Say you have customer that has been in business for 50 years and is served with a 100 kva bank. The utility has a new customer next door and the load requires the utility to increase the bank to 1000 kva. The fault is going up but what is the utility to do. It has to provide the service to the new customer. There is no requirement that I know of that requires the utility to do anything except maybe notify the old customer of the possible problems. The utility probably doesn't even do that.
