Switching dual alternators - 2012

 AT the suggestion of Stanley at the east coast dealer we contacted Dale at Balmar on the alternator questions. Here is his suggestion.
July 2012
“I do not see a reason that you cannot connect both alternators to the same battery bank then use our DDC 12/24 Digital Duo Charge to charge the start battery. However I would suggest that you contact the Alternator Manufacture to see if they have a problem with paralleling the alternators and removing the internal regulator. I assume Stanley can answer some of those questions."
We then re-contacted Stanley he has directed us to purchase the brush boxes to bypass the controllers in the alternators, which also kills our warranty on the alternators. Oh well.
His response:
"Beta Marine can supply a brush box for these alternators which eliminates the regulator. There is a small charge for these. Contact you dealer and he can supply them to you. The Beta part number for the brush box for the 100 amp alternator is 200-02684. This is an Iskra part for the Iskra alternator. As long as the wiring is good, there should be no problem with paralleling the alternators.
Please remember that this is basically modifying the alternators and thus you will now assume the warranty on them."
So our net step are the brush boxes.
Options from

Beta Marine West Centerfielder regulator – not caring about expenses and hiring an electrician to help also.
Will also need a ACR to charge engine start battery from house bank. Diode battery isolator – two bank
 



NewMar Battery Isolators & Integrators -  Old school but may be a good way to go.


Another choice is to manage the system our selves but this is yet another task to do, and a lot. Use a selector switch and split house bank in two making two house banks.



Also we may want a NewMar Battery Integrator probably any way we decide to proceed.
The NewMar Battery Isolators & Integrator will not work with a Self-Exciting Alternator. Ours are Self-Exciting. Dam
So now we are looking at the Promariner Battery Isolator but does not work with a Self-Exciting alternator either. Looks like this is the end of the road for these.

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