I have a Rockford 200 a4 and an 800 a4. I run 4 gauge power wire from the battery to a distribution block. From the block I have 2 8 gauge power wires running to the amps. My quewstion is the 200 a4 calls for a 30 amp inline fuse and the 800 a4 calls for a 60 amp fuse. I currently have a 60 amp fuse on the 4 gauge power wire running into the distribution block. Do I need to put another 30 amp fuse after the distribution block?