Help me understand the value of a circuit ground
Okay, so here is a question that applies to most old houses.
The service panel is new, updated, a ground rod is installed, etc. New circuits are easily and effectively grounded if pulled. Yet, most circuits are not grounded simply because the wire pulled is a 2-wire variety.
User has a computer plugged into a legal GFCI "no equipment ground" outlet. Although user may not be vulnerable to shock, equipment still has no path to ground and is vulnerable to surges.
Now let's say that an electrician installs a whole-house surge protector.
Now, the user is protected from shock and the equipment is protected from surge, overcurrent, etc. What value is added by having a ground wire connect the receptacle to the service panel?