16 years ago
neutral at the transformer. The neutral is also grounded at the service
entrance on the customer side. Obviously this makes a parallel path, that is
the neutral conductor and the higher resistance earth are in parallel.
The problem is that if the neutral conductor is opened the transfer switch
for an onsite generator does not sense this. The loads in the building
suddenly are connected in series with bad results unless the load is
Is there a way to sense the loss of the neutral connection and then tell the
generator to start and take the load?
Simple relays wont work because they would also be in series and not drop.