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Old 04-18-2016, 07:03 PM   #1
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Bussmann Hi-Amp Circuit Breaker - Which wire where?

Hi everyone,

I have a 2016 sunseeker which has a 150 amp circuit breaker located under the engine hood on the passenger side. On the breaker there are two connections; one labelled BAT the other AUX.

When I removed the battery in the engine compartment for the winter I didn't make a note of which of the 2 positive cables were connected to BAT and AUX.

There is a small positive cable that originates from the engine battery, and another long positive cable that seems to run towards the back of the motorhome.

My question is: Which wire goes goes to BAT, which goes to AUX?

Thank you in advance.
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Old 04-19-2016, 09:20 PM   #2
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Bussmann Hi-Amp Circuit Breaker - Which wire where?

If someone can post a picture showing the engine battery and circuit breaker with the cable connections that would help as well.
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Old 04-19-2016, 09:20 PM   #3
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Wire from the battery goes to the terminal labeled batt.
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Old 04-19-2016, 09:23 PM   #4
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Bussmann Hi-Amp Circuit Breaker - Which wire where?

Thanks opie. Where does the aux wire connect to out of curiosity?

I read somewhere it connects to the "Battery Control Centre" which leads up to the coach batteries. Is this correct?

So BAT to engine battery and AUX to the "Battery Control Centre"?
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Old 04-19-2016, 10:04 PM   #5
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Through process of elimination, yes.

But I am not familiar with your set-up. If you have 2 free wires and one of them comes from the batt, then elimination says the other free one goes to the open post on the breaker after connecting the batt to the batt post.

Its probably labeled "AUX" because the breaker manufacturer doesn't know what the end user is going to use it for other than to open and close a circuit.
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Old 04-19-2016, 10:48 PM   #6
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Here's a picture of mine if that's any help. The bottom line goes to the battery, the top line travels deep back into the engine compartment.Click image for larger version

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Steve
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Old 04-19-2016, 10:56 PM   #7
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Thanks Steve. Appreciate the picture.
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Old 04-20-2016, 01:59 PM   #8
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Batt goes to the source or battery; aux is the load. It is important.
WW
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Old 04-20-2016, 02:54 PM   #9
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Bussmann Hi-Amp Circuit Breaker - Which wire where?

Thanks WolfWhistle. Where does the aux cable run to specifically? Is it the battery control centre for the coach batteries?
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Old 04-20-2016, 04:00 PM   #10
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Do you have an emergency start feature?
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