Looked at subdivision house yesterday for the Seller, built in 1986. Both were GE 125 Amp panels.
Service panel on exterior did not have visible ground/ground rod, etc. The only conduit to the ground was under meter can. No notations for ‘ufer’ ground.
Sub distribution panel on interior had lots of internal paint/drywall overspray. Someone had scrubbed the paint off an upper corner of the neutral bar and inserted bonding screw. Left a note in panel ‘Bonding screw, do not remove’
They had also taken a piece of multistrand and screwed one end to the back of the panel; the other end screwed to the bottom of the neutral bar. Note here, too, ‘do not disconnect this ground’.
Infomation is that an electrician did all this when the buyer purchased the house 6 yrs ago.
I refered for further evaluation by electrician.
The subpanel bonding screw and added grounding strap cancelled the separation of neutral and ground. Right ?