fuses blowing

I just blew my first fuse and I am not quite sure why. 

I have 2 amps.  One has 2 fuses rated at 30 amps each. The other has one fuse rated at 30 amps.   I know the battery fuse should be the sum of the amp fuses......soooo.......does that mean I add ALL 3 FUSES being 30+30+30, or just 30+30 (since the 2 fuses on one amp are rated the same) ?????

I also installed an LED light that I am running on that power supply (after 2 fuses and a cap).  The fuse blew after I installed the light tonight.  The fuse i had was rated at 50 amps, which is obviously too small. 

WHAT SIZE FUSE SHOULD I GET TO SUSTAIN MY SYSTEM AND LIGHT?   

What is the amperage draw of the LED light?  And does it have its own in-line fuse too?  The general rule is:  every appliance should have its own fuse, every wire that supplies current should have its own fuse, and the wiring must be capable of supplying the power without overheating.  Your system should have a 4 gauge wire from the battery, fused with up to 150 amps to protect that wire (or the combination of every fuse rating in the system it is supplying).  It should run to the capacitor, then on to a distro block.  The block should split to 8 gauge wires to each amp.  Those wires should be fused at up to 100 amps each to protect those wires, or at the highest rating of each amp (in your case one is 60 and the other is 30).  A separate wire from the distro should supply the LED, and a fuse on that wire, too.  That will probably take a 20 amp fuse, but look at the LED and see what amperage it draws.

A fuse blowing is most often an indication of a wiring short.   Get all the wiring and fusing done as shown here, and when a fuse blows next time you will know what caused it.  The closest fuse to the problem will blow.

Ok, i took ya'll's advice and got bigger fuses. I got 80 amp after talking to some more people. That is the best way to do it without spending 60 bucks for the ANL fuse and holder.  

Anyway, the 80's work great except when I plug in my LED light, they blow. I'm not talking after a while, or when I turn the system up. They blow right away, and when I connect the fuse and the housing a lot of sparks fly.   

Why is this little LED light being such a pain in my butt?  Why would one single LED light blow 2 fuses. I have it grounded very well (same as an amp) so that is not an issue.  The only other possibility would be the inline switch. Maybe that is not big enough? 

So HEEEELLLPPP!!!! WHAT IS WRONG??

I checked all my wiring and everything is hooked up correctly. I have the power lead coming off the distribution block. I have the light grounded on a chassis bolt.  

So I already checked the wiring when I went to get a bigger fuse, because that seems to be the only thing left. I have it hooked up like your nice little diagram you gave me bud!  Any other bright ideas? 

Obviously it is something with the wiring, however I am not as enlightened as you in this matter, so you could really help me out instead of berating. 

Anyone else have any ideas about why this light is blowing my fuse? 

i got it. it was a bad switch and wiring.  Some pro guy did it for me... made it look real nice.

I'll have new pics up on car domain soon.  look for a red dodge stratus 2001. C-Dub is the name. 

thanks ya'll PEACE!