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 > Your search for posts made by 'GravelRider' found 138 matches.

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RE: Setting up my solar system

I got the rest of the wiring done and the MT50 remote sensor mounted and wired. https://photos.smugmug.com/RV-pictures/i-MWTd7Gk/0/70d4022e/X3/IMG_20200819_000159-X3.jpg width=640 https://photos.smugmug.com/RV-pictures/i-DRgpchX/0/74614fed/X3/MVIMG_20200818_233916-X3.jpg width=640 So far so good. I towed my trailer to work so I can keep an eye on how it is producing, as I didn't want to leave it on and unattended after getting it first set up. At 7 am this morning, and it's a very cloudy dark morning, the panels were putting out 2 amps at 35ish volts. I also need to weld up some battery mounts and get the other two GC2 batteries mounted in series-parallel. I should be able to get to this over the weekend, but I wanted to test out the solar setup first.
GravelRider 08/19/20 06:45am Tech Issues
RE: Campsite Squatters

This, IMHO, is not right, but better than the scams used to game the res systems. At least the CG is getting the money. It also is evidence to me that the well off are more likely to rip people off than poor. Are you trying to be argumentative with this statement? Jealousy perhaps? Retired Occupy Wallstreeter? And how exactly is this evidence to support your position? You hardly have to be well off to afford a few extra nights at this type of CG. Find a new boogeyman. Sheesh.
GravelRider 08/18/20 08:52am Truck Campers
RE: Setting up my solar system

I got more work done last night on my solar project. Dicor is now on both panels at the mounts. https://photos.smugmug.com/RV-pictures/i-H4pHtZ3/0/58c560f0/X2/MVIMG_20200817_194210-X2.jpg width=640 and I wired the panels to the controller. https://photos.smugmug.com/RV-pictures/i-6VPVJtk/0/f3460135/X2/IMG_20200817_222824-X2.jpg width=640 I still need to weld up some battery mounts for the additional two 6 V GC2 batteries, run them in series-parallel with the other two, then run wires from the controller to the battery bank. I also have to run wires and mount the MT50 remote, the grounding cable, and the temperature sensor, and I'll be done.
GravelRider 08/18/20 06:38am Tech Issues
RE: Setting up my solar system

Looks great. I'm a bit jealous of how much space you've got to work with. But I do like having my roof vents too. I used the same Renogy Zee clips. They seemed fine to me, but the one downside I saw was that it is pretty much impossible to remove a panel from the clips. Can't get to the bolts. Or, you have to pull them up from the roof and tear through the Dicor. If I do have to remove a panel, I won't do either of those. I will just saw through the clips, leaving the lower 'L' portion at the roof, and improvise a different upper portion. Assuming the new panel was the exact same width. It's enough of a long shot idea that I didn't put too much worry on it. I do definitely wish I had an extra roof vent up front... But at least I've got the extra space for panels! These weren't Renogy brackets; they were some offbrand off of Amazon. But I'm sure it's all the same, just branded differently. I drilled the holes in the panel in such a way that the bolt heads are against the side of the aluminum frame, so that you only need one wrench to remove the bolt and reattach it. I'm quite certain it will still be a giant pain in the ass, but it will be doable without having to remove the bracket from the roof itself.
GravelRider 08/17/20 10:01am Tech Issues
RE: Setting up my solar system

I got started on the installation. I got both panels installed, but only got Dicor on one before I lost light for the day. And ran out of light for pictures of both installed too. https://photos.smugmug.com/RV-pictures/i-3ptFv79/0/01ea4360/X3/MVIMG_20200816_193641-X3.jpg width=640 I also got started on fishing the wires... Easily the worst part of any electrical job!
GravelRider 08/16/20 09:07pm Tech Issues
RE: Setting up my solar system

You'll have a nice setup. Thanks. I'll post updates as I get things mounted.
GravelRider 08/14/20 10:30am Tech Issues
RE: Setting up my solar system

I like your periodic table. Oh, nice panels! LOL. Thanks. My garage brewery is off to the left of the picture.
GravelRider 08/14/20 10:30am Tech Issues
RE: Setting up my solar system

For 2 parallel panels no breaker required. For 3 it's a good idea. Usually fuses are used in the combiner box on the roof, not likely they will ever blow. Use 15A as 10A is to close to the panel or whatever the panel specs say. There are effects such as cloud edge that can cause max current. I was doing some more reading and came across this article: https://www.windynation.com/jzv/inf/how-properly-fuse-solar-pv-system#:~:text=Commercially%20made%20solar%20panels%20over,30%20amps%20of%20current%20flow.&text=In%20the%20case%20of%20panels,20%20amp%20fuses%20are%20required. "Commercially made solar panels over 50 watts have 10 gauge wires capable of handling up to 30 amps of current flow. If you connect these panels in series, there will be no increase in current flow so fusing is not required for this string. This is not the case when you have panels connected in parallel, as when connected in parallel the system current is additive. For instance if you have 4 panels each capable of up to 15 amps, then a short in one panel can draw all 60 amps towards that short-circuited panel. This will cause the wires leading to that panel to far exceed 30 amps causing that wire-pair to potentially catch fire. In the case of panels in parallel, a 30-amp fuse is required for each panel. If your panels are smaller than 50 watts, and use only 12 gauge wires, and 20 amp fuses are required." So really I probably don't need fuses at all, since if all the current flowed through just one wire, I'd still be fine. But, after reading this, I think I'll just go with 20 amp fuses.
GravelRider 08/14/20 10:29am Tech Issues
RE: Setting up my solar system

I picked up my panels yesterday. Wow are they big! I'm glad I measured first. Otherwise I'd be nervous about them fitting. I am going to have a hell of a time getting these up on the roof and maneuvered around... https://photos.smugmug.com/RV-pictures/i-XbSFPCW/0/0e18b435/X2/MVIMG_20200814_073236-X2.jpg (They completely cover the door behind it) I ordered an Epever 60 amp MPPT controller. The reason I went with this one was that it had good reviews on Amazon and, more importantly, output wire size is 2 AWG. I was amazed at how hard it is to find output maximum wire size with the vast majority of these controllers. I had to mostly search reviews and Q&A where I could usually only find vague answers from someone who said they "used 8 AWG, and maybe it could fit 6, but I'm not sure," etc. I really appreciated that the Epever does accept 2 AWG and that they clearly state it on their information sheet. As it turns out, I have about 50' of 2 gauge from a prior project, so that'll definitely be what goes from the controller to the battery bank. Everything else needed for the install is now ordered, and scheduled to arrive today and tomorrow. I've got the weekend off, and it would be a great time to install... Except that it's supposed to rain all weekend!
GravelRider 08/14/20 06:58am Tech Issues
RE: Setting up my solar system

I used this on the CC output. https://www.waytekwire.com/item/46691/80A-Bussmann-Circuit-Breaker/ Be aware that generally panels should be connected/disconnected with the CC on. So you would need to pull/insert fuses. I'll be using a circuit breaker (same one you linked, just different amperage) between the parallel connection and the CC, so I'll be able to switch that off without pulling the fuses.
GravelRider 08/13/20 10:07am Tech Issues
RE: Setting up my solar system

By the way, thank you everyone for all of your help. I'm definitely learning as I go.
GravelRider 08/13/20 09:06am Tech Issues
RE: Setting up my solar system

Okay, so now that I'm thinking about it, if I just use a solar parallel connector rated for 30 amps, I could put a waterproof inline fuse on each of the positive leads, then only run one set of wires down, and if I use about ten feet of 10 AWG wire from the parallel connection (48 V, 20 amp), I'll get a 0.87% drop in voltage, which sounds okay to me. In other words: Solar panels --> 10 AWG 48 V, 10 amp (maybe 5 feet?) --> parallel connection --> 10 AWG 48 V, 20 amp (10 feet) --> controller --> 2 AWG 14 V, 50ish amps, likely less due to real world numbers (5-7 feet) This calculator from Renogy recommends 10 AWG if 12 feet or less in the 20 amp run of wire. I think this is very doable and would make my life a lot easier. https://www.renogy.com/calculators#tab_solar-cable
GravelRider 08/13/20 09:05am Tech Issues
RE: Setting up my solar system

For 2 parallel panels no breaker required. For 3 it's a good idea. Usually fuses are used in the combiner box on the roof, not likely they will ever blow. Use 15A as 10A is to close to the panel or whatever the panel specs say. There are effects such as cloud edge that can cause max current. Okay, good to know. I wasn't sure how close the current got to that. Thanks. I'll use 15 amp fuses. I wanted to do breakers, but I couldn't find anything rated for 48 volts that wasn't for a breaker box, so I'll just use two inline blade type fuses. I'm not actually going to use a combiner box. I am planning on using a stud junction block for the negative wires and then I am going to just mount both 10 AWG wires coming from the panels directly to the 30 amp circuit breaker (rather than 20 amps, as per your post above). I'm assuming this won't be an issue, right? And I'm going to do the parallel junction in my forward basement storage area where the controller will be. I'll have to run more wires down, which will be a pain, but I figure this will maximize wire length in the lower current wires and minimize it as the current increases.
GravelRider 08/13/20 08:50am Tech Issues
RE: Setting up my solar system

And by the way, these panels have a short circuit current of 10.19 amps. I'm assuming a 10 amp breaker for each panel before the parallel connection would be appropriate, and then a 20 amp after the parallel connection to the controller, and then a 60 amp from the controller to the battery. Or will I run into issues with the breaker tripping because of that additional 0.19 amps (and 0.38 amps after the parallel connection). To be honest, I don't know how close the current ever gets to the short circuit current with regular use. However, I would assume it does not get close, as normal optimal operating current would be around 8 amps (400/48).
GravelRider 08/13/20 06:42am Tech Issues
RE: Setting up my solar system

Aluminum angle, HD etc sell it. Oh okay! So obvious now. Lol. Thanks for the recommendation.
GravelRider 08/13/20 06:35am Tech Issues
RE: Setting up my solar system

Those are 48v panels, what are you using for a charge controller ? I called a local solar installation business, and they will sell me two 400 watt panels for $500 total out-the-door for both panels. Sounds like a great deal to me and I won't have to deal with shipping. These panels: https://www.solarelectricsupply.com/q-cells-q-peak-duo-l-g7-2-400w-solar-panel I'll be using a 60 amp MPPT controller. I haven't picked a specific brand yet.
GravelRider 08/13/20 06:25am Tech Issues
RE: Setting up my solar system

If those mounts are Z mounts pitch them. Instead use 2x al angle connected with a bolt like a Z and the panels are much easier to remove when needed. A number of posters have used only 3M VHB tape to secure panels. I used VHB tape, screws and sealed with Dicor. I don't know what you mean by al angle.
GravelRider 08/12/20 07:19pm Tech Issues
RE: Setting up my solar system

Panel size didn't line up with the beams and I didn't use the 4' beams initially. The roof is peaked and the beams are flat on 4' centers. Removing some ceiling items like lights determined one location. I drilled a small hole next to one from inside to determine it's exact center location from the roof. From the roof for other beams I drilled a small hole and used a small wire to confirm. I used 3" screws to secure the al angle. Good to know. I'm hoping my install goes a bit easier. This is making me consider those glue-down no-drill mounts... But I don't know that I'd ever be comfortable driving down the road with glue-on mounts...
GravelRider 08/12/20 03:19pm Tech Issues
RE: Setting up my solar system

I had mixed results using a stud finder, but a neodymium magnet found them easily and reliably. This was a trussed roof with rubber overlayment. Unfortunately mine is stick framed. As far as I know there are no metal roof beams that I'm aware of. Grey Wolf 22MKSE Mine is wood frame roof too. Truss refers to wood construction. The magnet finds the staples or screws that secure the sheathing to the trusses (rafters if you prefer). Ah, I see. Good idea on the magnets. I'll definitely use that if my stud finder isn't much help.
GravelRider 08/12/20 03:18pm Tech Issues
RE: Setting up my solar system

I've got a 96" x 115" area forward of the air conditioner... Wow, I never would have guessed that. Never seen that much non-penetrated space. Two of those panels will be sweet. I was actually surprised too when I went up to measure, as it's not a large trailer. Though it's also pretty basic, so not too much stuff up there to take up space. However, in that 96x115" space, there is the stock 50 watt solar panel that I will have to remove. I'm planning to just remove the panel from the mounts and leave the mounts in place. Or maybe it would be better to remove them as well and use generous amounts of lap sealant and/or eternabond tape?
GravelRider 08/12/20 02:35pm Tech Issues
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