice doc: https://diysolarforum.com/resources/grounding-and-bonding-the-mpp-lv6548-inverter.323/
1689439301843.png
Bus Bar?
If I really do need to tie the battery into the AC In's ground.... whats the best way to do this in my setup photo? Buy a bus bar like this photo? Should I also tie the hand-truck frame into it?

1689439442229.png






Thank you much for the read/help.
 
Last edited:
seems like I am already covered with the 20A GFCI on my AC out, plus the fault detection built into the growatt. earth bonding would help in case of lightning strike but not much else.
 
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