Is Circuit Breaker Needed When Wiring Deka Battery Isolator # DW08771
Question:
Can I use 70A isolator and 40A circuit breaker for Dodge Ram van with 127A alternator to charge 2nd battery? or I shoud get 120A isolator and higher Amp circuit breaker like 80A? Thanks.
asked by: Toddy
Expert Reply:
When wiring up the Deka Battery Isolator # DW08771 the main/first battery will connect directly to position one on the isolator without the need for a circuit breaker. The second battery though should be attached to the second position on the isolator via a circuit breaker that is rated appropriately for the battery. The alternator will go to the A post on the isolator.
I have attached a diagram that you might find helpful as well.
You should not have to worry about the second battery being overcharged. The alternator simply won't be strong enough to provide enough charge for this to be an issue.
Toddy
8/30/2018
Can I use 70A isolator and 40A circuit breaker for Dodge Ram van with 127A alternator to charge 2nd battery? or I shoud get 120A isolator and higher Amp circuit breaker like 80A? Thanks.
Products Referenced in This Question
Redarc Smart Start Battery Isolator - Dual Sensing - 12 Volt - 200 Amp
- Battery Charger
- Battery Isolators
- 12V
- Vehicle Battery to Auxiliary Battery
- Redarc
more information >
Product Page this Question was Asked From
Deka Battery Isolator - 120 Amp
- Battery Charger
- Battery Isolators
- 6V
- 12V
- 24V
- 36V
- 48V
- 50V
- Vehicle Battery to Auxiliary Battery
- Deka
more information >
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Jose L.
5/22/2020
I have an RV that has a main battery to start and two auxiliaries the auxiliaries are deep cycle marine which isolator should I use? and I would like to send me the connection diagram