Exactly what the subject says. I have a JL 500/1 and 300/2 and they are being fed by a distribution block with 2awg input and 4awg output. What size fuses should be in the distr. block?
Vice President - NEJBody
2007 Cobalt SS
2001 Sunfire (retired)
Easiest way is to add up the sizes of the fuses on the amp and use that size fuse in the block.
-Chris
I wouldve done that if there were external fuses.
Vice President - NEJBody
2007 Cobalt SS
2001 Sunfire (retired)
do the instruction manuals not say?
if not...fuse for the size wire you are running.
MAX fuse you should use...
125 amp for the 4 awg.
200 amp for the 2awg.
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According to the owners manuals, use a 50 amp fuse for the 500/1 and a 40 amp for the 300/2.
-Chris
ah thanks
ive got a 100amp in the main 2awg line right now
Vice President - NEJBody
2007 Cobalt SS
2001 Sunfire (retired)
So, what you are saying is that if I went and put two 60amp fuses in there, it is not sufficiently protecting the wires?
It's 2awg in 4awg out x2
and the fuses on the amps protect the amps, fuses in the distr. block protect the wires?
Vice President - NEJBody
2007 Cobalt SS
2001 Sunfire (retired)
actually, anything less than what the wire can hold is sufficient to porotect the wires, you just won't get full use out of them. Like if your wire can hold 150 Amps and you put a 100 Amp fuse in, when the wire carries more than 100 amps, the fuse will blow and the circuit will be broken. So hence the line is still protected even though you not using the whole 150 amps that is possible.
if you have 2-60 amp fuses in a distribution block like I do, then the most that will follow either branch is 60 amps, and assuming that you are able to max out both (which is extremely unlikely with only the two amps) then your main wire from the battery to the distribution block must be able to handle 120 amps as that is the maximum possible given those two fuses.
also, the amount of power pulled by the amps is dependant on how loud you want your music since you have to have more power to output more power (by the factor of the gain). So if you happen to blow those fuses, then you can turn up the gain some to require less power but put out the same amount of sound. The biggest problem with this is that you'll end up with more distortions. The higher the gain is the harder the amp has to work so be careful of your temperatures and make sure you aren't burning up your amps.
That makes a lot more sense. I never had that explained to me. Thanks!
Vice President - NEJBody
2007 Cobalt SS
2001 Sunfire (retired)
thanks for saving me allot of time gieldamj lol
i prefer to buy a larger fuse to protect the wire, this way if i ever change amps my wire is fine and so is the fuse. some people will just buy a new fuse, but those things run up to like 5$ for one depending on where you buy, and maybe its just me being cheap, but ive never blown one or had to buy another so it makes more sence to me to buy the larger sized fuse.
http://www.flickr.com/photos/sndsgood/ https://www.facebook.com/#!/Square1Photography
yeah, i needed ANL fuses for the distr. block and YEAH they are expensive
Vice President - NEJBody
2007 Cobalt SS
2001 Sunfire (retired)
I blew an 60 amp inline from my batt to my distr. block within 12 hours of having my system in my car... so I put an 80 amp in... a month later I blew that on the end... so I went and put a 100 amp circuit breaker in under the hood... haven't had a problem since... and I have had 2 - 60 amp inline fuses in my distr. block the whole time...
ur welcome sndsgood... I knew that one day my $35K/year engineering education would be worth something... now if only I was going to become an engineer instead of an Professor of Economics
