Most reacted posts

@Daxo Thank you much! Most helpful! My first read through you have answered things I’ve wondered about and created some questions. I’ll think through this info and reply back. Thank you again, Mark

@MrNatural22 Thank you for the info on your system. As I mentioned above, I didn’t come up with much when I queried prior to posting. After posting I queried again which resulted in more info. I do appreciate folks willingness to provide information and details regarding their systems and...

@Daxo We got lucky! The microwave manual is model specific. It is a Goldstar MS-71MDU. This is a picture of the specs.

Thank you again for your assistance. It is very much appreciated! Mark

@byteharmony @Daxo Yes, my first post in this thread was not complete. As I was envisioning two operating modes, a 400W array at times and an 800W array at other times, I was locked in on trying to figure out with two Wattage arrays if operationally I could use one SCC or needing two smaller...

9.3A @ 120V = 1116 Watts. Maybe my thought of a 1200W inverter would not work?

@Daxo Thank you! for the write up! As stated, the primary driver is the cpap (12V) (I see using this system as power outage backup at home also) Another desire - portability - so this system remain this size Therefore, I agree with your 12 volt vision for this system If larger, or grow larger...

Yes, I understand that you, through your experience, have reached the conclusion that a person wants to use that ratio in array design. I wasn’t suggesting adding more panels to my array as I agree with your thoughts on array design. I thought the system might start charging earlier, and keep...

Yes, a cpap is for sleep apnea (a must have for me). I have the 12 volt power supply cord for my cpap that connects to a battery with a “cigarette lighter” power outlet. At home I use the 110 volt power supply. The 110 volt power supply, is a 110 volt ac to 12 volt dc converter. It outputs...

@Daxo Thank you for your assistance. I was looking through the Resources section and it looks like at 800 watts of solar I’m in the could be 12 volt or 24 volt. What I see as an issue with 24 volt is I have to then drop the 24 volts back down to 12 volts. It appears that subjects me to...

@Daxo Thank you for the kind words. Thank you for continuing to ponder the inverter part of my puzzle, much appreciated!! I will not be able to get power to my camper for awhile as it’s currently in storage. If I recall correctly it may not be possible to put a kill-a-watt on it due to plug...

@Daxo It appears from the shadow line on your pv frame, from the white pen??, that the sun is at a very shallow angle, far from perpendicular to the panel at 8:33 am (time on app?)? It appears that, in some locations, it is possible to transition from mega and other fuses to MRBF fuses...

I could also move batteries/controller. A loop for 8 gauge wire might be on the large size so 100 feet is probably a foolish pipe dream.

@Daxo Thank you very much. I’ll study and run a separate thread on the inverter. I have two Victron 100/30’s ordered and I ordered four 200W 24V Solar panels. Once I have everything in one place I’ll work on setup/layout and then I’ll be able to size cables and order them. When I’m at that...

@nifty-stuff.com I have a NOCO genius 10. They are great! You set it and forget it. It monitors the battery and acts accordingly. In the NOCO instructions, it says you can leave the charger connected indefinitely. You might want to check them out.

I’ve added questions, comments in blue print to your discussions. I hope they come through. I welcome your further comments. Unfortunately it appears you have to “expand” sections to see my questions/comments on your discussions. I didn’t realize this when I did this. Agreed I would like to...

@MisterSandals I will be including a cig port in my wiring. A female cig port wasn’t included with the dc power cord so I will need to purchase one separately.

@MisterSandals Thank you for your reply I’ve not done an energy audit. For the first two purposes I’m looking at cpap and possibly minimal LED lighting in the evenings. If I have the camper, I may have minimal use of the microwave (800 or 900 watt). I would guess 10-15 minutes a day at most...

SCC “overhead” - Is this correct? The Victron SmartSolar 150/60 SCC says “Self-consumption” = 35mA @ 12V. (Blue line in figure) Therefore, to calculate the SCC’s “overhead” we take W=(Amps)(Volts) = (35mA)(1000)(12V) = 0.42Watts. Is that correct? The Victron 150/60 SCC has an “overhead” power...

Found a thread on a cpap forum where the person inquired about a cpap model prior to mine but by the same manufacturer, Philips Respironics. Based upon what @MisterSandals said and this answer my cpap should be the same tolerance. This person was concerned as their lithium-Ion battery full...

@Daxo Thinking about your “favorable charging ratio of 2.6:1(Vmp/charging V). Victron says that their charge controllers need battery V+5V (B+5V) to start charging. Am I looking at this correctly to think that as panel voltage jumps up with the rising sun, that it reaches B+5V quicker? How, or...

I anticipate two situations for the solar side of my portable system. One where I would have 800 Watts of solar (rv roof mount + ground). The other, where I’m only able to have 400 Watts of solar (ground mount only, e.g. camping from boat). I’m looking at Rich Solar 200 Watt panels. My question...

Thank you for catching my adding the volts a second time on my 2s2p string.

@Daxo I hope my last reply didn’t sound rude. That was certainly not my intention. Mark

Looking for comments regarding problems or issues and comments in general on my cpap backup. I’m “building” a battery backup for my cpap. I have two purposes at this point. 1) to have it available and, 2) to get actual power requirements with just the cpap, cpap+heated humidifier and...

Looked into panels a little more. It appears to me that these options would fall under a Victron 100/30 SCC. I like the options that allow me to use pre-made 100 foot 8 gauge pv wires giving me more freedom in case of shade. I used Solarwiresizecalculator.com for the pv wire length calcs. The...

@MisterSandals A rough energy audit Calculation errors? Corrections? Comments? Must have Cpap - The 110 volt power supply supplies 12v-6.67amps = 80 Watts 7 hours of sleep = 7x80 = 560 Whrs Optional Camper LED lights, large LED light = 12.8v-0.06amps = 7.68 Watts...

The help here is very much appreciated! Yeah, get some camping back that I’ve missed out on w/cpap and power outage backup for cpap at home. The all-in-one form factor is good, but learning to design and build is way more fun! Mark

@sunshine_eggo Thank you, I queried differently and received more listings. Looking through what came up, but would appreciate any thoughts and suggestions. Thank you again, Mark

Yes, and as this is a mobile system requiring connecting system components, I plan on having a list of setup steps to follow. Here are my calculations - please let me know what I missed. The numbers for Rich Solar 24volt 200 Watt panels are: Voc = 45.4V Isc = 5.83A 2s2p = 90.8V, 11.66A 2s1p =...