I have a Polk Audio MOMO C400.4 that im planning to use to power my MOMO 6x5 components and MOMO 6x9's @ 75w RMS x 4. I also have a Kenwood KAC-7202 that i plan on running bridged which will pull 460w RMS @ 4 ohms. What size fuze will I need for 4 gauge wire? I have a 4AWG wire with a Rockford Fosgate distribution block that splits from 4AWG to 8AWG with AGU fuses on it, unknown size Would I still need a inline fuse to the battery?
I always put an inline fuse, but that could just be me. You can add up the fuses on your amps to determine the total (in this case 100 amps).
always place an in line fuse the the amp wiring ; as close to the battery as possible . consider this if the amp wire gets pinched or drilled though then a short to ground exists . you want the in line fuse at the battery to blow so the wire does not heat up and possibly burn your car down. Add the total current requirements and use that size fuse and appropriate holder; in your case 100 A . Ps it is extremely important to have an in line fuse at or very near the battery.
The fuse near the battery is more important than the d-block fuses. One amp is 60A, the other's 40A - so logically you'd want a 100A fuse at the battery and a 60/40 in the d-block. 4 awg main and 8's out should be fine assuming you only have a few feet from the d-block to the amps.
