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Topic Review (Newest First)
11-24-2013 01:33 AM
gtr125
Re: 2 alts vs 1 big one

im back with more ?. has anyone used any off the northstar battries? ive notice that one im looking at (nsb40ft) say 38ah for 10hrs. so would that be 10*38=380 for 1hr or am i wrong. thanks for the help. sorry put wrong batter
09-23-2013 02:22 PM
gtr125
Quote:
Originally Posted by profundus-sanus View Post
yes that would be fine. the current will take the path of least resistance so if your running 500a through 1 cca and 1 ofc 1/0 the cca will be around 200a and the ofc would be carrying 300a. Thats just a estimate, but the figures would likely be close to that.
thats good thanks cuz i plan on getin skyhigh 2/0 cca for my big 3 and frm my batts 2 my amps. and then welding cable 2/0 frm front battery to battery bank
09-23-2013 02:02 PM
profundus-sanus
Re: 2 alts vs 1 big one

Quote:
Originally Posted by gtr125 View Post
does anyone know if it would be ok 2 mix cca 2/0 with ofc 2/0 thanks
yes that would be fine. the current will take the path of least resistance so if your running 500a through 1 cca and 1 ofc 1/0 the cca will be around 200a and the ofc would be carrying 300a. Thats just a estimate, but the figures would likely be close to that.
09-23-2013 01:51 PM
gtr125
Quote:
Originally Posted by gtr125 View Post
ok thats great ill prolb add a 2nd alt later
does anyone know if it would be ok 2 mix cca 2/0 with ofc 2/0 thanks
07-03-2013 03:43 PM
gtr125
Quote:
Originally Posted by profundus-sanus View Post
with 1 220a alt, yes.
ok thats great ill prolb add a 2nd alt later
07-03-2013 03:07 PM
profundus-sanus
Re: 2 alts vs 1 big one

with 1 220a alt, yes.
07-03-2013 03:01 PM
gtr125
Quote:
Originally Posted by profundus-sanus View Post
oh okay, didn't realize you were doin multiples in the back.

here's my general rule of thumb for wire requirements front to back runs based on 20 ft runs. amperage is the amount of alt power you have.

100a ofc 1/0 75a cca 1/0
125a ofc 2/0 100a cca 2/0
160a ofc 3/0
200a ofc 4/0

that's for 20ft runs. if you're shorter you can stretch it a bit. This is simply to keep voltage drop caused by wire at full load below .5v. If you push 1/0 ofc up to 350a some manufactures rate at you'll see a 1.25+v drop just from wire.
so 6 runs (3+ 3-) should do it if i use the cca
07-03-2013 07:03 AM
profundus-sanus
Re: 2 alts vs 1 big one

Quote:
Originally Posted by gtr125 View Post
rite now its still a toss up. the weldin cable or cca from kca cable idk. but i got see how much i need. tht is if it stops rainin. (i was thiinkin of 6 smalls xs n the back seein as they are not much more then the napa.)
oh okay, didn't realize you were doin multiples in the back.

here's my general rule of thumb for wire requirements front to back runs based on 20 ft runs. amperage is the amount of alt power you have.

100a ofc 1/0 75a cca 1/0
125a ofc 2/0 100a cca 2/0
160a ofc 3/0
200a ofc 4/0

that's for 20ft runs. if you're shorter you can stretch it a bit. This is simply to keep voltage drop caused by wire at full load below .5v. If you push 1/0 ofc up to 350a some manufactures rate at you'll see a 1.25+v drop just from wire.
07-03-2013 06:19 AM
gtr125
Quote:
Originally Posted by profundus-sanus View Post
xs power is worth it imo.

however i'd put the smaller batt under the hood and the bigger batt in the rear.

what did you decide on for wire?
rite now its still a toss up. the weldin cable or cca from kca cable idk. but i got see how much i need. tht is if it stops rainin. (i was thiinkin of 6 smalls xs n the back seein as they are not much more then the napa.)
07-03-2013 05:35 AM
profundus-sanus
Re: 2 alts vs 1 big one

xs power is worth it imo.

however i'd put the smaller batt under the hood and the bigger batt in the rear.

what did you decide on for wire?
07-03-2013 03:27 AM
gtr125
Quote:
Originally Posted by Beckerson1 View Post
Same size wire all the way around
i got more ?. im looking at 3 diff kinds of battery.
1 the xspower d680
2 the Kinetik HC600
3 the napa commercial battery bat7236 is a 1140 ca 89.75 & batt7238 is 910 ca 82.95
im thinking of getting 6 of each. my amps will be hifi zrx3000 or the massvie n4. my alts are 220ah (125 at 800rmps). which of these battery would be the best to get. if i get the xs or kc ill put a bigger one under the hood xs3400 or kc2400. thanks
06-28-2013 11:35 AM
Beckerson1
Re: 2 alts vs 1 big one

Quote:
Originally Posted by gtr125 View Post
cool cool should i do the alt to battety with the same wire or just1/0 or 4/0?
Same size wire all the way around
06-28-2013 05:43 AM
gtr125
Quote:
Originally Posted by Squeezumz View Post
At 25ft it'd be more that 500amp each but it never hurts to have more. The alts aren't always putting out their max too
cool cool should i do the alt to battety with the same wire or just1/0 or 4/0?
06-28-2013 03:04 AM
Squeezumz
Re: 2 alts vs 1 big one

Quote:
Originally Posted by Squeezumz View Post
...500 amps at 50ft...
Quote:
Originally Posted by gtr125 View Post
so [email protected] volts drop

At 25ft it'd be more that 500amp each but it never hurts to have more. The alts aren't always putting out their max too
06-28-2013 02:10 AM
gtr125
Quote:
Originally Posted by Squeezumz View Post
Yeah but its not tinned. It is rated for like 500 amps at 50ft so thats a plus
tht sounds lik a win. so [email protected] should be good with the dual alts. it should be no volts drop
06-28-2013 12:40 AM
Squeezumz
Re: 2 alts vs 1 big one

Yeah but its not tinned. It is rated for like 500 amps at 50ft so thats a plus
06-27-2013 10:11 PM
gtr125
Quote:
Originally Posted by Squeezumz View Post
And what does 3 1/0 gauge look like? I'd just think running 1 is easier than 3. And I guess in your case 2 vs 6.
true an thts pure copper rite?
06-27-2013 09:01 PM
Squeezumz
Re: 2 alts vs 1 big one

And what does 3 1/0 gauge look like? I'd just think running 1 is easier than 3. And I guess in your case 2 vs 6.
06-27-2013 05:43 PM
gtr125
Quote:
Originally Posted by Squeezumz View Post
Be cheaper too with that many less fuses and lugs. big bad welding wire
ummm ive seen that wire pretty big it look like the wire goin 2 my house
06-27-2013 02:22 PM
Squeezumz
Re: 2 alts vs 1 big one

Be cheaper too with that many less fuses and lugs. big bad welding wire
06-27-2013 01:36 PM
Beckerson1
Re: 2 alts vs 1 big one

Quote:
Originally Posted by gtr125 View Post
thts mean sh*t i think im going with 2alt an 6run of 1\0
How about 2 3/0
06-27-2013 11:08 AM
KingPen
Re: 2 alts vs 1 big one

lol....
06-27-2013 01:08 AM
gtr125
Quote:
Originally Posted by profundus-sanus View Post
of course 2 alts would be better than one.

i have no clue if you can fit a 2nd alt or not, that's up to whoever is fabbing the bracket for it.

6-phase alts have KILLER idle output, its not the high rpm monster conventional alts people are used too.

normal 270a 6-phase alts will do 220A+ at idle. in the vid below the alt is still doing 100a+ at 250 rpm.

+ YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.
thts mean sh*t i think im going with 2alt an 6run of 1\0
06-26-2013 08:23 PM
profundus-sanus
Re: 2 alts vs 1 big one

Quote:
Originally Posted by gtr125 View Post
would not 2alt do better the one? but idk if i can fit 2alts my one alt sit rite on top of the motor an it has its on belt.
of course 2 alts would be better than one.

i have no clue if you can fit a 2nd alt or not, that's up to whoever is fabbing the bracket for it.

6-phase alts have KILLER idle output, its not the high rpm monster conventional alts people are used too.

normal 270a 6-phase alts will do 220A+ at idle. in the vid below the alt is still doing 100a+ at 250 rpm.

+ YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.
06-26-2013 06:57 PM
gtr125
Quote:
Originally Posted by Slobalt7 View Post
I would think dual alts would give more amps at idle, most high amp alts are like built Supras, nothing at idol but a sh*t ton well above.
that what i was thinkin them dual alt wud give me about 250 ah at idle. and the alts come with ground stud on the case. cud i run one alt to the back bank +&- an one up front. or should i keep it up front
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