Second Battery

[seedubs1 10+ year member]

That still doesn't answer the question. If they both have the same flow of current (as one person said here), what makes the neg different than the pos. This makes me think they don't carry the same current. A google search is getting nothing for me.

Orientation of electron flow.....

 

[seedubs1 10+ year member]

Yup. Touch the + wire to a ground, and you have yourself a nice short circuit to discharge your battery real quick.....And it will spark and do all sorts of bad shit.

Touch your - wire to ground, and you still have the same **** circuit you had before. No short circuit.

 

[seedubs1 10+ year member]

my pos touched the neg post in my rear battery and welded itself before the fuse popped. i was all like "wtfhspisurhmnmhuh??"

I accidentally touched my + run from my battery to my - input of my old amp.....Kinda lit it on fire a little.....

Those + wires are little bastards.

 

[Lakota 5,000+ posts]

When a battery discharges current flows out of the positive terminal and then completes the loop. Charge flows into the positive end if the battery is charging. So, if the battery is supplying current to a amp the current will first enter the positive terminal of the amp, thus being the reason for putting a fuse there. If that fuse is popped, the circuit is open and current cannot flow.

 

[jbizzle 5,000+ posts]

This went from me asking a few questions, to a lecture on the difference between positive and negative wires.

 

[jbizzle 5,000+ posts]

indeed. did you learn anything?

Hahah, to be honest I did actually.

 

[SethPhillips 5,000+ posts]

I'm pretty sure he was asking because there is current flowing through that wire.....And if there ended up being too much curent passing through the wire, it could melt the jacket and destroy the wire. Especially in a long neg. run like from the trunk to the underhood batt. Not really a stupid question if you ask me.
The answer is because if there is too much current, the + fuses will stop teh flow of current, and because of this, the flow of current in the - run will be stopped. Because of this, as long as you fuse your + run, there is no need to have a fuse to protect your - run, since it is already protected by the + run fuse.

Maybe contribute information to a thread instead of just insinuating that people are stupid and it should be done the way you say because you are einstein

//content.invisioncic.com/y282845/emoticons/handclap.gif.0c301076f534e244f0460706894f19e0.gif

btw, if this hasn't been beat to death on this forum (which it has) i'd be more inclined to read everything and give my thoughts.
if you can find it easily by searching, i'm more inclined to say something retarded. sorry man, didn't realize today was sandy vag day

hahha!!!

If the neg is running the same current as the pos why doesn't the neg spark if you touch it against metal (a ground) like the pos does. What about the current changes?

do you speak a da english.. it's ground! this explains it ...

When a battery discharges current flows out of the positive terminal and then completes the loop. Charge flows into the positive end if the battery is charging. So, if the battery is supplying current to a amp the current will first enter the positive terminal of the amp, thus being the reason for putting a fuse there. If that fuse is popped, the circuit is open and current cannot flow.

yes!

current flows out the neg, in threw the +...

not out the + into the -.

 

[seedubs1 10+ year member]

There's actually some decent information in here for someone wanting to wire up a second battery if they don't really know what they're doing.

I give this thread an A+//content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

 

[jbizzle 5,000+ posts]

now people, answer some of my questions since its my thread!

would (2) 250amp fuses be enough for the + run to the back? and from back batt to the amp, should I put a 250amp fuse or a 200, amp has a total of 4 fuses that are 40 each, 160 total..

 

[SethPhillips 5,000+ posts]

do you know why though?

shiiiit, put me on the spot.. i do know, i should know.. but dont at this moment brain fart. let me grab my DC circuitry book.

has to do with the electron's, and the magic that happens inside a batt.

 

[seedubs1 10+ year member]

now people, answer some of my questions since its my thread!
would (2) 250amp fuses be enough for the + run to the back? and from back batt to the amp, should I put a 250amp fuse or a 200, amp has a total of 4 fuses that are 40 each, 160 total..

Well.....If the amp blows fuses at 160 amps.....You're not going to be pulling more than 200A, so go with the 200's. Or the 250's. It doesn't really matter. The amp is protected because of it's onboard fuses, and 1/0 can handle more than 200 or 250A of current. So you're fine any way you look at it.

 

[SethPhillips 5,000+ posts]

ahh yes... you win:crap:

 

[mokedaddy 5,000+ posts]

If the neg is running the same current as the pos why doesn't the neg spark if you touch it against metal (a ground) like the pos does. What about the current changes?

Go disconnect your negative terminal in the dark. Than hook it back up. It will spark.

 

[jbizzle 5,000+ posts]

i'll just use 250a fuses on all of them, they're all the same price from where I get them

 

[jrwalte 10+ year member]

Go disconnect your negative terminal in the dark. Than hook it back up. It will spark.

That's nothing like the spark you'll get if you touch positive to negative. That's what we're talking about. That's like a static spark in comparison //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif