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Old 04-17-2005, 10:25 AM   #1 (permalink)
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what type of fuse do i need?

my freind just bought a amp on ebay and i want to know what type of fuse does he need and how many amps does it have to be.

this is the amp

http://cgi.ebay.com/ws/eBayISAPI.dll...ayphotohosting

thanks for ur help
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Old 04-17-2005, 10:35 AM   #2 (permalink)
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100 amp wafer, and run 4 gauge wire from the battery, don't use 10 or 8 gauge.
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Old 04-17-2005, 10:38 AM   #3 (permalink)
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think 80 would work aswell

800=14.4(A)
55.5=A

100 amps would be too much rite?
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Old 04-17-2005, 11:12 AM   #4 (permalink)
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50 amp fuse for the amp, at your alternator put another fuse at the same rating as your alt.
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Old 04-17-2005, 12:09 PM   #5 (permalink)
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Quote:
Originally Posted by OHWJaJae
50 amp fuse for the amp, at your alternator put another fuse at the same rating as your alt.
what?
50 amps wouldnt be enough(i know amps never run at their true power rating, but being so close would blow the fuse)
theres no fuse at the alternator, because there is no conection with the alt, hes not doing the big 3
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Old 04-17-2005, 12:30 PM   #6 (permalink)
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Quote:
Originally Posted by Anshu
what?
50 amps wouldnt be enough(i know amps never run at their true power rating, but being so close would blow the fuse)
theres no fuse at the alternator, because there is no conection with the alt, hes not doing the big 3
First of all, my bad about the alternator... I'm tired. I meant the fuse at the battery to be the same as your alt. And yes, 50amp fuse is all he needs for that amp.

Good luck with the install Lucan, thanks for the catch Anshu.

Last edited by OHWJaJae; 04-17-2005 at 12:33 PM.
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Old 04-17-2005, 12:36 PM   #7 (permalink)
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Visonik... never heard of this brand...
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Old 04-17-2005, 03:34 PM   #8 (permalink)
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Quote:
Originally Posted by userlain
Visonik... never heard of this brand...
It's crap.
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Old 04-17-2005, 04:37 PM   #9 (permalink)
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the fuses by the battery are mostly for shorts...50 or 70 will work
take a look at the fuses on the amp add the numbers together...it should be a good estimate
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Old 04-17-2005, 04:51 PM   #10 (permalink)
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thanks for ur help guys. yes i know the amp is crap but he doesnt want a sick system.
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Old 04-17-2005, 06:05 PM   #11 (permalink)
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Quote:
Originally Posted by klaymen333
the fuses by the battery are mostly for shorts...50 or 70 will work
take a look at the fuses on the amp add the numbers together...it should be a good estimate
That fuse is to protect your alt. That fuse is to prevent you from sending too much current and to prevent a fire.

Last edited by OHWJaJae; 04-17-2005 at 09:48 PM.
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Old 04-18-2005, 12:17 PM   #12 (permalink)
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um there are two fuse on the amp already, take a look at what they are add em together and thats what you need near the battery, unless your running more than one amp.
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Old 04-19-2005, 03:34 PM   #13 (permalink)
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Quote:
Originally Posted by OHWJaJae
That fuse is to protect your alt. That fuse is to prevent you from sending too much current and to prevent a fire.
if it was to protect the alt...why is in-line with the battery?

it is to prevent too much voltage from going down the line but typically it is from shorting the circuit....same reason houses have breakers...they DO prevent too much voltage...which 9 times out of 10 is because of a short

you sir are a hat
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Old 04-19-2005, 04:26 PM   #14 (permalink)
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Quote:
Originally Posted by klaymen333
if it was to protect the alt...why is in-line with the battery?

it is to prevent too much voltage from going down the line but typically it is from shorting the circuit....same reason houses have breakers...they DO prevent too much voltage...which 9 times out of 10 is because of a short

you sir are a hat

The battery is basically a pump of power, however, the alternator is what is driving your system while the engine is running. The battery is on the same circuit and therefore acts as a reserve...

The fuse at the battery is placed there to prevent too much power from going through the circuit. If too much goes through you're liable to destroy the wire, thus causing a fire or damaging your alternator if you try to pull more power out of it than it can handle. That fuse is meant to be a safety for the circuit as a whole before your vehicles electrical system gets damaged and to possibly prevent a fire.

And eddie was right, if you're only running one amp you only have to use a fuse rated at what your single amp is rated at, kills two birds with one stone. However, I usually place an additional fuse near the amp for what the amp is rated at. It isn't necessary to do it this way and will cost you an extra 5 bucks, but it's just a habit. This way if you ever were to change out amps or add an amp/distro block you don't have to worry about what's under the hood (unless you need to upgrade you power wire). This also keeps most of your troubleshooting in the trunk and not at two ends of the vehicle.

And just an FYI, the fuse isn't protecting you from too much "voltage."

Last edited by OHWJaJae; 04-19-2005 at 06:03 PM.
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Old 04-19-2005, 06:06 PM   #15 (permalink)
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Quote:
Originally Posted by OHWJaJae

And just an FYI, the fuse isn't protecting you from too much "voltage."
my bad amperage/current.....

if you read my first post...i do say "add up the numbers of the fuses on the amps and its a good estimate"


i never said the battery would blow up...i said it would cut the power if the wire shorted
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Diamond D7402 (1600 watts on two Dual 4ohm TDX 12's)
jl 300/4 (bridged to hex drivers in kicks)
eclipse 8455
2500watts = 153.7 dbs
http://www.toyotanation.com/forum/t85694.html
http://www.cardomain.com/ride/836451
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