what are generator neutral earthing resistances

Thread Starter


Joined Jun 20, 2009
what are generator neutrall earthing resistances? Are they necessary for small generators. (3 phase 120/208 volt 24 KW)


Joined Nov 21, 2006
Depending on the situation, location, and type of equipment it is sometimes desirable to intentionally add resistance or reactance or both into the neutral of a generator. This limits the amount of fault current available during a ground fault. It can also provide a means to monitor and warn of a load imbalance before it gets to an intolerable (or unsafe) level.
It would be best to consult the manufacturer of your gen to determine if your installation needs such equipment.