Hey guys i'd like to add another alternator as i have a spare one sitting around.
i want to connect it in parallel to my original alt i have two batteries that are the same that are also connected in parallel
the need for all this power is for my comp truck running 40amp thermo fans, 8 spot lights, winch, compressor etc so the amps add up
so is it as easy as using the same wires for excitor and bat but run a new cable for the output?
Notice: We request that you don't just set up a new account at this time if you are a previous user.
If you used to be one of our moderators, please feel free to reach out to Chris via the facebook Outerlimits4x4 group and he will get you set back up with access should he need you.
If you used to be one of our moderators, please feel free to reach out to Chris via the facebook Outerlimits4x4 group and he will get you set back up with access should he need you.
Recovery:If you cannot access your old email address and don't remember your password, please click here to log a change of email address so you can do a password reset.
2nd alt Q's
Moderator: -Scott-
2nd alt Q's
MUD BEERS & MAYHEM 4x4 & SOCIAL Group
[url=http://www.fourbys.com.au/]Fourby's tyre and mechanical[/url]
[url=http://www.4wdmonthly.com.au/forum/showthread.php?t=24441/]My build up for ttc[/url]
[url=http://www.fourbys.com.au/]Fourby's tyre and mechanical[/url]
[url=http://www.4wdmonthly.com.au/forum/showthread.php?t=24441/]My build up for ttc[/url]
I have heard of the two alt and 2 batt systems can give trouble if all the units aren't in exactly equal in output/voltage. ie if one alt is not putting out exactly the same as the other AND they are connected together one can somehow adversly effect the other.
I have no personal knowledge of this but have heard of it happening. Wouldn't it be better to split yr electrical system into 2 distinct seperate parts, so if you have a major failure you are only half down....
I have no personal knowledge of this but have heard of it happening. Wouldn't it be better to split yr electrical system into 2 distinct seperate parts, so if you have a major failure you are only half down....
Show me the money..SHOW ME THE MONEY
Bosch recomend that the two alternators be as similar ( well - identical is best ) as possible when doing this. However its not inherently risky.
The alternator ( well actually the regulator... ) with the lowest cut in voltage will start charging first then if the system voltage continues to drop then the second alternator will starts to assist. In reality its a regulator matching issue.
The reason for the "simialr" recomendation is to get the two cut in points as close as possible to provide good output voltage regulation chatacteristics under load, you don't want the sytem to have to drop its voltage too much to get the other alternator to start working.
There's a BOSCH techinal paper that covers this but it actually says pretty much what I've said.
The alternator ( well actually the regulator... ) with the lowest cut in voltage will start charging first then if the system voltage continues to drop then the second alternator will starts to assist. In reality its a regulator matching issue.
The reason for the "simialr" recomendation is to get the two cut in points as close as possible to provide good output voltage regulation chatacteristics under load, you don't want the sytem to have to drop its voltage too much to get the other alternator to start working.
There's a BOSCH techinal paper that covers this but it actually says pretty much what I've said.
( usual disclaimers )
It seemed like a much better idea when I started it than it does now.
It seemed like a much better idea when I started it than it does now.
Who is online
Users browsing this forum: No registered users and 0 guests