Diy Rv install

[Scottparrish3k]

For FLA type of batteries you need a charging amperage between C/12 and C/8 where C = battery system Ah rating.

So for a 1320Ah 2volt system you will need between 110 and 165amps from your panels. That equates to 2 charge controllers rated 80 amps each and about 2000 watts of panels.

So you may either reduce your battery system or get a lot more of those 100 watt panels.

With 600 watts and an MPPT CC (rated 60amps) you can get about 50 amps of charging which can support a 500 Ah battery system. So if you can fit 8 of those panels you can get about 67amps so should go with an 80 amp CC and a maximum of 800Ah batteries.

Thanks

[Sunking]

Scott you are lazy and do not know half as much as you think you do. Heck if you would have searched the Off-Grid Section you would have found lots of Sticky Threads that explains everything and answers all your questions. Most of them written by myself which comes with over 35 years of professional experience. If you had started there you would have not needed to ask any questions and expose how much you do not know.

I ggave you the best advice and just added onto what Mike tried to tell you. You are heading to very expensive dangerous mistakes. Grow some skin, the real world is not PC. In th emean time try reading and searching:

Off Grid Design
Battery 4 Dummies
More Battery 4 Dummies.
Charging Batteries

So please go ahead and do it your way, You will wish you had listened.

[SunEagle]

I have 8 6v batteries that are supposedly 330 Ah duracell/penn manufacturing
1320 Ah wired series and parallel was going to be my plan
If I have too large a battery bank at the end of my trip I'll take out a couple. I'd rather have too much then too little. I'm not gonna get 2 weeks off in conjunction with my brother to just mess around for many years to come so I'll know more after the trip what we used what we didnt.
I'm in a hunting class. Have to go now.
Thanks

For FLA type of batteries you need a charging amperage between C/12 and C/8 where C = battery system Ah rating.

So for a 1320Ah 2volt system you will need between 110 and 165amps from your panels. That equates to 2 charge controllers rated 80 amps each and about 2000 watts of panels.

So you may either reduce your battery system or get a lot more of those 100 watt panels.

With 600 watts and an MPPT CC (rated 60amps) you can get about 50 amps of charging which can support a 500 Ah battery system. So if you can fit 8 of those panels you can get about 67amps so should go with an 80 amp CC and a maximum of 800Ah batteries.

[Scottparrish3k]

I have 8 6v batteries that are supposedly 330 Ah duracell/penn manufacturing
1320 Ah wired series and parallel was going to be my plan
If I have too large a battery bank at the end of my trip I'll take out a couple. I'd rather have too much then too little. I'm not gonna get 2 weeks off in conjunction with my brother to just mess around for many years to come so I'll know more after the trip what we used what we didnt.
I'm in a hunting class. Have to go now.
Thanks

[SunEagle]

You should worry more how the new members are treated in your community so they would prefer to stick around, as I stated above I did mix up the terminology thats why Suneagle felt it necessary to chime in he's so wise, pretty soon I could have thousands of condescending posts.

I'm not seeing any real advice. You guys must just scare off the thin skinned newbies.
I have to say I came across this forum in my research
I wish I was born with the solar knowledge you guys were.

It is entertaining during my breaks to check in here now.

I can't really say this forum has been useful but I think the thin skinned individuals are the ones that can't handle the truth.

Thanks for the support.

If you paid attention to what Mike told you in post #5 you would have gotten your answer.

What you have not provided is any information concerning your battery system other then the batteries are 6v and you have them wired in parallel pairs of two for a 12volt system.

If you do not match up the Ah rating of your batteries to the amount of charging amps you get from your solar panels you could easily kill off the batteries by over or under charging them.

To properly help someone to design a system it would be better to provide all the equipment information (panel, charge controller, battery system, inverter, etc.) so that we can give you the best advice. Just asking how to wire panels in parallel and how to connect them to a combiner box with over current protection is misleading and can get you the wrong advice.

So for us to be helpful please provide more information on your system equipment.

[sdold]

Take a look at the nameplate on the panels, they are likely to have a Vmp and Imp rating. Vmp is voltage at max power, probably around 18V for your panels. Imp is the current at max power, probably around 5.5 amps for your panel. They'll only put out maximum power under at those conditions. If you have several panels in parallel, the Vmp is the same, but the current adds accordingly.

That voltage would be OK with a Pulse Width Modulation (PWM) charge controller. The panel would be dragged down to 12V though, so at 12V x 5.5 amps, you'd only get about 66 percent of the power out of the panel. At you load the panel more, the voltage drops, but the current stays roughly the same.

You have an MPPT charge controller instead though, which lets the panel work at 18V while keeping the battery charge voltage down where it should be. This extracts more power from the panel because it isn't pulled down to 12V.

The only problem is that the MPPT controller needs a higher voltage to operate. Yours looks like it needs to be at least 24V for a 12V battery system. Your panels can't do that in parallel, so they must be wired in series to produce more than 24V (but in no case more than 187V). That's good because you'll have less current for the same amount of power due to the higher voltage. I believe two strings of panels don't need to be separately fused, which makes it simpler, but double check that.

The only possible issue I see is that the size of this system might be better suited to a 24V battery. At 12V you'll have charge currents approaching 50A, even more if you add panels. That controller would need minimum 41V for MPPT operation with a 24V battery, but three panels in series is still well over that at 3 x 18V. The rest of the guys will have better thoughts on that.

Typically this project would start with determining the loads in watt hours per day, then sizing batteries from that, and solar array from that. Sunking wrote up some stickies, let me find the links if you haven't seen them already.

Here's my favorite, but there are several others at the top of the Off Grid Solar section of the forum:

https://www.solarpaneltalk.com/forum/off-grid-solar/off-grid-solar-panel-systems/5140-solar-off-grid-battery-design

[Scottparrish3k]

My plan was to get things setup and most likely add 2 more 100 watt 12v panels before I'm finished. My build completion deadline is mid September.
With 3 in series 2 parallel that puts my system at 36volts making the run more efficient over distance and being able to use slightly smaller gauge wire?
I have room for 2 more panels making a total of 8x100 watts at 12v make it 4 in series 2 strings in parallel?
I have a magnum pt100 which looks to be able to handle 12-48v
And a magnum 3012m inverter.


So I would love to have someone that enjoys solar thats interested in helping.

[Wy_White_Wolf]

You a member of this group?

https://www.thesun.co.uk/news/1254262/meet-generation-snowflake-the-hysterical-modern-kids-who-cant-cope-with-being-offended/

[sdold]

I'm not seeing any real advice.

It was up there in Sunking's post: "wire the panels 3 in series with 2 strings in Parallel using a MPPT controller and no need for any fuses" That's a big change for the better, it simplifies the system and produces more power.

[Scottparrish3k]

My Scott is a very thin skinned individual.

I have to say anyone asking for answers for wiring practices concerning solar has not done any research and regardless of their other experience can get themselves hurt.

While Sunking may be a little brittle and offensive at least he does not use foul language that is screened out by the server software.

So stick around and learn or take a hike and hopefully you don't get hurt in the process.

You should worry more how the new members are treated in your community so they would prefer to stick around, as I stated above I did mix up the terminology thats why Suneagle felt it necessary to chime in he's so wise, pretty soon I could have thousands of condescending posts.

I'm not seeing any real advice. You guys must just scare off the thin skinned newbies.
I have to say I came across this forum in my research
I wish I was born with the solar knowledge you guys were.

It is entertaining during my breaks to check in here now.

I can't really say this forum has been useful but I think the thin skinned individuals are the ones that can't handle the truth.

Thanks for the support.

[SunEagle]

My Scott is a very thin skinned individual.

I have to say anyone asking for answers for wiring practices concerning solar has not done any research and regardless of their other experience can get themselves hurt.

While Sunking may be a little brittle and offensive at least he does not use foul language that is screened out by the server software.

So stick around and learn or take a hike and hopefully you don't get hurt in the process.

[Scottparrish3k]

Well, I wired my entire house after having a panel installed.
I created internet in Iraq from nothing by having a satellite shipped from Poland and meeting up with fedex in Bahgdad.
I'm pretty sure I can figure out my solar system, it's just unfortunate the internet is filled with trolls like Sunking. Keep laughing with Sunking that's what keeps the ****bags going in life. Anyways, 4 panels are up and if you see a big rv fire in MA you'll know I didn't wire my panels 3 in series with 2 strings in parallel. And quoting the ****bag Sunking if you look at his post. Its because I just don't "now" about solar. He's so worked up he can't spell
To me he's a dumbass.
Enjoy your day folks

[ButchDeal]

look, Sunking is actually trying to save your life/limbs. Sometimes it takes a smack in the head for people to understand that they have no idea what they are doing and that they are playing with something quite dangerous.

[sdold]

Getting advice from Sunking is sometimes like getting hit in the head by a falling object that turns out to be a big bag of money. His suggestions would simplify your system and end up getting you a lot more energy from the panels you have. After a while you'll be entertained by his posts like the rest of us

[Scottparrish3k]

You need to stop right now. Make sure your insurance covers FOOLS WHO BURN UP RV's WITH SOLAR. If you knew what you were doing you would now to wire the panels 3 in series with 2 strings in Parallel using a MPPT controller and no need for any fuses. Not only are you throwing money away, but a lot of wasted power (changing your 600 watt panels into 400 watts, and begging for a FIRE.

My bad on second thought, GOFER IT.

Sunking I looked up your past posts they all appear negative your life must suck. I do feel sorry for you. I'm glad the internet exists to make pieces of **** such as yourself, who feed off negativity and makes your/their lives worth living.
Although I will still research any and all avenues even if they come from a negative piece of ****.
Review your posts and you'll notice, I might not know solar but it's way better then being an internet ****bag.
Have a great day Sunking