diy solar

diy solar

Recent content by offroad

  1. O

    Multiplus - AC Input Control for SOC control

    The SCC has an Equalize button in settings, so that's pretty easy to implement
  2. O

    Multiplus - AC Input Control for SOC control

    Thanks for the info, Settings for AC Input Control, and others were set using a MK3-USB and my phone through Victron Connect. Yes I'll turn the Multiplus battery monitor off, that was just an experiment. Wondered about the GX requirement, I likely won't get one given the cost of a Cerbo GX...
  3. O

    Multiplus - AC Input Control for SOC control

    I have a BMV-712 and Victron Multiplus 12/3000/120-50 120V that are networked together using VE Networking. I'm trying to implement AC Input Control to get battery bank SOC to stay lower than 100%. I've set up AC Input control and it honors parameters on Load Condition, but doesn't start...
  4. O

    Wire Size from panels to SCC?

    I have two large panels with an ISC of 10.23a each (2x in parallel = 20.46a) and on the sticker the max fuse rating is 20a. They have 12ga leads, would you recommend a 20a fuse on each panel?
  5. O

    Wire Size from panels to SCC?

    Thanks for the tip on the Y cable, that will be easier. Can you expand on why a fuse isn't needed for two panels but would be for three? With a 32a DC breaker on the input side to the SCC (due to the 8ga wire), I'm concerned about 12ga wires on the roof having issues before the breaker trips.
  6. O

    Wire Size from panels to SCC?

    Just finished mounting a pair of 395w panels to the roof of my RV, and want to make sure I get the wiring correct to the SCC. Panels will be wired in parallel to a Victron 100/50 SCC. 49.5 Voc 41.4 Vmp 10.23 Isc 9.55 Imp Max Series Fuse 20A Planning on using wire sizes below. Panels have 5ft...
  7. O

    Need help matching used panels to Victron 100/50 SCC

    I've got space for 4x of the 250w, or easier space for 2x of the 398w. The 100/50 SCC shows support for up to 700w so I'd either be 300w or 100w overpaneled, is 300w too much?
  8. O

    Need help matching used panels to Victron 100/50 SCC

    5th wheel with 300ah 12v LiFeP04, Multiplus 3K, BMV-712, Orion 12/12-18 and I want to add some solar. Planning on a Victron 100/50 SCC and 2-4 used panels around 800-1000w total, and concerned about getting the VOC too high but 150/70 or 85a models are nearly double the price. Used panels...
  9. O

    Anyone had lightning strike your array and get saved by over current protection?

    It's what's in surge protectors to absorb the hit during a surge. The Hughes Power Watchdog 30a and 50a models have replaceable surge modules, so you don't have to throw the unit away after it protects your RV from a surge event.
  10. O

    Insight on my 48v 5th wheel solar equipment please.!

    I used this schematic which uses a manual switch to bridge L1/L2 when on 30/15a shore power, generator (power assist) or off grid entirely. This lets the Inverter power both sides of a 50a split phase AC box, and it works great. In my case the form factor of the older Victron Multiplus was much...
  11. O

    Does my camper have an inverter

    Deleted
  12. O

    Victron Multiplus charge settings for SOK batteries

    With my Multiplus 3000 float set at 13.6v I see voltage is sometimes at 13.7v or slightly above. Is there an issue with a bit of draw via RV lights etc once the battery is in float? I do see that but it doesn't last long before I see power going back in.
  13. O

    Concerned

    Pre-order means they are awaiting stock, these days the arrival could be hard to predict but I wouldn't worry about the safety of your funds. On the slow response they are likely just very busy.
  14. O

    Concerned

    Current connected is a reputable business based on my orders. I'm quite sure you'll get what you've ordered.
  15. O

    SCC choice for these panels?

    I've looked at new 200w panels and they are about $1 per watt or slightly more. The 260w used panels are .25 per watt, and at 75-80% output would be roughly the same as 4x 200w panels. I have space for 4 panels regardless without putting them in places I really don't want to due to shading or...
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