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  1. OffGridInTheCity

    How much solar power should I expect from 500W panels

    OK so we have PV input voltage and total watts consistent with what the SCC can accept and Voc is 101v'ish is comfortably higher than the max battery voltage. *FYI - can you share the model of SCC?, maybe someone will be familiar with settings to check. Some possible issues that come to...
  2. OffGridInTheCity

    How much solar power should I expect from 500W panels

    Can you share details (model and specs) on your SCC? Maybe the 2s voltage range or overall wattage coming in does not match very well.
  3. OffGridInTheCity

    How much solar power should I expect from 500W panels

    Can you share details on your Charge Controller / Battery-bank / setup. Looks like you're showing an off-grid setup? Is your battery full? (what's the voltage range you're using). As mentioned above, the Charge Controller will throttle input if you're not using PV and your battery is full.
  4. OffGridInTheCity

    Connecting solar to house, without connecting to grid

    The ATSs I listed above (Go Power and Progressive Dynamics) don't have current limitations / load shedding relays - they're just interconnected mechanical relays with an XXsec delay control board on the generator side input to let a generator stabilize after startup.
  5. OffGridInTheCity

    Connecting solar to house, without connecting to grid

    I use - 2 of these (Go Power ATS) - they are 120v @ 30a - https://www.amazon.com/gp/product/B00153EYTO/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 - 2 of these (Progressive Dynamics ATS with Surge) - 240v(120v) @ 50a -...
  6. OffGridInTheCity

    LVX-6048 Ground Fault

    I have a LV3048 in a trailer. When I plug the 120v input (to the LV3048) into a house circuit with GFCI it trips 'soon' (second or 2). The ground is the house ground -> LV3048 -> trailer distribution box -> various things (hot water heater, TV, etc). Nothing is grounded to the trailer frame...
  7. OffGridInTheCity

    Has the group been hacked?

    No problem :)
  8. OffGridInTheCity

    Has the group been hacked?

    I got spamed on tis forum + another forum that uses this software - in just the last few minutes. Both of the spams appeared to come from the same user id and the message I got was the same exact words.
  9. OffGridInTheCity

    Has the group been hacked?

    Just got the same sex spam on this forum and on another one - same id / private message - exact same words.
  10. OffGridInTheCity

    How does your inverter deal with ground.

    At the US AC level I believe I understand and all my stuff is grounded. Its the DC side - e.g. the battery - that I don't get. I have a 48vdc system. In general what's the logic of DC ground vs AC ground - can they be shared? should thy be different? does DC need to be grounded? I have...
  11. OffGridInTheCity

    How much solar power should I expect from 500W panels

    New panels. After 3 years of operation I observe.... On clear'ish hot summer days... I get at least 80% of the rated PV on typical summer days. I attribute 5%'ish of that 'loss' to sub-optimal angle + dust on them. 10% of that is likely HEAT 90-100F/32-38C - this is a noticeable factor...
  12. OffGridInTheCity

    BigBattery 12v 170AH in series balance issues.

    Seems like there's often the question - can I combine self-contained batteries with their own BMSs. For example, can you put 2 x SOK (12v) in series for 24v or any set of self-contained batteries with their own BMSs. One answer seems to be - some manufacturers explicitly support this up to X...
  13. OffGridInTheCity

    BigBattery 12v 170AH in series balance issues.

    Sounds like the BMS on one of the batteries is doing hi-voltage cut-off too soon. Yikes... I'll be interested to follow this. Did you query BigBattery/ are they responsive on this question?
  14. OffGridInTheCity

    Batrium BMS setup 8s3p

    I run 2 Batriums - so I can see what's happening in my home powerwall packs and in my trailer. Balancing is misunderstood (in my opinion) and leads to long discussions about 'active balancers' and other topics. The key thing is that healthy cells (no self-discharge) that are well matched...
  15. OffGridInTheCity

    Lean-to Shed Solar Power for Year Round Use

    Yes. As I understand it - "MPP Solar" is the overall company. PIP is a short-hand term for *off-grid* models as apposed to hybrid models. The LV2424 is an off-grid model. Most jurisdictions require a fireman's quick-disconnect (an off switch or breaker) near the panels on the outside...
  16. OffGridInTheCity

    Lean-to Shed Solar Power for Year Round Use

    Yes sir - looks good. From a wire perspective - I'm sure you'll be < 10a per string. So you can go down to 14awg (15a rated) if you wanted 4 wires and keep the $ down. However - I don't know your physical setup.... One of the reasons I use 10awg is because 'PV wire' is typically UV...
  17. OffGridInTheCity

    Lean-to Shed Solar Power for Year Round Use

    Great question! The MC4 Y/Branch connectors would 'combine' out at the panels and 2 wires would run into the control box. The diagram has 4 wires running to the control box... with a circuit breaker on each string... and then combining. If the distance if long (like 100-200ft) then...
  18. OffGridInTheCity

    Lean-to Shed Solar Power for Year Round Use

    I use Midnite Solar MNPV6 (6 circuit breaker) box - https://www.solar-electric.com/mnpv6.html - but they make 3 position as well. You just cut that top plate (combiner buss) to 2 circuit breakers for your 2s2p. That leaves the other 4 circuit breaker slots open. The box also has bus bars...
  19. OffGridInTheCity

    LV 24 PIP won’t supply continuous output for certain appliances.

    Could you clarify - are you pulling your power from the 120v output of the PIP and then converting that to 12v? or do you have a 12v tap directly off your batteries or other? It sounds like the PIP inverter/output is periodically checking for load but is not detecting 'enough of a load' to run...
  20. OffGridInTheCity

    Long term experience with inverter?

    Out of the AIMS line - they make a few that are ETL (e.g. as good as UL - certified components) - https://www.aimscorp.net/search.php?mode=search&page=1&keep_https=yes I went with AIMS 12,000w ETL. To date (aprox 2 years) - a total of 15,565hrs of operation producing 36,131kwh of power - no...
  21. OffGridInTheCity

    Lean-to Shed Solar Power for Year Round Use

    Congratulations on taking the plunge... I so much enjoy capturing power from the Sun on my own. Its just a gift that keeps on giving and I suspect you'll become addicted as well - fair warning! :) I usually do Panel -> mc4 | mc4 -------> circuit-breaker-near-LV2424 --> LV2424 (see comment...
  22. OffGridInTheCity

    Critical Loads Panel Wiring question

    The youtube is showing a different (multi-panel) setup than the Sol-Ark diagram. The Sol-Ark diagram is similar to what I run - e.g. "just" the main panel with MTS. Here's my setup - the ATS = Sol-Ark for purposes of this comment. The Pro/Tran 2 is the MTS. >The above image is from the...
  23. OffGridInTheCity

    Solar Trailer Recommendations

    I have a 7 x 14 cargo -> trailer conversion - running 100% on solar 24/7 in spring/summer sun even with 9000BTU mini-split running 24/7 - I'd go heat-pump!! Mini-split or wall unit but efficient heat-pump all the way. - I've got 4 x 300w panels (flat) on top. At 7 x 14 I can appreciate 5 x 10...
  24. OffGridInTheCity

    advice on 800w 24v system

    Just one comment on the 35a solar panels fuse. The solar panels will produce a max of 12a. And just fyi - panel 10awg / MC4 connectors max out at 30a. So I'd go 15a or 20a instead of 35a as 35a is too high to protect the wires :) ------ A tip from further down the road that works for me...
  25. OffGridInTheCity

    advice on 800w 24v system

    I think I see a 1200w/24v = 50a inverter + a 40a dc->dc converter. So let's say 60a max current from the battery side. You might get by with 6awg but 4awg would do it. I like to use 'welding wire' such as this -...
  26. OffGridInTheCity

    Sizing a whole house generator for a 3 Ton Air Conditioner

    How about replacing this power (surge) hog with one or more mini-splits or whole-house heat-pumps that don't have "surge". Home Depot has 36,000 BTU mini-spits. For example, my Lennox 4 ton heat-pump compressor has a max of 18a@240v = 4,320w - e.g. a more common 7000w generator would...
  27. OffGridInTheCity

    MPP 12v 1kW Model All In One, is this still a viable option for me?

    Sure. Just run a 120v wire with a plug on the end from the MPP Solar 120v input terminals... and plug it in. The PIP will use this power to charge the batteries + give 120v power out thru the inverter whenever the generator is running...
  28. OffGridInTheCity

    MPP 12v 1kW Model All In One, is this still a viable option for me?

    Perfectly good question :) Yes - anything that's on will draw some load - including the MPP Solar unit. The MPP Solar draws around 40w sitting idle and the 24vdc -> 12vdc is tiny compared to that. You can put a switch on the battery -> step-down unit. You can also go 120v -> 12vdc so...
  29. OffGridInTheCity

    MPP 12v 1kW Model All In One, is this still a viable option for me?

    One of these 24vdc -> 12vdc - https://www.amazon.com/Cllena-Converter-Regulator-Transformer-Waterproof/dp/B07B4HLXBT/ref=sr_1_4 - you can choose the level of amps you need.
  30. OffGridInTheCity

    MPP 12v 1kW Model All In One, is this still a viable option for me?

    You're in the correct zone :) If I may voice a couple of thoughts: 1) As an alternative, you could put your 2 x SOK batteries in series for 24v and then go with the 24v - LV2424 model https://usamppsolar.com/product/pip-lv2424-msd/ You'll have the same battery power as 12v in parallel. You...
  31. OffGridInTheCity

    Solar questions

    I have a larger off-grid system that generates 18,000kwh/year. This is panels, charge controllers, battery bank, Batrium, inverters, ATSs, UPSs - the whole shebang involved with off-grid. 2/3 of this I did myself for significant $ savings - particularly around the battery bank and a ground...
  32. OffGridInTheCity

    Battery DC Disconnect Switch Sizing Question

    What's the purpose of this 'disconnect'? To me - there is a distinction between a breaker/fuse and a shunt-trip (emergency) disconnect. I have properly sized circuit breakers for each charge (amps coming in) and discharge (amps going out) unit connected to the battery buss-bars - to...
  33. OffGridInTheCity

    Lean-to Shed Solar Power for Year Round Use

    Bascially the total voltage (of panel or panels in series) should be higher than the battery max voltage - e.g. at least 30v for a 24v battery. 40v+ is probably better - some say 20-30% higher than max battery voltage - but this actually depends on the PV charge curve which is specific for the...
  34. OffGridInTheCity

    MPP Solar, stop from utility charging?

    Here's a 48vdc -> 30a 12vdc - https://www.amazon.com/gp/product/B07ML5ZML2/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 Not sure of your wiring, but if 30a is not enough - maybe do 2 of them? And here's a 120v -> 83a 12vdc -...
  35. OffGridInTheCity

    Trying to find solar panels two types or compatible ones.

    Ironridge has 40mm stuff such as https://www.solar-electric.com/ironridge-ufo-stp-40mm-m1-stopper-sleeve.html You might have to edge the exiting 30mm panel and start a new edge with 40mm panel - but that would only be an extra 1/2"? along the track or put a 10mm spacer under the 40mm 'head'...
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