Ive heard that under certain conditions, current-limiting fuses can allow for high incident energies when the fault current is low. What can we do in these cases?
Tests have shown that under most conditions, Class J, Class RK1 and Class T fuses can limit incident energies to low levels at typical working distances. The key to acceptable arc flash mitigation is to apply the fuse where the expected level of arc fault current will be large enough to drive the fuse into current-limiting mode.
