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Hey guys,
My general understanding from some reading is that I should use a circuit breaker equal to a given amp's current (and add together for several amps together). So if I had 2 amps each pulling 80A max, I should use a circuit breaker 160A within 12" or so of the battery.
However, my MTX Thunder 81000D says to use a 150A fuse at the amp (as there are none built in) and also a fuse (or in my case a circuit breaker) at the battery. Similarly, my MTX Thunder 1004 says to use a 150A fuse at the amp and a fuse at the battery. The manual says that the 150A at each amp is for overdrive protection of the amp itself while the fuse (or breaker) at the battery is "to protect the electrical system".
So, do I need both?
Let's assume I need both. So, the total max current draw of these amps is 300A (150Ax2). I can't find any 300A circuit breakers. Seems that 200A is the limit.
What's strange to me is that my Arc 5150XXK doesn't have built in fuses, but its manual only tells me I need the one fuse within 18" of the battery.
Is this a case of just differing opinion? What do the pros think?
I'm trying to piece together an order for this system, and it's taking forever to figure out exactly what I need to buy up front. 1/0 is not friendly stuff, and none of the accessories that go with it are either!!
Thanks,
Danny
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