How to Design an Off-grid Solar Power Array Wire Configuration

0:42 3 important variables
1:12 EPever MPPT
3:19 24V 1050W Example
4:21 12V 1050W Example
5:34 MPP LV2424 Example
7:18 OCPD for multiple strings
10:13 12V PWM Example

*Does off-grid solar confuse you?*
Check out my DIY friendly website for solar system packages and product recommendations, and so much more!

*Join our DIY solar community*
#1 largest solar forum on the internet for beginners and professionals alike:

*Check out my Book*
Best-selling and beginner-friendly guide to 12V off-grid solar!

*My DIY Solar Equipment Recommendations (Constantly updated! Check here first):*

*My Favorite Online Stores for DIY Solar Products:*

*Signature Solar*
Offgrid One-Stop-Shop. Best Value 48V LiFePO4, Victron and Offgrid Specific Heat Pumps:

*Current Connected*
SOK, Victron, Mr.Cool Heatpumps and High Quality Components. Fantastic customer support:

*Litime*
My favorite 12V budget battery!:

*Epoch Batteries*
My favorite high-quality 12V battery:

*Renogy*
A classic 12V solar store that has been around for ages! DC to DC Chargers and more!

*Rich Solar*
Renogy's biggest competitor! Similar products, but at a better price:

*Battery Hookup*
Cheap cell deals
5% off code: diysolar

*Contact Information:*

*FTC Disclosure Statement and Disclaimers:*
Every video includes some form of paid promotion or sponsorship. Some links on this youtube channel may be affiliate links. We may get paid if you buy something or take an action after clicking one of these. My videos are for educational purposes only. Information is subject to change/update at any time. Electricity is DANGEROUS and can kill. Be smart and use common sense :)

DIY Solar Power with Will Prowse is a participant in the Amazon Services LLC Associates Program,

[WillProwse]

0:42 3 important variables
1:12 EPever MPPT
3:19 24V 1050W Example
4:21 12V 1050W Example
5:34 MPP LV2424 Example
7:18 OCPD for multiple strings
10:13 12V PWM Example

*Does off-grid solar confuse you?*
Check out my DIY friendly website for solar system packages and product recommendations, and so much more!

*Join our DIY solar community*
#1 largest solar forum on the internet for beginners and professionals alike:

*Check out my Book*
Best-selling and beginner-friendly guide to 12V off-grid solar!



*My DIY Solar Equipment Recommendations (Constantly updated! Check here first):*








*My Favorite Online Stores for DIY Solar Products:*

*Signature Solar*
Offgrid One-Stop-Shop. Best Value 48V LiFePO4, Victron and Offgrid Specific Heat Pumps:

*Current Connected*
SOK, Victron, Mr.Cool Heatpumps and High Quality Components. Fantastic customer support:

*Litime*
My favorite 12V budget battery!:

*Epoch Batteries*
My favorite high-quality 12V battery:

*Renogy*
A classic 12V solar store that has been around for ages! DC to DC Chargers and more!

*Rich Solar*
Renogy's biggest competitor! Similar products, but at a better price:

*Battery Hookup*
Cheap cell deals
5% off code: diysolar

*Contact Information:*


*FTC Disclosure Statement and Disclaimers:*
Every video includes some form of paid promotion or sponsorship. Some links on this youtube channel may be affiliate links. We may get paid if you buy something or take an action after clicking one of these. My videos are for educational purposes only. Information is subject to change/update at any time. Electricity is DANGEROUS and can kill. Be smart and use common sense :)

DIY Solar Power with Will Prowse is a participant in the Amazon Services LLC Associates Program,
An affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com

[JMaahs]

I don't know why I'm having such a hard time grasping how this all comes together but this video is one of the clearest I've seen. This whiteboard classroom style is really really good. Please keep doing these Will. Thank you!

[richardvandenberg]

Every video you make does not have any annoying music, is straight to the point, fast and clear. That is so hard to find on YouTube!
Thank you for that! Keep on making great content.

[theresahartman]

I’m really not understanding it all yet, but I’m going to keep on listening and watching until I get it. Thank you so much for all your hard work!

[roscmon]

Thank you, thank you, thank you. I wish other youtubers would take their instructional video tips from you.

First of all, you didn't need to use background music as some kind of crutch/enhancement. The purpose of your video is instructional and I think you realize that trying to enhance your videos with crappy background noise only distracts and interferes with your instructions.

Second, you already know the material and have the points clear in your head. You don't speak in a halting manner, you don't ramble, you explain clearly. You don't try to speak in an overly animated style and neither do you tone it down to the point that it puts people to sleep.

Thirdly, you have great video quality. No shaking constantly moving screens, no blurry videos, and low sound quality.

Fourthly, you use a good amount of visual aids and they're very effective.

Fifthly, you actually respond to commenters. You don't just stick a video up there and then ignore the people who comment or ask questions. So many youtubers will upload an instructional video and then never even come back and respond to questions.

So just thank you. Please don't change. I wish everyone could take tips from you.

[DrJekyllonHydePark]

I've been in the solar industry for over 10 years now, and still feel like I learn something from every one of your videos! Keep up the great work!

[NukeFPV]

Wow Your "Honesty" is staggering.... AND the reason you are no longer living in an RV.... Keep it up Bro !! We luv ya here in Melbourne Australia :)

[dondonofrio]

I think more people have learned about electricity from you than any other place. You are a breath of fresh air thank you

[orbitalair]

Thanks to you I set up my unpowered shed with solar and a battery bank. I started at 12v, but quickly calculated that using a 24v invertor would reduce the wiring cable sizes and other headaches. So I reconfigured for 24v. But then, that meant I needed to add a 24v to 12v dc to dc convertor. Nice warning about parallel strings. Thanks.

[alanhillberg]

You mention you get frequent requests for the basics. You may want to consider putting links to some of you videos in the comments, and direct viewers to them. I always enjoy your content. I'm not building anything at the moment, but watching your videos gives me the confidence that I can do it myself. Thanks so much. :)

[RJAZ]

Dude... we are not worthy of the excellent explanations you provide. THANK YOU!

[fisherus]

I am glad to see you do a video of this nature for several reasons. First let me start by saying your either your articulation skills have improved or my knowledge on solar has vastly improved due to your former videos I watched before taking on a 10K Watts 48V system. Because, I still run a couple of 800W 24V systems, I like to watch you videos in this arena to see new MPPT controllers be tested alongside the battery testing you do. Some of this equipment wears out and need repairs or replacement every so often. Thanks again, Will, for sharing your genius in solar systems!

[bentleyjarrard]

Lots of great technical details, well done. I would agree that it is very important to leave some "head room" in both voltage and wattage when designing a system. The rated output of a solar panel is determined under ideal laboratory conditions and in practical usage generally only produces real usable power of 75 to maybe 80%. Based on this, it would be tempting to install for example 500 watts worth of solar panels on a 400 watt charger which will work just fine most of the time. However, on certain days just after a good rain when the temps are down, air is clean and the clouds are breaking up there can be momentary magnifying effects that will actually intensify the sun so much that a solar array can produce more than its rated capacity. I've seen brief periods of up to 3.2 Kw from our 2.8 Kw system.

[iztherelife]

Will Prowse made our system possible. After watching countless videos we began to understand things enough to finally make a decision. For us, the hybrid system all in one was answer. We got Geowatt grid assist system and bought from one of Wills suggested suppliers. We’re not running but half the system right now since we’re waiting on our batteries to arrive. But in the mornings I love when the system turns on and is producing. And it starts very early in the day. Surprisingly, it also stays on later in the evening than we ever would have imagined. We are quite pleased even with just half the system up.

[SD_Alias]

i just discovered your channel yesterday and must say you are the best teacher of that stuff i ever saw. Although i am a 50 years old analogue guy and my english could be better ( i am german ) i understand all well. It is a bit overwhelming because there are so many videos on your chanel and it is heavy to find out where to start. I know this and that about electric but not so much about electronic and computerstuff. But i think a little time investment and i will learn a lot. And although some things are different here compared to the US electrics and some Brands are unknown here it is easy to translate it to german brands or at least most are even chinese…
Thanks a lot i just subscribed and will get your eBook.

[michaelgibson]

Thanks Will! Helps me out a lot with choosing and wiring in my RV's solar array. Will be: 2x100w panels in parallel --> 30A PWM charge controller (renogy wanderer 100W charge kit + 100w panel) --> 2 x 215AH 6v golf cart batteries in series --> 500W inverter until I get my bigger inverter. Will add a battery monitor when I can too. Solar panel ordered, can't wait to test it out

[wakeupandbord]

All your free content is greatly appreciated and to be frank, you just seem like an amazing, contentious, good-hearted person. Videos have been great and the website has assisted me more times than I can count. Always learning something new about solar from you.

[trektorsanchez]

THANK YOU FOR NOT VOCAL FRYING! OTHERS HAVE ANNOYING VOICES AND DON'T REALLY KNOW WHAT THEY'RE TALKING ABOUT. YOU ARE CLEAR AND LOUD ENOUGH FOR ME TO UNDERSTAND PERFECTLY. OTHER START OFF WITH UMS, THROAT CLEARINGS AND OTHER ANNOYING SOUNDS THAT TAKES AWAY FROM THE ACTUAL PRESENTATION. I CAN ACTUALLY WATCH YOUR VIDEOS OVER AND OVER AGAIN AND ACTUALLY UNDERSTAND WHAT YOU'RE SAYING, THANKS AGAIN FOR EVERYTHING.

[Umwee]

Wow had me scratching my head on this one. Was way confused on how you got the voltage to be additive in parallel and watts additive in series. Blew my mind for more than a minute... Great videos Will

[MasatoKay]

My GF bought your book, its extremely informational and easy to follow!