Distribution utilities (generally dealing with MV) can use neutral earthing resistors (NERs) or reactors (NEX) to limit the fault currents of their networks for a number of reasons including:
- Less onerous fault withstand requirements of switchgear, etc.
- Decreased earthing requirements of...
What you are saying about cross bonding is correct, however, cross bonding can be difficult to implement due to geographical/space and cost constraints.
From my experience it is not standard to run a GCC as long as the sheath/shield has adequate fault performance.
Also, the introduction of...
