New sub

[Oakey]

I have a 200 amp service that needs a sub due to 48 circuits being in the panel. There is a main breaker outside with a 4 wire SER run to the panel no big deal. Inside the panel the grounds and neutrals are not seperated and the bare ground wire is on a single lug bolted to the side of the panel box near the top, so there is no slack.
My question is this...Can I just add a grounding bar inside the panel or do I need to have a physical wire connection to the new bar from the SER ground?

 

[stickboy1375]

I have a 200 amp service that needs a sub due to 48 circuits being in the panel. There is a main breaker outside with a 4 wire SER run to the panel no big deal. Inside the panel the grounds and neutrals are not seperated and the bare ground wire is on a single lug bolted to the side of the panel box near the top, so there is no slack.
My question is this...Can I just add a grounding bar inside the panel or do I need to have a physical wire connection to the new bar from the SER ground?

I always just drill and tap a lug somewhere in the panel to connect my ground...then just install a ground bar on both sides of the panel...

 

[LarryFine]

I have a 200 amp service that needs a sub due to 48 circuits being in the panel. There is a main breaker outside with a 4 wire SER run to the panel no big deal. Inside the panel the grounds and neutrals are not seperated and the bare ground wire is on a single lug bolted to the side of the panel box near the top, so there is no slack.
My question is this...Can I just add a grounding bar inside the panel or do I need to have a physical wire connection to the new bar from the SER ground?

1. The grounds and neutrals should be separated, sub-panel or not. Technically speaking, your 200a panel is a sub-panel with the outside disco.

2. Neutral current would not be allowed to use the enclosure as part of the current path, but the EGC's can. Bolt the new ground bus to the panel.

2a. If it were me, I'd add a #4 cu jumper between the new bus and a second lug to the same bolt as the SER's EGC (or a 2-hole lug, or a split-bolt, etc.)

 

[ty]

I guess the other guys made some sense of your post, but I'm still a bit confused.

Does the 4-wire SER go from a 200a main breaker disconnect to a 200 amp panel inside and you want to install a sub from there?
Or is there a 200amp main breaker loadcenter outside with a 4-wire SER going to a sub-panel of some size inside?

 

[Oakey]

Sometimes I have trouble with the English language my apologies.. which is why I try and shoot photos.
These gents did nail it (thx guys!

)
I have a 200 main breaker disconnect outside ,from there a 4/0 SER running to the main panel which is about 60 ft away from the meter and Disc.
So basically I have a sub which needs a sub...