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Old 09-04-2019, 01:12 AM
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dnadrifter dnadrifter is offline
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Adding 12V receptacles - does it matter where power comes from?

I am going to add a 12V receptacle to the back of the boat for the pump for tubes and a 12V usb to the driver side helm to power my iPhone.

Does it matter a ton where I pull power from. Do I need to go directly to the positive and negative bus bars in behind the helm, or can I just pull power and ground from an existing 12V receptacle and daisy chain?
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Old 09-04-2019, 06:27 AM
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My personal preference would be to daisy chain off the existing 12 volt outlet. This is already a circuit breaker protected circuit and sized for the type of loads the outlet will see. Just make sure you use the proper size wire for your new run.

If you do decide to go back to the buss bars make use you're either fusing the circuit or running the new circuit from a currently unused circuit breaker in the dash.
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Old 09-04-2019, 07:58 AM
MLA MLA is offline
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A) I would avoid connecting direct to a battery source. Id want to be on the boat side of the main battery switch. B) you want to connect to a source, for both B+ and B-, that can handle the additional potential load.
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Old 09-04-2019, 05:45 PM
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dnadrifter dnadrifter is offline
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Quote:
Originally Posted by MLA View Post
A) I would avoid connecting direct to a battery source. Id want to be on the boat side of the main battery switch. B) you want to connect to a source, for both B+ and B-, that can handle the additional potential load.
Isn't the bus bar on the boat side of the battery switch?

Thanks for the comment on load...hadn't considered that. Although there is the possibility I guess, I shouldn't be connecting more "things", just the same things I do now in different places.
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Old 09-04-2019, 06:30 PM
MLA MLA is offline
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Quote:
Isn't the bus bar on the boat side of the battery switch?
Typically, yes, for B+ and a volt meter will confirm.
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