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Old 06-07-2019, 02:19 PM   #31
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Originally Posted by david.dgeorge07 View Post
What are you running on 220v. Nice work!
Reasonably- a mini split. I have two 220V outlets planned.

Unreasonably- a washer/dryer combo. I have an 8000w inverter, The draw for an electric dryer is something like 4000w-5000w, which if running for half an hour is half of my battery- so I'll need at least 3 more batteries.
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Old 06-07-2019, 02:23 PM   #32
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Holy batteries Batman!
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Old 06-12-2019, 04:54 PM   #33
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My electrical box

23C1921A-0F74-484F-BDDA-349F18A53165.jpg

The company that I bought my solar components from built a “plug and play” box for me. I have two 100 ah lithium batteries and three 305 watt PV panels. They also set up a 30 amp house power panel with two 15 amp circuits and wired up a cord for shore power. I added the 30 amp inlet and now my 110 outlets are energized. Still working on the 12v circuits
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Old 06-12-2019, 08:41 PM   #34
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Thatís a nice setup in a box. Every system layout is different

Iím very tall and donít like crawling, kneeling, or laying on the floor to use my equipment. I sometimes check it several times a day or even more. One strategy I liked was placing the charge controller and display up at sight level near the front exterior door where I go in and out. Every time I go out I can quickly check the displays. And there was a lot of unused space on the front wall of the short bus. I like my power panel to be where I can see it. And up high out of the way of other stuff.
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Old 06-12-2019, 08:48 PM   #35
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Iím very tall and donít like crawling, kneeling, or laying on the floor to use my equipment. I sometimes check it several times a day or even more. One strategy I liked was placing the charge controller and display up at sight level near the front exterior door where I go in and out. Every time I go out I can quickly check the displays. And there was a lot of unused space on the front wall of the short bus. I like my power panel to be where I can see it. And up high out of the way of other stuff.
Yes, they did put the monitor low on the box but it detaches and the cable is very long. Intend to reinstall it at eye height once I have some more walls up.
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Old 06-12-2019, 08:57 PM   #36
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On a 12 volt system you want to keep wire runs short and use big gauge cable. Donít use the minimum gauge. Oversize. So to minimize the wire runs the charge controller and PV disconnect can be near the ceiling and solar panels leaving space under it for heavier items.
How big of a DC load center to install. Itís nice to have the load center in a metal enclosure. I have done it with everything attached to a panel with no metal boxes but I cringe when I do it. One space saver is to mount the inverter on the hinged cover of the DC load center. If charger is built into the inverter/charger unit this also may save space. Also itís much more integrated system when the charger is built in. Worth the expense IMHO.
Outback makes tiny ď250Ē AC and DC load centers that go on top and bottom of the Outback inverter. These are real space savers. My friend likes to use these in land based fixed systems. Why not use a much bigger box I think for fixed systems. I prefer to spread out the connections a little if there is space. One time I watched struggle to change a connection in the tiny box.
Using soft fine stranded silicon jacketed cable is soooo much easier in tight spaces. But it seems these cables need to be ordered ahead online. Not in the hardware stores
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Old 06-12-2019, 09:09 PM   #37
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Celestina. You have a very nice system. The only changes I would consider aside from the display mounted higher you mentioned is moving the charge controller somewhere more accessible and visible. It often is one of the easiest components to move as the PV wires are coming in from the roof anyway (unless you have a ground level PV array).
That’s a big Midnite charge controller. Maybe you have a lot of panels.
Leaving the controller in place is ok. Especially if you are connected to a laptop and talk to the unit that way. I have not used a computer with any of my systems yet. But it is the trick way to go and I intend to.
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Old 06-12-2019, 09:11 PM   #38
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Quote:
Originally Posted by Doktari View Post
On a 12 volt system you want to keep wire runs short and use big gauge cable. Donít use the minimum gauge. Oversize. So to minimize the wire runs the charge controller and PV disconnect can be near the ceiling and solar panels leaving space under it for heavier items.
How big of a DC load center to install. Itís nice to have the load center in a metal enclosure. I have done it with everything attached to a panel with no metal boxes but I cringe when I do it. One space saver is to mount the inverter on the hinged cover of the DC load center. If charger is built into the inverter/charger unit this also may save space. Also itís much more integrated system when the charger is built in. Worth the expense IMHO.
Outback makes tiny ď250Ē AC and DC load centers that go on top and bottom of the Outback inverter. These are real space savers. My friend likes to use these in land based fixed systems. Why not use a much bigger box I think for fixed systems. I prefer to spread out the connections a little if there is space. One time I watched struggle to change a connection in the tiny box.
Using soft fine stranded silicon jacketed cable is soooo much easier in tight spaces. But it seems these cables need to be ordered ahead online. Not in the hardware stores
This is a pictorial. Where are yours?
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Old 06-12-2019, 09:52 PM   #39
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Yeah, sorry, the above the door charge controller example is on a bus I sold a couple years ago. But I liked that layout fairly well. My current short bus has no system yet. My cargo van and old Motorhome both have systems with so much project materials piled up around them I’m embarrassed to take pictures.
The Motorhome energy system is a prototype I designed with some advantages but also disadvantages. It’s all in a giant heavy duty aluminum box I bolted together and bolted to a huge hitch and slid into the receiver of a heavy class three towing receiver. I have the remote control panel inside the Motorhome but all the equipment is outside. In this mild coastal PNW climate this is doable.
As my energy system is worth as much or likely more than my old Motorhome I can slide the energy system out of the hitch and into another. A nice custom bus is another story. Also a lot more space inside a full size bus for a energy system.
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Old 06-12-2019, 11:08 PM   #40
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Electrical

Here's mine. supports 20 solar panels in two arrays, dual charge controllers, 3KW inverter and 4 220AH AGM Batteries

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