Fuse Question

I just ran tsunami 1/0 gauge power wire in my car.  I have it tun from my battery to my capacitor, then from cap to distribution block ect.  I bought 2 100 amp ANL fuses because the total amperage drawn from my two amplifiers will be 105 amps.  I only had one of my amps hooked up, and it has only one 30 amp fuse.  When I put the fuses in the power wire after I was done installing everything,  It sparked, (like normal) but blew, both fuses.  Should I have a higher amperage fuse with 1/0 gauge power wire?  I read in The Car Stereo Cookbook that the size of the fuse should be derived from the sum of the number of amps of power drawn from all amplifiers in the system.  Is this true?  Any help would be much appreciated.

I know it is not touching the ground anywhere.  Cause my brother was messing around befor i put the first fuse in.  He set it on the terminals of the fuse block and it sparked like a mo fo.  But the fuse was not broken, just brown in color.  So I unhooked the battery and put the fuse in and then hooked up the battery again.  I wa able to listen to music a couple of time.  But when I got in my car later today, it didnt work.  When I checked the fuse, it had blown.  I think maybe it had blown because it was weakened when my brother was messing around with it.