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Old 12-14-2015, 02:42 PM   #41
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Got the AC wired up to the inverter and sub panel. I wanted everything inside the panel to be wired before installing into the trailer. Just makes it easier to do and keep clean. So i added a junction box where i'll pull the 20A interter input circuit and the outlet circuits from the trailer load center. This way I will just need to wire nut three circuits together once everything is installed in the trailer. Much easier than trying to wire the subpanel at that point when this thing is installed under the bed.





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Old 12-14-2015, 03:30 PM   #42
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Got the AC wired up to the inverter and sub panel. I wanted everything inside the panel to be wired before installing into the trailer. Just makes it easier to do and keep clean. So i added a junction box where i'll pull the 20A interter input circuit and the outlet circuits from the trailer load center. This way I will just need to wire nut three circuits together once everything is installed in the trailer. Much easier than trying to wire the subpanel at that point when this thing is installed under the bed.
I was going to put everything under the bed, including the batteries but I am having second thoughts about the inverter. Some of them can make more noise than one would like. What do you think?
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Old 12-14-2015, 03:33 PM   #43
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VERY NICE JOB!!!!
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Old 12-14-2015, 04:21 PM   #44
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I was going to put everything under the bed, including the batteries but I am having second thoughts about the inverter. Some of them can make more noise than one would like. What do you think?
I believe the Magnum's are basically silent. I think I've read that from some others. The alternative is for it to still be in the front storage compartment, which connects to the under-bed storage. So its only a few feet difference...
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Old 12-15-2015, 09:46 AM   #45
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Are you doing an automatic cut-over that shuts-off the inverter feed if/when you plug the trailer into shore power? On my old unit, I installed an outlet, fed exclusively by the inverter, right next to the shore-power connection, and I would do this manually, by plugging the trailer into itself....
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Old 12-15-2015, 10:42 AM   #46
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Are you doing an automatic cut-over that shuts-off the inverter feed if/when you plug the trailer into shore power? On my old unit, I installed an outlet, fed exclusively by the inverter, right next to the shore-power connection, and I would do this manually, by plugging the trailer into itself....
When plugged into shore power the Magnum unit will pass AC through to my sub-panel... and will simultaneously run in converter mode to charge the batteries.

I think the difference is that my inverter isn't powering the whole trailer. I'm pulling just the wall outlet circuits into a subpanel behind the inverter.
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Old 12-15-2015, 10:47 AM   #47
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Max wire size into the Morningstar is 2 AWG. Its a tight fit...



Ran 6 AWG ground wires to inverter, solar controller and solar breaker box.

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Old 12-17-2015, 06:46 AM   #48
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Breakers for the solar controller circuits are finished. Wiring the 2 AWG to the 80A circuit was very easy. The wiring terminal on the 40A was too tight, and I had to pull back some of the copper strands and cut them before it would fit.

I'd actually like to find the add-on terminal and a strip of solid copper stock like is used on the 80A and add it to the 40A. Much cleaner and a more solid connection. But I can only find the part on sites like Alibaba with minimum orders of 1000 units...

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Old 12-17-2015, 10:34 AM   #49
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NICE!
One of the things you need to keep an eye on regarding the thin wire welders cables and connections where only a screw is tightened into the wire, is that they WILL come loose, due to temperature changes and vibration. What I did originally was to take the crimp type lug and cut off the wire crimp end cut that in half and slid it under the screw to give it a wider area to compress the thin wire. The connections stayed tight after that. The object is to put a flat piece of metal between the screw and the wire so that all the pressure on the wire is coming from the inserted piece of metal.

REAL NICE JOB!!
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Old 12-17-2015, 11:44 AM   #50
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Thanks, Don. Glad you called that out as an issue, as its the first thing on the project that i'm just not happy with. More to come once I get it worked out.
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