|
06-05-2020, 06:26 AM
|
#1
|
Senior Member
Name: Rich
Trailer: Escape
United States
Posts: 106
|
Wiring for portable solar
I’ve got a Renogy suitcase solar panel and separate controller I brought over from our teardrop. I’d like to wire our Scamp 16 for its use. It looks like mounting the controller on the front wall is a popular choice. That would give us access to the nose of the camper and our battery. I plan to go with SAE jacks for the battery and panel hookups on the outside. Am I better of going through the floor or through the fiberglass? Or one of each...the battery will be a more or less permanent connection so I’m thinking of putting that jack on the underside. And then the solar jack through the fiberglass, down low near the electrical cable penetration. One concern I have is telling the two jacks apart, hence physically separating them. Thoughts?
__________________
Rich and Maggie Passmore
2017 Scamp 16
2018 Ford F150 XLT 4WD Supercab
St Paul, MN
|
|
|
06-05-2020, 12:54 PM
|
#2
|
Senior Member
Name: Mark
Trailer: 13' Boler
British Columbia
Posts: 161
|
Hi there,
I carry around a 120w portable 'suitcase' panel with a built in controller (wired behind a panel) and have went with the SAE port on the front of the trailer next to the tongue box.
The wiring goes directly to the battery located on the inside of the trailer. I'll see if I can post some photos soon
|
|
|
06-05-2020, 02:00 PM
|
#3
|
Senior Member
Name: Mark
Trailer: 13' Boler
British Columbia
Posts: 161
|
Front of trailer with solar port next to shore power port
|
|
|
06-06-2020, 07:26 AM
|
#4
|
Senior Member
Name: Perry
Trailer: 2016 Bigfoot 25RQ
Lanesboro, Minnesota, between Whalan and Fountain
Posts: 761
|
Quote:
Originally Posted by fofobraselio
Front of trailer with solar port next to shore power port
|
We also have a Zamp SAE port. For some reason Zamp wires it backwards (red ground, black hot). I know of someone who pulled the Zamp port out using screws on his fiberglass. I installed mine with bolts, using washers on the inside to spread the load.
Enjoy,
Perry
__________________
2016 Bigfoot 25RQ - 2019 Ford F-150, 3.5 V6 Ecoboost,
Previous Eggs -2018 Escape 5.0 TA, 2001 Scamp 16' Side Bath, 2007 Casita 17' Spirit basic, no bath, water or tanks, 2003 Bigfoot 25B25RQ, that we regreted selling
|
|
|
06-06-2020, 01:56 PM
|
#5
|
Senior Member
Trailer: Trillium 2010
Posts: 5,185
|
My solution was simple. I mounted the controller on the back of the panel using velcro and connect to the battery using clamps. No holes in the trailer and the controller is protected.
|
|
|
06-10-2020, 10:32 AM
|
#6
|
Senior Member
Name: Rich
Trailer: Escape
United States
Posts: 106
|
[QUOTE=Raz;780682]My solution was simple. I mounted the controller on the back of the panel using velcro and connect to the battery using clamps. No holes in the trailer and the controller is protected.
I'm back to looking at this approach. I noticed my Renogy suitcase is equipped with the hinged mount for a controller, even though I ordered my panels without. I think I'll just install the controller there and run an SAE jack out of my battery case. But a question about the sequence of connecting when at a campsite.
I have the 20A Voyager controller and those instructions clearly state:
"NEVER connect the solar panel array to the controller without a battery. Battery must be connected first. This may cause a dangerous occurrence where the controller would experience a high open circuit voltage at the terminals."
But with the same solar suitcase sold WITH the Voyager controller, the instructions show connecting the leads using MC4 connectors to the controller first, then connecting to the battery. And every Youtube video I watched for this combination showed the same thing - controller first, then battery. What gives?
__________________
Rich and Maggie Passmore
2017 Scamp 16
2018 Ford F150 XLT 4WD Supercab
St Paul, MN
|
|
|
06-10-2020, 11:50 AM
|
#7
|
Senior Member
Trailer: Trillium 2010
Posts: 5,185
|
Best guess: connectting to the battery first, then to the controller avoids sparks near the battery. I have an AGM battery so thats not an issue.
|
|
|
06-10-2020, 12:17 PM
|
#8
|
Senior Member
Name: Z
Trailer: Sasquatch
Montana
Posts: 2,556
|
I'm just repeating things I read on the internet, but I've heard that some controllers require this, others don't. If the controller says to never connect the panel without first connecting the battery (like the one I have), I would follow that advice, unless someone here knows for sure the reason why you can ignore it.
I have heard that it may well fry the controller if there's no battery hooked up. If there's a way to build these which doesn't cause this, I have no idea why they aren't all built that way...but apparently they aren't. Seems like an accident waiting to happen. I disconnect my battery a lot. Would be really easy to forget to disconnect the panels first.
|
|
|
06-10-2020, 12:23 PM
|
#9
|
Senior Member
Name: Carl
Trailer: 2015 Escape 5.0TA
Florida
Posts: 1,693
|
Quote:
Originally Posted by Perryb67
We also have a Zamp SAE port. For some reason Zamp wires it backwards (red ground, black hot). I know of someone who pulled the Zamp port out using screws on his fiberglass. I installed mine with bolts, using washers on the inside to spread the load.
Enjoy,
Perry
|
Zamp wires them backwards so that the positive wire coming from the panel is a female connector and the negative is a male (protruding pin). Think of one of the truest statement ever made: “You can’t fix stupid.” Zamp wires the way they do to protect stupid people from setting the panel in the sun, and then grabbing the connector to plug it in. If the positive side were a protruding male connector, the aforementioned stupid person could be seriously shocked. It’s electricity, people, and if the panel is in the sun, the SAE connector Is likely a live wire. Use caution when handling any assembly that is carrying voltage. The down side of Zamp’s polarity reversal is that the input receptacle is connected to the battery and the male side is hot. Any child “exploring” where he or she shouldn’t be could get shocked. From a safety standpoint, it is better not to expose a solar panel to sunlight until all connections are made. And I am NOT implying that anyone here is stupid; I’m just explaining Zamp’s reasoning.
|
|
|
06-10-2020, 02:16 PM
|
#10
|
Senior Member
Name: Gordon
Trailer: 2015 Scamp (16 Std Layout 4) with '15 Toyota Sienna LE Tug
North Carolina
Posts: 5,156
|
First consider that the controller is probably not waterproof.
Second, consider that the ideal situation is to mount the controller near the battery. Thats not critical, just best practice.
Lastly, I went back and forth a few times with Renogy Tech Support about connecting the battery first. I asked how long it had to be connected, and if even just a few milliseconds before was OK (as might occur with a relay). The less than convincing answer was that there was no minimum time from connecting the battery to connecting the panel.
|
|
|
06-10-2020, 07:43 PM
|
#11
|
Senior Member
Name: Jon
Trailer: Bigfoot
California
Posts: 193
|
[QUOTE=rpassmore;781183]
Quote:
Originally Posted by Raz
My solution was simple. I mounted the controller on the back of the panel using velcro and connect to the battery using clamps. No holes in the trailer and the controller is protected.
I'm back to looking at this approach. I noticed my Renogy suitcase is equipped with the hinged mount for a controller, even though I ordered my panels without. I think I'll just install the controller there and run an SAE jack out of my battery case. But a question about the sequence of connecting when at a campsite.
I have the 20A Voyager controller and those instructions clearly state:
"NEVER connect the solar panel array to the controller without a battery. Battery must be connected first. This may cause a dangerous occurrence where the controller would experience a high open circuit voltage at the terminals."
But with the same solar suitcase sold WITH the Voyager controller, the instructions show connecting the leads using MC4 connectors to the controller first, then connecting to the battery. And every Youtube video I watched for this combination showed the same thing - controller first, then battery. What gives?
|
I have a 180 Watt Zamp portable solar panel. It is 2 90 Watt panels that are permanently mounted to a 15A waterproof controller which is connected to a Zamp style plug. It came with a cable that has a Zamp connector on one side and clamps to connect to the battery. The controller is always connected to the panels whether the battery is connected or not. Maybe it depends on the type of controller. When I moved my batteries inside, I ran 2 6awg cables and added an Anderson connector. I built an adapter cable with an Anderson connector on one end and a Zamp connector on the other.
|
|
|
06-11-2020, 08:05 AM
|
#12
|
Senior Member
Name: Z
Trailer: Sasquatch
Montana
Posts: 2,556
|
My portable panel was the same way. The controller was mounted on the back of the panel, always connected. But it didn't start charging until it sensed a battery. In fact there had to be a certain level of charge, not just a battery. My friends batteries were dead so we hooked my panel to them. It wouldn't turn on.
Whereas my Renogy controller specifically says do not connect the panels before the battery. So it must depend on the controller. I still don't understand why anyone would make a controller with this "flaw", but oh well.
|
|
|
06-11-2020, 11:16 PM
|
#13
|
Senior Member
Name: Perry
Trailer: 2016 Bigfoot 25RQ
Lanesboro, Minnesota, between Whalan and Fountain
Posts: 761
|
If you install a Zamp port (or any other port) the battery is always connected to the port when connecting the portable panel. So the battery is always connected first.
We have the Zamp port connected to the controller in the camper that is always connected to the battery. The controller should always be as close to the battery as possible to eliminate line losses.
Enjoy,
Perry
__________________
2016 Bigfoot 25RQ - 2019 Ford F-150, 3.5 V6 Ecoboost,
Previous Eggs -2018 Escape 5.0 TA, 2001 Scamp 16' Side Bath, 2007 Casita 17' Spirit basic, no bath, water or tanks, 2003 Bigfoot 25B25RQ, that we regreted selling
|
|
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
» Upcoming Events |
No events scheduled in the next 465 days.
|
|