3500 watt electrical

[On3Hundr3dProof 19]

So in my next build I'm going to be running around 3500 watts probably a bc3500. For my current electrical setup i have a dc 270xp alt the big 3 and a d5100r in the front. Voltage @ idle is 15.2v. If i run 2 runs of ofc 0ga to a deka 9a31 in the back then one 2ft run of 0ga from the batt to amp is it going to be enough to to keep me above 13v for the most part or will i need a second 9a31 in the back. I plan on getting a second one later on anyway but would it be necessary? Thanks.

[ricksi30 923]

Why is your idle voltage so high?

[On3Hundr3dProof 19]

Voltage at idle is usually between 15-15.4 Its the alt.

Edited November 26, 2012 by On3Hundr3dProof

[ricksi30 923]

Voltage at idle is usually between 15-15.3. Its the alt.

Do you have a regulator? I'm not an expert at high power electrical systems but I am pretty sure that the XS power batteries (and other 12v batteries) don't like being charged that high. I could be wrong and hopefully someone with more experience can chime in.

[On3Hundr3dProof 19]

At idle

[Shogen 325]

At idle

Is that cold? Or after you've been running for a while???

[On3Hundr3dProof 19]

Thats cold. Ive had the alt in about 2 weeks. Itll go to 15.0 if its warm and its sitting idle for a few min.It takes a while to get my truck warm up here though this time of year. I havent had any problems so far though.

[Shogen 325]

Thats cold. Ive had the alt in about 2 weeks. Itll go to 15.0 if its warm and its sitting idle for a few min.It takes a while to get my truck warm up here though this time of year. I havent had any problems so far though.

Thats cold. Ive had the alt in about 2 weeks. Itll go to 15.0 if its warm and its sitting idle for a few min.It takes a while to get my truck warm up here though this time of year. I havent had any problems so far though.

After driving around for say 15min and then idling... where does the voltage go?

[Quentin Jarrell 671]

Those gauges must be adjusted. However newer gm and dodges idle that high. Higher voltage, more spark, less fuel needed, better fuel economy.

[swift 501]

To answer your question, that should be fine for 3500 watts given you dont plan on demoing full tilt for long intervals at idle. A second down the road will not be a bad idea though.

[On3Hundr3dProof 19]

after idling it usually is around 15.0-15.2