Bigger wiring=Less voltage drop?

[badarsebikerst 10+ year member]

^^

Okay so I have a 80amp alternator and right now I have 5 gauge wiring for my 1500w amp and big 3 is done in 4 (just what I could get at the time) and on continuous full tilt it would drop to 12.5 but everything off and it holds steady at 14.2

If I were to upgrade my wiring to 1/0 gauge then would I see less of a voltage drop?

Just asking because I have 50ft of 1/0 coming in tomorrow //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

Click to read more...

 

[matt_bennett05 10+ year member]

It should help somewhat but I think you will still see a LOT of voltage drop unless you add batts or upgrade your alternator.

 

[miker 5,000+ posts]

^^Okay so I have a 80amp alternator and right now I have 5 gauge wiring for my 1500w amp and big 3 is done in 4 (just what I could get at the time) and on continuous full tilt it would drop to 12.5 but everything off and it holds steady at 14.2

If I were to upgrade my wiring to 1/0 gauge then would I see less of a voltage drop?

Just asking because I have 50ft of 1/0 coming in tomorrow //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

You need bigger wire either way.. Thinking of it from the sense of 5g wire (maybe smaller idk what brand it is) won't let enough current through to run an amp at 12v and 1500w.

Also you alternator is too small.. that is again, if you have a full 1500w. What kind of amp do you have?

 

[Phoenix Risen 10+ year member]

what "1500 watt" amp are you running

 

[MONSONwarrior Premium Member]

^^Okay so I have a 80amp alternator and right now I have 5 gauge wiring for my 1500w amp and big 3 is done in 4 (just what I could get at the time) and on continuous full tilt it would drop to 12.5 but everything off and it holds steady at 14.2

If I were to upgrade my wiring to 1/0 gauge then would I see less of a voltage drop?

Just asking because I have 50ft of 1/0 coming in tomorrow //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

If you don't use it, you'll lose it //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[badarsebikerst 10+ year member]

You need bigger wire either way.. Thinking of it from the sense of 5g wire (maybe smaller idk what brand it is) won't let enough current through to run an amp at 12v and 1500w.
Also you alternator is too small.. that is again, if you have a full 1500w. What kind of amp do you have?

what "1500 watt" amp are you running

Mtx 1501d rated 750@4ohm 1500@2ohms

I modded it and it's currently wired @1ohm so actually around 2000.

 

[Phoenix Risen 10+ year member]

do the 1/0 power wire and the big 3

but with that your going to need a good battery to run by the amp, look up dbeez on here and see about getting one of his deka 9a31s beast batts and he has a killer price.

 

[miker 5,000+ posts]

Mtx 1501d rated 750@4ohm 1500@2ohms I modded it and it's currently wired @1ohm so actually around 2000.

Okay, so 2000w, lets say 90% efficient.. 2000/ 13.8 = 145 * 1.1 = 160amps.. Double your alternator.. Plus w/e your car needs ...

 

[Phoenix Risen 10+ year member]

that amp will never see 90% efficiency.

 

[badarsebikerst 10+ year member]

Okay, so 2000w, lets say 90% efficient.. 2000/ 13.8 = 145 * 1.1 = 160amps.. Double your alternator.. Plus w/e your car needs ...

I'll prolly get rid of power steering and mount another alternator in its place, or just rig up a custom job, kinda hard to find a 200amp+ alternator for a little 4cyl honda lmao.

Anyways thanks to everyone who contributed in this thread.

 

[Phoenix Risen 10+ year member]

check with excessive amperage, nathan makes a 250 amp alt for my little tib, he does a lot of stuff that other companies will not touch

 

[miker 5,000+ posts]

that amp will never see 90% efficiency.

Yeah, but it was just to make a point..

 

[Phoenix Risen 10+ year member]

Yeah, but it was just to make a point..

ok, i got in a argument the other day with someone about the efficiency of amps he was claiming that his jl 1k was 93%.

 

[badarsebikerst 10+ year member]

that amp will never see 90% efficiency.

Well in theory the amp's supposed to do 2250, that's logical reasoning if it goes from 750@4ohms to 1500@2ohms on 14v electrical and 500@4ohms and 1000@2ohms on 12v electrical lol

 

[Phoenix Risen 10+ year member]

were not talking about power out put

we are talking about how much of the amps that it draws to make that power