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Discussion Starter #1
So I'm running the power cable from the front battery to a fused distrobution block in the trunk, then to a trio of pdx amps.
2x f6
1x m12

The f6 is internally fused at 2x30 amp fuses and 4x25 for the m12. My question is, what size fuses should I use in the distro block for each amp?
 

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Discussion Starter #3
Fuse for the wire, not the amp. What AWG goes to the amps, and how long are those runs?
I have a 13ft run of 1/0 going to the distro block in the trunk, then I'll be using 4ga to the amps.
Those runs will be 6-12 inches
 

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Since they're D class amps, their efficiency is probably around 80%.

I was just researching this same question myself. There's a good tutorial put out by one of the guys on YouTube explaining how to factor the size of fuses.

Here's the link:

https://youtu.be/0H005TcKHKo

Should help!
 
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