Hello. Welcome to Just Answer.
Most likely, with your subpanel, you need an add-on ground bar, which screws directly to the inside of the box, at the back.
Some panels do not come with them. Make sure in the sub, you keep neutral wires and ground wires on seperate bars. Neutral wires go to a bar that is isolated from the metal enclosure.
At your main panel, the ground wire lands on the same bar that all of the existing grounds and neutrals are connected to.
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Yes, I had to add a grounding bar for the ground wires from the circuit wires. But, there is no lug big enough to connect the hefty wire coming from the main panel.The grounding bar I added had about ten screws for the 12 gauge wire but nothing for the #4 wire.
can u see that?
I'm reading through it now. Do you mind standing by for a moment?
You can get a mechanical lug at your local home center. I can post a picture of it for you. It can be attached to the ground bar.
One moment please, while I look it up.
so this is something to screw into the small grounding lug hole to accept a #4 wire?
Yes, I'm looking it up now.
This is something I will need to put in both panels, right?
In the sub for sure. If there's nowhere to land a wire that size in the main, you need one there too.
Why was I asked to pay for this when I am a subscription member? do u know?
I'm not sure. The Experts don't typically get into that side of things. But the question should be covered under your subscription.
OK thanks. Is there somebody that deals with these issues, That u know about?
I can ask customer service to look at your question. I don't know how long it will be before they see it though.
Yes, would u please? Thanks.