First, for projected data reported on the FR Y-14A/Q and for actual data reported on the FR Y-14A/Q/M reports, collectively, the CFO (or equivalent senior officer ) of a LISCC U.S. IHC would be required to attest that the reports have been prepared in conformance with the instructions issued by the Board.
The purpose of fuse is to allow a minimum current necessary for the function of the equipment and the current carrying capacity of the connecting wires. When the current exceeds this minimum value, the metal wire in the fuse, melts and the circuit is open (switched off automatically).
Similar to a short circuit, large amounts of current are forced to flow through the fuse or circuit breaker, causing a fuse to blow or a circuit breaker to trip. In the same way as the short circuit, you will be hard pressed to learn the cause without doing a little investigating on the circuit with the trouble. As you may or may not know, some fuse can only handle the current capacity they are valued at, like 20 amps for a 20-amp fuse.