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caboose · 08-20-2008, 09:35 AM

Considering there really is no topic, it's hard to stay on one.

And we did help him, we told him to fix his ground wire and then to see what happens.

neonmike · 08-20-2008, 11:58 AM

the reason he is melting fuses is because his inline fuse is bigger than the fuse in the amp. He has the amp wired down further than it is supposed to be and thus overheating the amp which is not only blowing but melting the fuse. If he had the correct fuse inline it wouldnt be a problem because it would blow that fuse first if he was drawing to much current like he currently is doing.

caboose · 08-20-2008, 12:05 PM

Quote:

Originally Posted by neonmike

the reason he is melting fuses is because his inline fuse is bigger than the fuse in the amp. He has the amp wired down further than it is supposed to be and thus overheating the amp which is not only blowing but melting the fuse. If he had the correct fuse inline it wouldnt be a problem because it would blow that fuse first if he was drawing to much current like he currently is doing.

the inline is suppose to be bigger than the one in the amp... by a lot

neonmike · 08-20-2008, 01:24 PM

Quote:

Originally Posted by caboose

the inline is suppose to be bigger than the one in the amp... by a lot

ummmmmm wrong it is supposed to be equal to the rating of all combined fuses in the amps that your running. ie if you have two amps one has a 30 amp fuse and one has a 20 amp fuse you should have a 50 amp fuse inline. if your giving out advice like this i wouldn't let you mow my lawn.

efhondakid · 08-20-2008, 01:49 PM

I havent been driving the car lately, and I havent done anything with it yet, but Im going to go with what people have been saying. Smaller inline fuse, bigger ground wire.

caboose · 08-20-2008, 03:23 PM

Quote:

Originally Posted by neonmike

ummmmmm wrong it is supposed to be equal to the rating of all combined fuses in the amps that your running. ie if you have two amps one has a 30 amp fuse and one has a 20 amp fuse you should have a 50 amp fuse inline. if your giving out advice like this i wouldn't let you mow my lawn.

The little fuse that's in the back of the amp is only like 20a. If you ran 20a in line with your amp wires you would blow it.

caboose · 08-20-2008, 03:26 PM

Here's how to determine in line fuse ratings

Cable Gauge Chart

neonmike · 08-20-2008, 04:05 PM

ok so you showed a chart on how to determine what gauge wire to use do you want a cookie, cause that still doesn't show anything about a fuse size.

caboose · 08-20-2008, 04:10 PM

Well thought that was kinda self explanitory. The amps required by your system is on the left. You pick your wire gauge based on that. The current (amps) that travels through the wire to the amp must pass through the inline fuse. If you don't run a big enough inline fuse, then you are going to blow the fuse before you reach the maximum current that is allowed through the wire.

I'll take my cookie now bitch.

phoenix19l · 08-20-2008, 04:12 PM

If your amp uses 50a fuses, then put a 55a or 60a inline fuse as close to the battery as possible. I would just use the same size fuse or just slightly bigger.

George777 · 08-20-2008, 04:17 PM

He only THINKS he knows everything. Unlike his title, most of us know the difference.

Neonmike, don't you do this stuff for a living, or have done it as a means of livelihood before?

neonmike · 08-20-2008, 04:25 PM

yep this is what i do everyday. been doin it for about 12 years now but i have no idea what i am talking about.

jmanpc · 08-20-2008, 04:29 PM

Well I hate to burst some bubbles, but the inline fuse doesn't necessarily have to be bigger or equal to the amp's fusing. If you have an amp fused at 50A and put a 100A fuse on it or if you're running an amp fused at 50A and use a 40A fuse, you're not putting your amp in danger. The only consequence of having a fuse too small is that the amp can pull more current than the fuse is designed for, and pop it. It won't harm the amp, but could be annoying.

The purpose of the fuse under the hood is to protect your battery, alternator, and the rest of your electrical system. If your power wire's jacket is worn through, and the wire grounds out, the fuse under the hood protects your electrical system. The fuses on your amp, on the other hand, are to protect your amp from a short. Again, in the event of a short, the fuses will pop.

Another reason amp fuses pop is that your amp is pulling more current than it is designed for. This is often caused by wiring the amp to an ohm load lower than what it is designed for, or cranking the gains to the point that the amp is forced into clipping. One other reason amp fuses pop is that an internal component of the amp has burned out and is causing a short circuit.

neonmike · 08-20-2008, 04:35 PM

Quote:

Originally Posted by jmanpc

Well I hate to burst some bubbles, but the inline fuse doesn't necessarily have to be bigger or equal to the amp's fusing. If you have an amp fused at 50A and put a 100A fuse on it or if you're running an amp fused at 50A and use a 40A fuse, you're not putting your amp in danger. The only consequence of having a fuse too small is that the amp can pull more current than the fuse is designed for, and pop it. It won't harm the amp, but could be annoying.

The purpose of the fuse under the hood is to protect your battery, alternator, and the rest of your electrical system. If your power wire's jacket is worn through, and the wire grounds out, the fuse under the hood protects your electrical system. The fuses on your amp, on the other hand, are to protect your amp from a short. Again, in the event of a short, the fuses will pop.

Another reason amp fuses pop is that your amp is pulling more current than it is designed for. This is often caused by wiring the amp to an ohm load lower than what it is designed for, or cranking the gains to the point that the amp is forced into clipping. One other reason amp fuses pop is that an internal component of the amp has burned out and is causing a short circuit.

yes you are right it does protect the battery but you are not supposed to put a 100 amp fuse in it if the load is only 25 or 30 amps, because when you do wire the amp up so the ohm load is more than the amp can handle it is supposed to pop the front fuse before the one at the amp when it draws to much current. hence the point of fusing it as close to or a little above the fuse rating on the amp.

jmanpc · 08-20-2008, 04:38 PM

Quote:

Originally Posted by neonmike

yes you are right it does protect the battery but you are not supposed to put a 100 amp fuse in it if the load is only 25 or 30 amps, because when you do wire the amp up so the ohm load is more than the amp can handle it is supposed to pop the front fuse before the one at the amp when it draws to much current. hence the point of fusing it as close to or a little above the fuse rating on the amp.

The one on the amp should be the first one to go. That's why they're there... to protect the amp. The one up front is to protect the battery.

neonmike · 08-20-2008, 04:46 PM

ok so your sayin that i have an amp with a 30 amp fuse in it it is ok to put a 100 amp fuse in the front? If that is the case why do they make all the different size fuses for the inline holders, why don't they just sell a 200 amp fuse for up front for every single amp kit ever produced. thats right cause it is supposed to match with the amperage you have with all the amplifiers you have added up.

George777 · 08-20-2008, 04:50 PM

http://www.doingitwrong.com/wrong/20070515-003414.jpg

neonmike · 08-20-2008, 04:55 PM

Quote:

(the IASCA rule is within 18"). VERY, VERY IMPORTANT!!!!! This fuse protects your vehicle from burning up in case of the power wiring shorting out. The wire between the fuse and the battery terminal will be unprotected, which is why you want this section to be as short as possible. The fuse size depends on the current the power wire will carry. Consult the owner's manual of your amplifier(s) to find out the maximum current draw of your system. You can also contact the manufacturer and ask them for that information. For multiple amplifiers you will need to add up the maximum current draw of each amplifier. Once you know the maximum current draw you'll know what size fuse to use. For example, if your maximum current draw is 50 amps then you'll need a 50 amp fuse.

Right from the IASCA rules

jmanpc · 08-20-2008, 04:59 PM

Quote:

Originally Posted by neonmike

ok so your sayin that i have an amp with a 30 amp fuse in it it is ok to put a 100 amp fuse in the front? If that is the case why do they make all the different size fuses for the inline holders, why don't they just sell a 200 amp fuse for up front for every single amp kit ever produced. thats right cause it is supposed to match with the amperage you have with all the amplifiers you have added up.

Yes, I am saying it's okay to have an amp fused at 30A on a 100A under the hood fuse. Done it myself. They make different sized fuses because ideally, you want to have a fuse close to your amp's rating. Also, you don't want to have a fuse that will allow more current to flow through a power wire than it can handle. For example, putting 100A through 8awg wire is a bad idea because it will burn up, potentially causing harm to your amp or electrical system.

neonmike · 08-20-2008, 05:01 PM

jmanpc · 08-20-2008, 05:08 PM

Fusing - Car Audio Forum - CarAudio.com

08-20-2008, 09:35 AM	#26
caboose I still know everything Join Date: Aug 2008 Location: Hamilton, MI Age: 20 Posts: 311 iTrader: 0 / 0% Ride: 89 CRX HF, 96 Accord EX, 88 Dodge Daytona Shelbyz T-tops Rep Power: 14	Considering there really is no topic, it's hard to stay on one. And we did help him, we told him to fix his ground wire and then to see what happens. __________________ Formerly the.original.kermit Back from the dead... twice I NEED PARTS!!! http://hondaswap.com/parts-sale-trade-wanted/wtb-1989-crx-parts-161172/#post1079066 Check out my progress... http://hondaswap.com/auto-multi-media/my-1989-crx-project-144941/

08-20-2008, 01:49 PM	#30
efhondakid My name is Byron. Join Date: Mar 2007 Location: Akron-Canton, Ohio Age: 19 Posts: 3,412 iTrader: 0 / 0% Ride: `89 DX Hatch w/JDM B16 Rep Power: 110	I havent been driving the car lately, and I havent done anything with it yet, but Im going to go with what people have been saying. Smaller inline fuse, bigger ground wire. __________________ Dont PM me with tech questions. I will not answer them. Looking for a P28 and B-series turbo parts, PM me.

08-20-2008, 03:26 PM	#32
caboose I still know everything Join Date: Aug 2008 Location: Hamilton, MI Age: 20 Posts: 311 iTrader: 0 / 0% Ride: 89 CRX HF, 96 Accord EX, 88 Dodge Daytona Shelbyz T-tops Rep Power: 14	Here's how to determine in line fuse ratings Cable Gauge Chart __________________ Formerly the.original.kermit Back from the dead... twice I NEED PARTS!!! http://hondaswap.com/parts-sale-trade-wanted/wtb-1989-crx-parts-161172/#post1079066 Check out my progress... http://hondaswap.com/auto-multi-media/my-1989-crx-project-144941/

08-20-2008, 04:10 PM	#34
caboose I still know everything Join Date: Aug 2008 Location: Hamilton, MI Age: 20 Posts: 311 iTrader: 0 / 0% Ride: 89 CRX HF, 96 Accord EX, 88 Dodge Daytona Shelbyz T-tops Rep Power: 14	Well thought that was kinda self explanitory. The amps required by your system is on the left. You pick your wire gauge based on that. The current (amps) that travels through the wire to the amp must pass through the inline fuse. If you don't run a big enough inline fuse, then you are going to blow the fuse before you reach the maximum current that is allowed through the wire. I'll take my cookie now bitch. __________________ Formerly the.original.kermit Back from the dead... twice I NEED PARTS!!! http://hondaswap.com/parts-sale-trade-wanted/wtb-1989-crx-parts-161172/#post1079066 Check out my progress... http://hondaswap.com/auto-multi-media/my-1989-crx-project-144941/

08-20-2008, 04:29 PM	#38
jmanpc Carless Join Date: Aug 2008 Location: Jacksonville, Florida Age: 20 Posts: 38 iTrader: 0 / 0% Ride: Deciding... Rep Power: 0	Well I hate to burst some bubbles, but the inline fuse doesn't necessarily have to be bigger or equal to the amp's fusing. If you have an amp fused at 50A and put a 100A fuse on it or if you're running an amp fused at 50A and use a 40A fuse, you're not putting your amp in danger. The only consequence of having a fuse too small is that the amp can pull more current than the fuse is designed for, and pop it. It won't harm the amp, but could be annoying. The purpose of the fuse under the hood is to protect your battery, alternator, and the rest of your electrical system. If your power wire's jacket is worn through, and the wire grounds out, the fuse under the hood protects your electrical system. The fuses on your amp, on the other hand, are to protect your amp from a short. Again, in the event of a short, the fuses will pop. Another reason amp fuses pop is that your amp is pulling more current than it is designed for. This is often caused by wiring the amp to an ohm load lower than what it is designed for, or cranking the gains to the point that the amp is forced into clipping. One other reason amp fuses pop is that an internal component of the amp has burned out and is causing a short circuit. __________________ "It's better to be pissed off than pissed on." Last edited by jmanpc; 08-20-2008 at 04:31 PM.


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08-20-2008, 11:58 AM	#27
neonmike Senior Member Join Date: Mar 2004 Posts: 547 iTrader: 0 / 0% Rep Power: 29	the reason he is melting fuses is because his inline fuse is bigger than the fuse in the amp. He has the amp wired down further than it is supposed to be and thus overheating the amp which is not only blowing but melting the fuse. If he had the correct fuse inline it wouldnt be a problem because it would blow that fuse first if he was drawing to much current like he currently is doing.

08-20-2008, 04:05 PM	#33
neonmike Senior Member Join Date: Mar 2004 Posts: 547 iTrader: 0 / 0% Rep Power: 29	ok so you showed a chart on how to determine what gauge wire to use do you want a cookie, cause that still doesn't show anything about a fuse size.

08-20-2008, 04:12 PM	#35
phoenix19l Junior Member Join Date: Aug 2008 Location: charleston, sc Age: 22 Posts: 26 iTrader: 0 / 0% Ride: 94 honda civic R, 2001 S10 Xtreme, 1991 240sx Hatchback sr20det Blog Entries: 1 Rep Power: 0	If your amp uses 50a fuses, then put a 55a or 60a inline fuse as close to the battery as possible. I would just use the same size fuse or just slightly bigger.

08-20-2008, 04:17 PM	#36
George777 Resident Fat Ass Join Date: Aug 2005 Location: Ansonia, CT Age: 25 Posts: 1,603 iTrader: 1 / 100% Ride: 90 Hatch, 91 Rex, 85 Yamaha Virago, 82 CB900F Supersport Rep Power: 66	He only THINKS he knows everything. Unlike his title, most of us know the difference. Neonmike, don't you do this stuff for a living, or have done it as a means of livelihood before?

08-20-2008, 04:25 PM	#37
neonmike Senior Member Join Date: Mar 2004 Posts: 547 iTrader: 0 / 0% Rep Power: 29	yep this is what i do everyday. been doin it for about 12 years now but i have no idea what i am talking about.

08-20-2008, 04:46 PM	#41
neonmike Senior Member Join Date: Mar 2004 Posts: 547 iTrader: 0 / 0% Rep Power: 29	ok so your sayin that i have an amp with a 30 amp fuse in it it is ok to put a 100 amp fuse in the front? If that is the case why do they make all the different size fuses for the inline holders, why don't they just sell a 200 amp fuse for up front for every single amp kit ever produced. thats right cause it is supposed to match with the amperage you have with all the amplifiers you have added up.

08-20-2008, 04:50 PM	#42
George777 Resident Fat Ass Join Date: Aug 2005 Location: Ansonia, CT Age: 25 Posts: 1,603 iTrader: 1 / 100% Ride: 90 Hatch, 91 Rex, 85 Yamaha Virago, 82 CB900F Supersport Rep Power: 66	http://www.doingitwrong.com/wrong/20070515-003414.jpg

08-20-2008, 05:01 PM	#45
neonmike Senior Member Join Date: Mar 2004 Posts: 547 iTrader: 0 / 0% Rep Power: 29

08-20-2008, 05:08 PM	#46
jmanpc Carless Join Date: Aug 2008 Location: Jacksonville, Florida Age: 20 Posts: 38 iTrader: 0 / 0% Ride: Deciding... Rep Power: 0	Fusing - Car Audio Forum - CarAudio.com __________________ "It's better to be pissed off than pissed on."

08-20-2008, 05:16 PM	#47
neonmike Senior Member Join Date: Mar 2004 Posts: 547 iTrader: 0 / 0% Rep Power: 29

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