fuse size

[jmoneypierce21 10+ year member]

Hey havent been in the car audio game for over a year so kinda rusty but got my new system built...and going to order the knu konceptz o gauge dual amp kit. Just wondering what size fuses i should get for the inline and the ones for the distro block.. Ill be running memphis m3 12's off a m class 1100.1 and m- class 6.5 coaxials off the m class 50.4

thank you guys for all of the help!

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[aliensong]

Have u got answers from our forum ? If yes, you're welcome!

Nice to meet u !//content.invisioncic.com/y282845/emoticons/veryhappy.gif.fec4fed33b4a1279cf10bdd45a039dae.gif

 

[jmoneypierce21 10+ year member]

not sure that makes sense..anyone got an opinion id like to order this today

 

[AlterEgo99 5,000+ posts]

Hey havent been in the car audio game for over a year so kinda rusty but got my new system built...and going to order the knu konceptz o gauge dual amp kit. Just wondering what size fuses i should get for the inline and the ones for the distro block.. Ill be running memphis m3 12's off a m class 1100.1 and m- class 6.5 coaxials off the m class 50.4
thank you guys for all of the help!

Well, fuse size typically relates to the wire size first, the equipment second. Reason being the fuse is there to protect the wire first from burning and subsequently causing your entire ride to burn to the ground. //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

I believe that the standard fuse size for 0 gauge is like 300 Amps. You may go smaller based on your amp manufacturer requirements. I'm using 0 gauge Knu under my hood for the "Big 3" and simply left my 175 AMP ANL fuse in place. Smaller is fine. It's bigger that can be dangerous.

Check out this link:

http://www.caraudiohelp.com/newsletter/fuse_size.htm

 

[jpexpc 10+ year member]

Fuse your wire, not your equipment. I'm running 60a inline fusing right now on my 1600w amp with my Wal-Mart wire because I enjoy my car best when it's not on fire.

 

[AlterEgo99 5,000+ posts]

...I enjoy my car best when it's not on fire.

//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif:laugh://content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif Too true!!

 

[McIntosh 10+ year member]

I believe that the standard fuse size for 0 gauge is like 300 Amps.

1/0 is good for 170 amps.

 

[csu87 10+ year member]

1/0 is good for 170 amps.

no 1/0 is good for 300amps

http://www.knukonceptz.com/productDetail.cfm?prodID=KFX0BK

for the amp, a 120amp fuse should be suitable if its the same model im thinking of

 

[smoka 10+ year member]

Find out what the manufacturer rates the wire at, then add up all of your fuses from your amps.

Use the lower number of the two.

 

[smoka 10+ year member]

1/0 is good for 170 amps.

You just like to cause trouble, don't you? //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

 

[McIntosh 10+ year member]

The National electrical code determines ampacity, not some car audio "specialty" manufacturer. Monster, nor any other can produce "special" copper capable of more ampacity. The weak link is the insulation. Underhood temperatures far exceed the code's basic limits. 90 degrees C is only 194F. There are correction factors for higher temperatures. 1/0 is good for 170 amps at 86F ambient. At 71C (about 160F) multiply that ampacity by .41. That drops it to 170X.41=69.7 amps. Yes there is some conservatism in the code. Wires can get quite warm when the code is followed. Warm as opposed to hot. You're probably not drawing anywhere near as much current as you think you are. Manufacturers lie nowadays. That wimpy switching power supply has no nads. False power claims abound. 746Watts=1HP. Do the math on your ShopVac and I'm sure you'll see a 15 amp breaker couldn't possibly hold. 746/120=6.22 amps/HP. This means the max HP for a 15A circuit is 2.41HP. 5+HP shop vacs abound. They lie.