Don, cable limiters are required to be installed on three or more sets of service conductors on our downtown network . We install them on our end of the service lateral and the electrical contractor is required to install them on the load end of the service lateral. The interesting thing is that we do require them to be installed where the service is off the downtown network. The situation that Bob has would not have been protected by cable limiters unless the customer wanted them.

The reason we require cable limiters on our downtown network is the loss of a building where one set of several parallel sets of conductors faulted. The current from the remaining parallel sets fed the fault by going through the service bus and back to the fault. This burnt up the service equipment and the building as well. We got to pay for part of the building since we didn’t do anything to prevent this situation from happening. I suspect we will start requiring cable limiters on outlying services as soon as we have to buy a portion of one. [Linked Image]

- - - - - - - - - - - - - - - - - - - - - - - - - - -
Charlie Eldridge, Indianapolis, Utility Power Guy

Charlie Eldridge, Indianapolis Utility Power Guy