External building (Shed), with NO water supply or pipes going to main building, 120/240VAC 60A Underground service, 115 feet away from main. 8' Copper Electrode at BOTH buildings. In THIS case I would think A BONDING to the N-Bus to be correct as the Main house is far away and no pipes connect the two. So a ground to the house would not be preferred by electricity over the local ground rod. Furthermore, Any Electricity or faults from the House (MAIN) would prefer to go to the Main's Local grounding rod and water pipes over traveling all the way to the Sheds Ground rod. At all time keeping the ground INSIDE the underground conduit NON-Charged, as well as any service ground remaining UN-Charged such as phone and appliances.
Now If there were pipes connecting the 2 buildings then the N-Bus would NOT be bonded as a fault could prefer the Pipes ground over the Rods grounds, traveling through the non-Fused water pipes looking for the First Ground which may result in being the plumber.
If I were installing a sub-panel IN the House I would NOT bond as a fault might travel through the ground wire or the Neutral and cause a possible shock or a 240V load to the 120V circuits risking a fire. Do I have it right?. Or am I still way off?
____________________________________________________
NEC code rule#1) If it is easier.. its wrong.
NEC code rule#2) If it is cheaper ... Its wrong
NEC code rule#3) Pay your inspector and see rule#1
Now If there were pipes connecting the 2 buildings then the N-Bus would NOT be bonded as a fault could prefer the Pipes ground over the Rods grounds, traveling through the non-Fused water pipes looking for the First Ground which may result in being the plumber.
If I were installing a sub-panel IN the House I would NOT bond as a fault might travel through the ground wire or the Neutral and cause a possible shock or a 240V load to the 120V circuits risking a fire. Do I have it right?. Or am I still way off?
____________________________________________________
NEC code rule#1) If it is easier.. its wrong.
NEC code rule#2) If it is cheaper ... Its wrong
NEC code rule#3) Pay your inspector and see rule#1