If it is determined in step 1114 that the device rating is not greater than or equal to Iadjsym, then it can be determined that the device as failed in step 1116. The percent rating can still be calculating in step 1120.
For LVCBs, it can first be determined whether they are fused in step 1122. If it is determined that the LVCB is not fused, then in step 1124 can be determined if the LVCB is an instantaneous trip LVCB. If it is determined that the LVCB is an instantaneous trip LVCB, then in step 1130 the first cycle fault X/R can be calculated and compared to a circuit breaker test X/R (see example values above) to determine if the fault X/R is greater than the circuit breaker test X/R. If the fault X/R is not greater than the circuit breaker test X/R, then in step 1132 it can be determined if the LVCB is peak rated. If it is peak rated, then Ipeak can be used in step 1146 below. If it is determined that the LVCB is not peak rated in step 1132, then Iadisym can be set equal to Ism in step 1140. In step 1146, it can be determined if the device rating is greater or equal to Iadjsym, or to Ipeak as appropriate, for the LVCB.