Why residential electrical system must be connected to Earth(soil)?

[gen x]

Why is grounded electrical system safer than isolated system?

 

[Averagesupernova]

Have you done a search here on PF? It's been discussed. You will get the same answers from the same people in this thread that have previously explained it.

 

[gen x]

Have you done a search here on PF? It's been discussed. You will get the same answers from the same people in this thread that have previously explained it.

No, maybe someone can put a link.

 

[DaveE]

google, dude. It works great...
https://staleyelectric.com/understanding-electrical-grounding-and-how-it-works/
https://en.wikipedia.org/wiki/Ground_(electricity)

 

[Baluncore]

Why is grounded electrical system safer than isolated system?

Because a common ground connection protects the insulation, by preventing overvoltage, that might break it down.