Quick Wiring Question

[Robertw813 0]

I'll be running a bi-amp setup in the near future. As of right now the amps will be:

Memphis MC3004 (75x4 @ 4 ohms)

Memphis ST or MC 1000D (600x1 @ 2 ohms)

Part 1:

I have never done a bi-amp setup and was curious about the power wire. If I run this through a fused distrubution block, do I need an in-line fuse between the positive battery terminal and distribution block, or will the individual fuses in the block suffice?

Part 2:

I figured up the current draw on both amps based on the sticky in this section. It looks like:

MC3004 will be drawing 32.5A

1000D will be drawing 44A

I am currently thinking that I will run a 0/1AWG wire from the battery to the distro block, then 4AWG to the amps. I think 4AWG will be more than enough to carry the current but I could be wrong. As far as fusing the power lines should I just use a 40A for the 3004 and a 50A for the 100D?

Thanks.

-Rob

[ANeonRider 3]

1. Always fuse the main power wire within 18" from the battery, or before the firewall.

2. 1/0 gauge, then 4ga to the amps will be fine.

I fuse for the wire's current carrying capacity.

1/0ga = 300A fuse

4 ga = 125A fuse

[Robertw813 0]

Thanks Neon.

If you fuse for the wires current carrying capacity are you just counting on the amp's fuse(s) to blow if it gets to much current? What I mean is if I for some reason I got 80 amps of current on one of the power wires it wouldnt blow a 125A fuse, but it would blow the 40A fuse in the amp. That sound right? I guess I was always brought up to fuse for close to the items needs.

Sorry if I go to far in depth on this stuff sometimes, I just need it broken down Barney Style.

-Rob

**edit**

Forgot to ask how you figured up the wire's current carrying capacity. Seems like useful information.

[Acidburn 10]

the fuse(s) in the amp(s) are to protect the amps

the fuse(s) in the wire(s) are to protect the wires