pappitattoli
New Member
- Joined
- Aug 13, 2021
- Messages
- 1
Hello everybody!
please forgive me if any of this sounds stupid, but I'm new to this world.
I'm designing the off-grid system for my farm. The final diagram is 90% complete, but I'm stuck with the grounding.
I understand that grounding changes a lot depending on the components and other variables, so I thought I'd draw a diagram for the whole grounding system.
Consider the following:
My doubts are the following:
So please help me find out if something is wrong!
please forgive me if any of this sounds stupid, but I'm new to this world.
I'm designing the off-grid system for my farm. The final diagram is 90% complete, but I'm stuck with the grounding.
I understand that grounding changes a lot depending on the components and other variables, so I thought I'd draw a diagram for the whole grounding system.
Consider the following:
- It's a split phase with two 120V Victron Quattro inverters. There will be both 120V and 240V appliances
- The inverters will get absolutely no AC inputs. They will be powered exclusively by the battery bank (BYD LVL 15.4)
- The Quattros have an automatic Neutral/Ground bonding inside, when no AC input is used. Here's the manual:"The Quattro is provided with a ground relay (see appendix) that automatically connects the N output to the casing if no external AC supply is available."
My doubts are the following:
- where/how does the RCD/GFCI come into place?
- does it make sense that inside the breaker box there's no bonding between neutral and ground? From what I understand, the neutral/ground bonding should be made in only one point for the whole system, and that's where the Quattro's internal bonding comes into play, together with the main ground busbar
- for each Quattro, the AC output has three terminals: Line, Neutral and Ground. As I said, Neutral and Ground are automatically bonded together by the inverter, so does that mean that the Ground terminal has no wires connected to it? It seems that I can use the ground lug (chassis) and that would be enough.
- the attached diagram has been made by me based on what I could read online for the "standard" setups, but I'm not quite sure that it would work for a split-phase system (I could't find a lot of examples for this kind of setup)
So please help me find out if something is wrong!