HOLDENS RULE
Amp power wire keeps melting fuse holder in engine bay,wtf
hey all,just wondering if anyone has any ideas why the power wire fuse holder under the bonnet keeps melting,i mean the fuse holder itself keeps melting,its 8 gauge,running a 4ch 1000w boss amp,which is running a 15inch kicker,bridged of course and a pair of 6x9's.do i need to upgrade the gauge from 8 to better,wat does everyone suggest?any help would be much appreciated,cheers
the holden mechanic
you need 4 gauge to run that size amp
HOLDENS RULE
cheers mate,thats wat i thought,do you think its worth getting a capacitor or dont worry about it?it will be louder with 4gauge as well wont it?
the holden mechanic
a capacitor just keeps a constant power supply pretty much. and no i dont think the sound quality will be any better
HOLDENS RULE
cool,cheers mate,appreciate it.wat about a 4ch 3200w amp,just running a single 12inch pioneer,not bridged though.4 gauge or bigger?
the holden mechanic
ask sir_psycho_sexy about that one.... im not too sure
WA's ASR Rep
wat sort of fuse holders were u using? they werent some cheap holders that rnt heat resistant r they?
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HOLDENS RULE
stinger ones,ones that camr with the kit
WA's ASR Rep
no worries some ppl buy the cheap stuff on ebay n usually wonder y things keep happening 2 them lol but as suggested upgrading ur power wire would prolly help. makes sure every things hooked up n running right also wouldnt hurt 2 double check incase thats another reason y they r melting
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HOLDENS RULE
yeh it definately will help,i know a fair bit about stereos and installing them,always putting stereos and hu's in for mates,but havent come across this problem before,had a thought that it might be the power cable getting 2 hot from all the power being drawn,so would definately be wiser to change it to 4gauge,hopefully that fixes the problem.cheers for ur help though mate
I have 8gau wiring on my 1600watt mono amp... no worries. If your wiring doesnt fix things have that BOSS amp checked.... theyre quality is well known
wtb: rockford fosgate sub rfp 3412
You won't need more than 8ga for that amp. Plus increasing the wire size won't effect the fuse holder at all. What size fuse is in the holder? The holder will only melt if the fuse is getting too hot (too much current draw) or there is a poor contact in it (resistance).
Originally Posted by goldvnaero
In the short of it the HIGH CURRENT is causing the problem, through the fuse block...... can out the fuse block to a better unit....
Agree with Peanut with the 4 guage, as most 8 guage will only run upto 600 watts max... and some of the aeropro are only rated for 300 and others 600.
Cap would be useful, though not essental.
Stone is right with the FUSE as you have an issue there, but the bigger guage will take the heat out of the system, but not the fuse holder.... and increase current effectiency... VOLTS..
What are you running an AGU or ANL ... most likely a AGU on the 8 GA.
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WA's ASR Rep
if the fuse didnt have enough amps 2 wat its suppose 2 have wouldnt the fuse itself just blow/melt rather then the whole fuse holder??
goldvnaero did the fuse inside melt also???
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Not a valid input....
I'm going to go with Stone on this one.
If you consider that 8ga is rated for Aprox 50A then it should 700wrms all day long.
There is no way in HELL that a BOSS 4CH is going to put out 700wrms. Replace your fuse holder.
Don't forget that stinger had a bad batch of fuse holders for awhile. I had one that was continously popping fuses. Turns out one end was slightly larger then it should've been and was causing a high resistance joint which was sending the current levels through the roof.
I had one and a mate had a run of 3 of them!
Few other things to consider...where in the engine bay is fuse holder located? Could it be resting against something that gets extremely hot? Also, tighten the hell out of screws where the wire goes in. If thats not as tight as it could be you will get a high resistance joint and that will get HOT
You put you left foot in, your put your right foot in , you take your left foot out and you slide it all about!
isn't this really simple?! whats breaking? the wire or fuse holder? so maybe test the resistance of the holder with a DMM?!?!?!?!?!?!?!? if its bugger all wouldn't that point to getting a bigger fuse to rateed just under the cable?
Not a valid input....
It's not that simple. You have to know HOW and WHERE and at what amplitude to check it. Checking it whilst it's static will probably show no resistance.
You put you left foot in, your put your right foot in , you take your left foot out and you slide it all about!
well what do you mean by how?
and i didn't know dc had a changing amplitude.
could you please explain this, i think i am missing something.
Not a valid input....
How? Exactly that..what point do you have to reference the resistance against?
The more current you pull through the fuse the higher the resistance is going to get. The question will be...whats acceptable and whats not acceptable?
You put you left foot in, your put your right foot in , you take your left foot out and you slide it all about!
12voltking...... it really depends if they have used cheap arse 8ga, as you would be will aware you only have to compare RF or Stinger to some like aeropro and there is a difference..... let alone half the crap on EBAY that is not OFC or half the thickness or wire count.
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ALPINE PIONEER Rockford Fosgate Scosche EFX JVC SONY INFINITY
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I'm with Stone here - I'll bet it's a resistance in the fuse holder that's causing the heat. It doesn't take much DC resistance to consume a good 10-20 watts at these kind of currents. BTW - formula for power consumption : P = I2R (that's "I {squared} R")
So, if you're drawing an average current of 10 amps, you only need a resistance of 0.1 ohms to be consuming 10 watts. There's not anywhere near enough heat radiating surface in a fuseholder to get rid of 10 watts, so eventually it will heat up to the point where the plastic melts.
Before you actually replace anything, re-terminate the cable into the fuseholder at both ends, make sure all the terminations are CLEAN, and try again.
Cheerz!
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HOLDENS RULE
hey all,and thanks for everyones input,just the fuse holder itself was melting wrx884,40amp fuse in it.fuse was fine,just the holder melting.
Running an AGU as well car audio factory outlet
Not a valid input....
But he has already said it's Stinger.
Besides, there are only a few cable manufacturers in the world...same shit different white name on the side.
You put you left foot in, your put your right foot in , you take your left foot out and you slide it all about!
hehe thanks for the referencethough i don't have an answer.
i'm agreeing with stone, 8 gauge is completely sufficient for this amp ( i own the same amp running off 8 gauge) it may say 1000watt but its most likely under 100wrms.
My only thought would have to be a current leakage (or short circuit) somewhere on the power lead for the amp.
that doesn't make sense, the battery is 12V so more resistance means less current flow.
i wouldn't think even aerpro would have OFC
no it wouldn't
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