Massive voltage drop even with 310A alternator!!

[gamehawk55 10+ year member]

Just change the **** fuses and get back to us

Theres only the one fuse under the hood and I dont have another and I dont think anywhere in town here even carries a 300A ANL fuse. And my cable run isn't long enough to eliminate the fuse altogether

 

[Bigmann6374 10+ year member]

But I've already got 5250 count 0 gauge going from front to back....surely 1500W shouldn't show drops like that through that kind of cable?

I'm willing to bet like everyone else it's 1: a loose ring terminal, 2: a bad fuse, or 3: a bad ground; maybe paint wasn't stripped before grounding, not tight enough. Check all these things and get back

 

[gamehawk55 10+ year member]

I'm willing to bet like everyone else it's 1: a loose ring terminal, 2: a bad fuse, or 3: a bad ground; maybe paint wasn't stripped before grounding, not tight enough. Check all these things and get back

If paint wasn't stripped before grounding then I would end up seeing a ton of resistance in my ground wouldn't I? And I've already stated all my grounds read 0.3-0.4ohms

 

[winkychevelle 10+ year member]

Theres only the one fuse under the hood and I dont have another and I dont think anywhere in town here even carries a 300A ANL fuse. And my cable run isn't long enough to eliminate the fuse altogether

Idc if you have to drive 100miles either replace and get back to us or stop complaining. And bestbuy usually has 300 amp fuses if you ask or at least 250amp or 200amp since you shouldnt be drawing more that 200amps for 1500w

 

[Bigmann6374 10+ year member]

No not necessarily, if you didnt strip the paint you need to.

 

[Slo_Ride 5,000+ posts]

i think you neeed to figure it out for yourself and just let us know what it was. you're obviously not going to listen to anyone here.

 

[gamehawk55 10+ year member]

i think you neeed to figure it out for yourself and just let us know what it was. you're obviously not going to listen to anyone here.

I've done pretty much everything anybody here has suggested already. I just changed the fuse from a 250A to a 300A not 2 months ago. Voltage issues have been the same. I just re-did some ring terminals not 2 weeks ago and nothing is loose. And all my grounds read within an acceptable resistance range. So...Short of throwing more money at this to change out the whole run, which I really don't want to have to do right now. What else could cause this?

 

[Side Show 10+ year member]

What batts are you running and how many of them? have you tested these? also check terminals are tight and earths are all good

 

[Slo_Ride 5,000+ posts]

good luck, i hope you figure out the problem. please let us know what it was.

 

[gamehawk55 10+ year member]

What batts are you running and how many of them? have you tested these? also check terminals are tight and earths are all good

I've already stated that I'm running my stock battery and have tried a brand new one and it made no difference and just got finished saying all my terminals and grounds are GOOD.

 

[Side Show 10+ year member]

you need more than one standard battery.

problem solved

get a dry cell batt in the rear

 

[gamehawk55 10+ year member]

you need more than one standard battery.
problem solved

get a dry cell batt in the rear

This is not a matter of having too few batteries. There are plenty of people that run more power than me on even STOCK electrical and don't have the problem I'm having. With a 310A alternator, BIG 3 and 0 gauge all around the voltage needle should barely even flinch at 1500W.

 

[Side Show 10+ year member]

2500wrms amp on a stock battery.....

 

[Side Show 10+ year member]

thort big three had battery upgrade in it... whats the cca rating on your batt your running?

 

[gamehawk55 10+ year member]

2500wrms amp on a stock battery.....

Yeah.....which is tuned to put out 1500W....If you actually READ something instead of just skimming over stuff you would know this already.