What size fuses to use??

[ExplicitUrSelf 10+ year member]

Hello, I just placed an order on the SSA store for a sundown SAZ-1000.1D And i am in process of purchaseing some fuses and wold like a bit of help. Im running a 4 Guage from the front battery to a ANL fuse holder and it runs back to a mini ANL fused distributor block along to my two amps which will be the sundown SAZ-1000.1D(not shure what fuses it caries) and a Cadence Xenith series amp for my front components(This amp has a 30A fuse on it). What size fusing would you guys suggest me to use on my ANL fuse holder and my mini ANL fused distributor block?? Help would be great. Im trying to get prepared for when i recive the amps. By the way, for the moment i will use the sundown audio amp at a 2ohm load. The power wire im using is made by kicker and is known as 4AWG flex rated to handle 1000 watts RMS. Feedback would be great. THNX

If you have any links on where i can get a good deal on fuses. Let me know //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif THNX again

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[Johnny Law.Lulz 5,000+ posts]

IF both amps have built in fuses then you dont need to use fuses.

 

[ExplicitUrSelf 10+ year member]

So since the cadence amp has the 30A fuse, thats considered a built in fuse?? Im not sure if the sundown SAZ-1000.1D has fuses so i guess i have to wait on that... So that being said should i remove my fuse holder that is near my battery?? And my distributor block?? Can anyone vouch for what this guy stated above. Im not to good with this car audio stuff. Sorry...

 

[bugflipper 10+ year member]

Not running a fuse would be very ill advised. A small abrasion in the wire could ultimately burn your vehicle up. You should be safe with a 140 at the battery. The sundown should be 25Ax3. For the dist block a 75 to the sundown and 30 for the Cadence. Technically you could go 105 on the power wire. I would go the 140 to allow for resistance in wire and heat from the engine. Very rarely fuses can fail. Why take the chance if you already have the equipment to use them?

 

[Johnny Law.Lulz 5,000+ posts]

Not running a fuse would be very ill advised. A small abrasion in the wire could ultimately burn your vehicle up. You should be safe with a 140 at the battery. The sundown should be 25Ax3. For the dist block a 75 to the sundown and 30 for the Cadence. Technically you could go 105 on the power wire. I would go the 140 to allow for resistance in wire and heat from the engine. Very rarely fuses can fail. Why take the chance if you already have the equipment to use them?

What are fuses on the power wire going to do that the fuses built into the amps dont already do ? If you fuse higher than the fuse rating of the combined amps then there is no point in fusing at all because the amp fuses will blow first and if you fuse lower then the amps might not run to full potential. Obviously running a complete system without fuses is stupid but his system already has fuses.

 

[justafifteen 10+ year member]

What are fuses on the power wire going to do that the fuses built into the amps dont already do ? If you fuse higher than the fuse rating of the combined amps then there is no point in fusing at all because the amp fuses will blow first and if you fuse lower then the amps might not run to full potential. Obviously running a complete system without fuses is stupid but his system already has fuses.

Aren't fuses in the power wire so that if some part of the power wire touches metal, something doesn't catch on fire/fry? It'll just pop the fuse and that's that. The only "hot" part of the wire after the fuse blowing would be from the battery to the fuse holder which should only be

 

[RAM_Designs 5,000+ posts]

Aren't fuses in the power wire so that if some part of the power wire touches metal, something doesn't catch on fire/fry? It'll just pop the fuse and that's that. The only "hot" part of the wire after the fuse blowing would be from the battery to the fuse holder which should only be
Yes.

 

[bugflipper 10+ year member]

What are fuses on the power wire going to do that the fuses built into the amps dont already do ? If you fuse higher than the fuse rating of the combined amps then there is no point in fusing at all because the amp fuses will blow first and if you fuse lower then the amps might not run to full potential. Obviously running a complete system without fuses is stupid but his system already has fuses.

As a wire ages it corrodes which raises impedence. Electricity flowing through wire with resistence creates heat. Heat blows fuses. That is why sometimes one has to go up in fuse size. The reason to fuse the wires is to prevent fire. The amplifier under normal situations will not arc to create a fire. If the wire feeding it gets pierced or vibrates loose it will definately arc if contact with a grounded metal source is made.Fusing is to keep the wire from arcing and starting a fire. From a dist block to amp should be a very short distance. The shorter the wire the less resistance. No need in putting large amp fuses there.

It is the same concept as your house. The breaker isn't there to make the toaster work. It would do fine for years with it's internal fuse. The breaker is for whendamage occurs to the wire feeding the toaster to hopefully keep the house from burning down. Of coarse just as a breaker can fail, a fuse can fail. It is a preventive measure, not an absolute.

 

[patotay 10+ year member]

if the fuse is bigger,it wont stop anything..

for daily,i put fuse just to be sure..

 

[ExplicitUrSelf 10+ year member]

would i be safe throwing a 100a fuse near the battery and 2 80a fuses btw i have 4 awg from the dist block to my two amps.the reason i want to use the 80a fuse for the candace is becuz i have a fuse laying around

 

[patotay 10+ year member]

if the 4 ga has already been fused,you dont need to fuse it again..