Need help adding in a sub panel

[TheCoachStone]

Hello everyone,

I currently have a 100a main panel and smaller sub panel - I also have a 6000XP that feeds only my EV. I'd like my 6000XP to feed a sub panel, but that is where I get confused. I don't mind if I repurpose the existing sub panel (probably preferable), and I also have an empty spare sub panel. From my research, it seems like I would need to also ground the sub panel. Which leads to my next question - is it ok to ground both out to the pipe that the main panel is grounded to? Thanks in advance.

Edit: I forgot to include the wire from the main panel to the inverter.

 

[timselectric]

The wiring from the main panel to the inverter, and from the inverter to the sub panel, should include an EGC. This is how you ground those pieces of equipment.

 

[TheCoachStone]

The wiring from the main panel to the inverter, and from the inverter to the sub panel, should include an EGC. This is how you ground those pieces of equipment.

Oh, I thought I would need something else from the "new sub panel" to the earth. Much thanks!

 

[timselectric]

Oh, I thought I would need something else from the "new sub panel" to the earth. Much thanks!

Your ground rod (earth) should already be connected to the grounding system, at the main panel.
You only want the earth connected at one place.

 

[TheCoachStone]

Your ground rod (earth) should already be connected to the grounding system, at the main panel.
You only want the earth connected at one place.

I've got one. Thank you!

 

[DIY everything]

If your main panel is the first fusible (or breakers) panel after your meter, then it should be grounded and bonded to neutral. From your main panel to your sub panel should already have 4 wires (separate ground) to it. Your main panel to your 6000xp should also be 4 wires which gives the ground you need.

 

[TheCoachStone]

If your main panel is the first fusible (or breakers) panel after your meter, then it should be grounded and bonded to neutral. From your main panel to your sub panel should already have 4 wires (separate ground) to it. Your main panel to your 6000xp should also be 4 wires which gives the ground you need.

When I was first thinking, I forgot that the 6000xp was fed by the main breaker. It makes more sense now. Thank you.