SAE Connector Solar Panel

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   Okay I want to make sure I understand the reverse polarity for the solar panel.
I purchased a Zamp solar waterproof port (see pic below).  My solar panel is a Zamp solar brand too.  If I connect the waterproof port (POS on the battery (red wire) and NEG to the battery (black wire), should I be good to go?  I read about this reverse polarity, but my wire that I will connect to the battery is only two wires, red and black.  TIA

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Wengerda Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02 Jul 2021 Location: Alexandria VA Online Status: Offline Posts: 8	Topic: SAE Connector Solar Panel Posted: 13 Jul 2021 at 9:07am
	Okay I want to make sure I understand the reverse polarity for the solar panel. I purchased a Zamp solar waterproof port (see pic below). My solar panel is a Zamp solar brand too. If I connect the waterproof port (POS on the battery (red wire) and NEG to the battery (black wire), should I be good to go? I read about this reverse polarity, but my wire that I will connect to the battery is only two wires, red and black. TIA

offgrid Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 23 Jul 2018 Online Status: Offline Posts: 5290	Posted: 13 Jul 2021 at 10:46am
	Do you have a multimeter? If not you should get one for your travelling toolbox. What you plan to do should have the correct polarity but it's always good to verify with a meter before connecting. You should also place an inline fuse in the leg between the battery pos terminal and the connector, as close to the battery as possible. The fuse should be sized to protect the wire: 15 amp for 14 gauge 20 amp for 12 gauge 30 amp for 10 gauge.
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Wengerda Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02 Jul 2021 Location: Alexandria VA Online Status: Offline Posts: 8	Posted: 13 Jul 2021 at 10:54am
	The solar panel does have an inline fuse. Thank you.

offgrid Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 23 Jul 2018 Online Status: Offline Posts: 5290	Posted: 13 Jul 2021 at 12:37pm
	If the fuse is not at the battery end of the cable it's useless. If you get a short that is where the high current will come from. Solar modules don't create high currents when the get shorted, so they won't blow the fuse. If you short the battery though you will melt the insulation off and potentially have an electrical fire, so the fuse needs to be at that end.
	1994 Chinook Concourse 1995 RV6A Experimental Aircraft 2015 Rpod 179 - sold

Wengerda Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02 Jul 2021 Location: Alexandria VA Online Status: Offline Posts: 8	Posted: 13 Jul 2021 at 1:28pm
	understood, which wire I add the inline fuse near the battery (POS or NEG)

TheBum Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 26 Feb 2016 Location: Texas Online Status: Offline Posts: 1407	Posted: 13 Jul 2021 at 1:45pm
	Positive
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Wengerda Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02 Jul 2021 Location: Alexandria VA Online Status: Offline Posts: 8	Posted: 13 Jul 2021 at 1:46pm
	Thanks