Talon4
65' #8 awg wire, that's kinda small wire for the distance. I am just guessing but the electrician installed 8-3 with/ground nmc, romex, for your sub panel feed. 2 hots, 1 neutral, and bare ground. The bare ground is terminated on the neutral/ground bar in your main electrical panel, just where it should be. Your sub panel is 120/240 volt, 40 amp rating.
Star grounding, "Nsgarch" said it well.
Inside your sub panel there is a separate bar for grounding. This ground bar is where the electrician connected the bare grd wire from the #8-3 w/grd feeder. This grd bar is also were the branch circuit equipment grds connect to. A common ground point, star ground.
No separate ground rod for a sub panel.
Jim
65' #8 awg wire, that's kinda small wire for the distance. I am just guessing but the electrician installed 8-3 with/ground nmc, romex, for your sub panel feed. 2 hots, 1 neutral, and bare ground. The bare ground is terminated on the neutral/ground bar in your main electrical panel, just where it should be. Your sub panel is 120/240 volt, 40 amp rating.
Star grounding, "Nsgarch" said it well.
Inside your sub panel there is a separate bar for grounding. This ground bar is where the electrician connected the bare grd wire from the #8-3 w/grd feeder. This grd bar is also were the branch circuit equipment grds connect to. A common ground point, star ground.
No separate ground rod for a sub panel.
Jim