Doing It Right

[Markous]

I have a pretty moddest system compared to most here but that doesn't mean i don't want it to maximize it's potential.

I m going to have a 550w rms Alpine pushing a Sundown SA-8.

This is what my power system will look like when the dust settles

pardon the drawn by a 2 year old look LOL

Gonna do the big three in 0 ga and wire the XP750 from the primary in 4 ga.

I want to keep the cap cause it has a voltage meter on it and it shouldn't impede (stereo pun LOL) anything.

Everything looks good right?

[__d_a_v_i_d__]

Looks legit !!!

Though if the front battery is a toxic lead battery it can harm itself, and/or the agm batteries. It's not good to mix chemistries(agm,Gell, wet, li ion, etc) it's okay to mix brands as long as all are agm

[SnowDrifter]

Looks fine to me. As a matter of personal preference: I've always made my front-back runs directly from the alt

[Markous]

Looks legit !!!

Though if the front battery is a toxic lead battery it can harm itself, and/or the agm batteries. It's not good to mix chemistries(agm,Gell, wet, li ion, etc) it's okay to mix brands as long as all are agm

Ok, that sounds like a good idea. Thank you for the recomendation.

Looks fine to me. As a matter of personal preference: I've always made my front-back runs directly from the alt

I really like this idea! gonna have to throw that in the idea pool, thank you.

Is it nessessary to have an isolator between the batteries for my application?

[SnowDrifter]

Unless you play with the car off to the point that your batteries are dead, you have no need for an isolator. It's just another expense and a part to fail.

Just make sure you fuse as close as you can to BOTH batteries

[Markous]

I was not sure where to put the fuse on the big 3 thank you, i was just going to put it in the middle between alt. and battery.

Hoping the other fuse holder i have for the 2nd battery will mount on the outside of the case i got for the battery (512)

[Markous]

More questions . . . . this round, fuses and where and how many.

back to the high quality CAD drawing of mine.

The yellow boxes are where i plan to install fuses, i would like to avoid the green one i have indicated.

Questions

1. The Big 3/0 kit i bought comes with a 250a fuse, is that to much for a 170a alternator?

2. What amp rating should i have,

a ) coming out from the primary to the secondary?

b ) going into the secondary from the primary?

The amp is fused for 60 itself so the final inline before the amp (after the cap) will be the same if i even need that one, again i need advice on this one.

[98GCLimited]

That is more than beefy enough electrical for what you have planned.

[Markous]

Beefy was the intent, but is it overkill? i don't want that, just enough to operate safely.

Edit - In regards to fusing i mean.

[Markous]

The 4 guage kit (Wirez) i picked up for this comes with a 100A fuse, should i just fuse it at the same (100A) at the other end tieing into the secondary?

I might be installing the amp in a tight spot, heat might be an issue it has temp protection and is fused for 60A would i be wrong in fusing after the cap with a lesser amperage or is 60A fine??