How does the customer know if a cable has faulted, and the cable limiters for it have opened? If there are say 2 other cables that are still in service supplying the load. Everything would look to be normal, but for one phase only has 2 functioning cables vs 3 functioning cables for the other two phases. You may have eddy currents if there are three conduits, each with 3 phase cables, and one of the conduits has a dead phase. How would the customer know that there is a problem that needs to be fixed? If he chooses to ignore it, well that's another issue....
