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rbp111

Citrus Heights, CA

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Posted: 01/14/18 06:49am Link  |  Quote  |  Print  |  Notify Moderator

I you connect a "regular" solar panel to a Zamp wire connector which has reverse polarity, what happens? Does the unit not work, or does it do any harm?

red31

Bryan

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Posted: 01/14/18 07:32am Link  |  Quote  |  Print  |  Notify Moderator

rbp111 , does the inline controller have any reverse hook up protection?

Almot

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Posted: 01/14/18 05:50pm Link  |  Quote  |  Print  |  Notify Moderator

rbp111 wrote:

I you connect a "regular" solar panel to a Zamp wire connector which has reverse polarity, what happens? Does the unit not work, or does it do any harm?

This is why people invented a multimeter. I don't want to find through experiment whether my controller will 100% protect itself from a user's (my) error, as supposed to, according to the manual. Always check the polarity and continuity before connecting new items, period.

Needless to remind that the controller should be connected to battery first, and then - to solar.

rbp111

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Posted: 01/15/18 06:08am Link  |  Quote  |  Print  |  Notify Moderator

Red,
I don't know. I saw the topic addressed on a you tube session and then I asked a salesman about it and he did not know that Zamp had switched polarities. I have seen some trailers come equipped with the Zamp connections. So I asked the question on the forum.

red31

Bryan

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Posted: 01/15/18 06:25am Link  |  Quote  |  Print  |  Notify Moderator

rbp111 , which pin do ya protect, the + or -, if ya protect the + from the battery and the + from solar ya get reversed polarity and things like battery tenders won't work without an adapter. If ya want to use some kind of connector ya need to make sure polarity is correct across the connector, easy enough to do.

rewire the zamp connector, rewire the panel, use adapters, replace the zamp and wire a different connector, there are options that are cheaper than a pricey zamp suitcase. Then add a new sticker that says Not for use with Zamp!

* This post was last edited 01/15/18 06:53am by red31 *   View edit history

Bobbo

Wherever I park

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Posted: 01/15/18 11:30am Link  |  Quote  |  Print  |  Notify Moderator

With all of this talk about "switched polarities," I thought I would throw in my $0.02.

When wiring this type of connector, you always wire the positive wire to the connector that is covered, and the ground to the connector that is exposed. When plugging in a portable solar panel, the SOLAR PANEL'S POSITIVE is wired to the covered connector. This follows the standard. Of course, from the battery's perspective, the wiring is reversed, but this is not a "battery" cable, it is a "solar" cable, so it is wired correctly.

That being said, I use that connector to power some small 12v stuff using a 20' long cable I made. I reversed the polarity on that cable so the 12v devices will see a "battery" connection.

But, in summation, the wiring is not reversed. It is solar wiring.


Bobbo, Linda and the furry kid (45 pound rescue)
2017 F-150 XLT 4x4 SuperCab w/Max Tow Package 3.5l EcoBoost V6
2017 Airstream Flying Cloud 23FB


red31

Bryan

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Posted: 01/15/18 11:49am Link  |  Quote  |  Print  |  Notify Moderator

[image]

vs

[image]

* This post was edited 01/15/18 12:12pm by red31 *

mike-s

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Posted: 01/15/18 12:00pm Link  |  Quote  |  Print  |  Notify Moderator

Bobbo wrote:

When wiring this type of connector, you always wire the positive wire to the connector that is covered, and the ground to the connector that is exposed.
Doing so would only result in a connection which wouldn't do anything useful/good, as any connection would have crossed polarity.

Bobbo wrote:

When plugging in a portable solar panel, the SOLAR PANEL'S POSITIVE is wired to the covered connector. This follows the standard.
Which only means the trailer side connector has its exposed contact connected straight to the battery +.

Tell us about "the standard" you refer to, and where it can be found.

Almot

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Posted: 01/15/18 12:02pm Link  |  Quote  |  Print  |  Notify Moderator

Bobbo wrote:

When plugging in a portable solar panel, the SOLAR PANEL'S POSITIVE is wired to the covered connector.

This is the practice, yes.

Let's not forget that when you buy a "portable" kit, the connector on the panel doesn't matter because it only goes as far as the controller (that is included in the kit). This controller will have it's own connector on the output that you plug into trailer - could be crocodiles or no connector at all. If there is no pre-existing inline "zamp" controller in the OP rig, he will use the controller that comes with the kit.

110V battery chargers and tenders is an interesting question - but I think they mostly use crocodiles or come with bare wires. Still something to keep in mind.

red31

Bryan

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Posted: 01/15/18 12:59pm Link  |  Quote  |  Print  |  Notify Moderator

or it could be a 2 prong connector (not compatible with zamp's polarity)

https://www.youtube.com/watch?v=LShSQeddlgk

maintainer may terminate in 2 prong with various adapters for charging
Includes three ways to connect: battery clamps, rings and 12-volt DC plug, put the rings on a motorcycle batt with the plug accessible, plug in and store.

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