@Merlin
Because it's smart.
The neutral wire coming into our house broke. the ground wire was non-existent.
A lot electronics that could not handle 240VAC fried because our house was suddenly all 240VAC.
Stuff fried and melted.
Run that ground.
@teengee @Merlin
This was not good. Electricity is sneaky. Have recently upgraded 2 panels on 2 houses - by my Union Master Electrician friend. Including 2 new ground rods each, and grounding to both sides of the water meter on copper pipes. Also whole a house GCFI and Arc-Fault breakers where required.
I feel much better.