Blew main 100A fusible link WTF?

[qbase216]

alright heres what happened. I sat in the car today and heard my alternator whining through the speakers, im like hmmm.... never heard that before. Under the hood i have a 0guage wire connecting the battery and alternator so the car still ran fine. I popped open my fuse box and saw that the main 100amp fusible link was blown. Has anybody had this happen before? why would this happen? The extra 0 guage wire should take the strain of my system. Thanks in advance

[xtremeaudio44]

Possibly a short in the power wire somewhere. I have tripped 100A breakers with 2 gauge wiring before. I bumped it up to a 150A breaker and never had a problem since. It also depends on what amperage your amp(s) are pulling. Whining through the speakers is sometimes the result of cheap wires, running all wires next to each other, or bad grounds. It can be a bitch to figure out.

[CvlEngAltima]

not sure exactly which fuse you mean (on the amp power wire, or the car's fuse itself?) but if its the inline for the amp, you need to be running higher than a 100 amp fuse for 1/0 wiring.

[james33440]

well, what amps are you using first? because, getting a larger amp isn't going to make these better. if your amp doesn't need the fuse larger, that could cause it to blow.
did your amps turn on at all? because you just said you heard noise through your speakers.
double check your ALL your grounds when you put a new fuse in. Also, check the voltage of the power line with the car off and then when it's on and do the same for when you actually turn the deck on.

[qbase216]

i actually blew the CAR's main fusible link which is rated at 100amps. I understand that my system can sometimes pull more than 100amps of current but thats what the extra wire going from the alternator is for. I put it there to reduce the strain on the stock wiring. My sub amp is running at 1ohm pulling 1500rms(max volume) and the speaker amp is 80x4rms. The stock car power wire goes through alot of other electronics, if i upgrade the main car fusible link to more than 100amps im afraid something else can get damaged. I still dont understand why it blew in the first place considering i specifically put a 0guage going straight from the alternator to the battery.

[easternjane]

Oh crap I just bumped my thread about this.

I read somewhere you have to have a fuse on that 1/0 guage wire you running from the alt-to-batt.

Do you have a fuse on that wire your ran?

[Brian Passarelli]

umm, im not going to call you names, but lets just say you are being a wise ass. Putting thicker cable where you are saying you are, and putting thicker cable in general, is not going to reduce the strain and reduce the load on the fuse, rather it will increase it. Less-thick wire has higher resistance. The higher the resistance, the less current (meas. in AMPERES). The fuseable link for alternator that goes to battery/ your accessories has a maximum amount of current before it heats up enough (over an 8 second time frame or less) to melt, breaking the connection. Once this happens, you should only be running on your battery, which will be fine for about an hour. Whence, when you increase the thickness of wire, you are able to put more current into that fuse, which, if you have been running equipment that wanted 100amp or more, but couldn't because of lowsy wires, now they will draw that current, and the fuse will blow.
You definetly will need a higher fuse, but not too much higher than stock since you are really, it would seem to me, just trying to get current from alternator, and it can only put out so much. for example, you'll never need a 200 amp fuse, even if your system wanted all the amp of battery (ex: 600) plus 200 more... you would only probably get around the alternator's max output of 80-100 amps + 600 from battery (800). That's 10.8 kiloWatts max power draw!

Maybe you have a short/poor connection somewhere?

[Pimpinalty]

^^^

:P

Hey brian have you gotten you pr cai from that group buy yet?

[Brian Passarelli]

no I haven't.... what do you think about that?

and yes, that post was gay, I was trying to suppress my anger , and it came off gay.. just trying to be helpful!

[Pimpinalty]

Hehe I was just messin with ya, apparently someone from that post got theirs I'm not at my house right now I'm back at my parents house for the holidays but I'm going back up today so hopefully it will be there or it will be waiting at the post office for me :P I can only hope

[SETH OVA HEA]

i thought about running + wire from alternator to battery, but i think ill screw it up somehow. is the fuse the colored thingy with the 2 metal clips in it? if so does it go in the box next to the battery? 01 gxe. i was gunna get the same gage as my other power wire. i just connect the wire from + alt to the + battery? no special other connections i should know about? i think i have 2 gauge.

[Brian Passarelli]

u didn't say enough !! : ) what are u trying to do

[SETH OVA HEA]

me brian?? well i was gunna run the wire to help the amp and stuff out. but im not sure how to do it. pm me or im and lemme know er something

[Pimpinalty]

Seth all you have to do is get whatever gauge wire that you want to use and put an O- ring crimp cap on each end then connect it to the battery + and then run it AWAY from the engine itself over to the alternator + screw it down and your amp will be happy.

I dont know if you said this early but what is the wattage ratting on your amp?

[SETH OVA HEA]

i ready yer post wrong. i thought ya said run wire over alternator to amp...anyways...the amp is 900 watts. where on the alternator cause i have a ground wire on the negative terminal