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diy solar

diy solar

Most reacted posts

  • Post in thread: Parallel/Series panel with RSD

    Tigo TS4-A-F - 700W(rapid shutdown only) is $30 - connect to 2 panels, so $15/panel added cost Tigo TS4-A-O - 700W(rapid shutdown + optimize + monitor) is $43.53 - connect to 2 panels, so $21.77/panel added cost The extra cost of $6.77/panel for optimization/monitor is worth it to me since...
  • Post in thread: need estimated cost of going from grid tie to hybrid

    So a hybrid pv system always have 2 inverters where 1 of them would act as the grid so the other inverter thinks it is always connected to the grid?
  • Post in thread: need estimated cost of going from grid tie to hybrid

    They added battery because the system is in California, where net metering value went down by 75% for new systems, and Time of use rate is ridiculously high. But yeah, time to go down the diy route, seems super feasible based on what i found so far
  • Post in thread: powerpro cable sizing

    I am getting confused by what cable sizing I need to connect between my 3 powerpro batteries (in parallel) connected to a 18kpv. The 1st Powerpro is going to be directly under the 18kpv, where the other 2 will be ~20ft away from the 18kpv. I saw the recommended cable is 2/0 which is rated for...
  • Post in thread: EG4 18KPV MPPT Input and Output per leg

    The EG4 18K PV has the following spec for PV Input AC Input Data MAX. AC INPUT POWER - 12000W PV INPUT DATA NUMBER OF MPPTS - 3 INPUTS PER MPPT - 2 (MPPT 1) | 1 (MPPT 2) | 1 (MPPT 3) MAX. USABLE INPUT CURRENT - 25A (MPPT 1) | 15A (MPPT 2) | 15A (MPPT 3) MAX. SHORT CIRCUIT INPUT CURRENT - 31A...
  • Post in thread: powerpro cable sizing

    I posted my setup based on the manual wiring. the 2nd battery is 20 feet away from my main battery. I saw that the manual only need 1 positive and 1 negative to parallel the batteries. Do I need to upsize the 20 feet cable that is connecting the main battery and battery 2? I have already read...
  • Post in thread: EG4 18KPV MPPT Input and Output per leg

    do you know what would be considered as bypass? only power pulled from the grid to help power loads? or does power generated from a pv array stored into the battery in a dc coupled system would also be considered as bypass?
  • Post in thread: Parallel/Series panel with RSD

    I am planning to get 400W panels, and use Tigo DC optimizers to comply with Rapid shutdown device (RSD) requirement and monitor the system. the panels are Axitec 400W Solar Panel 108 Cell Bifacial Short circuit current Isc: 13.79A Open circuit voltag Uoc: 37.07 V RSD are required at each...
  • Post in thread: powerpro cable sizing

    I see, thank you. Unfortunately don't have enough space anywhere to be able to put the inverter and all the batteries together. Below is my current designed battery/inverter placement. Trying to make the install as simple as possible at the moment. Was considering having rack mount batteries at...
  • Post in thread: Combining rack grounding?

    From the permit that Greenlancer designed for me, there is only 1 ground wire from ALL of the solar arrays to the EG18k pv, that means the exposed copper grounding wire for the racks are combined. I seen a bunch of videos for solar installation on youtube, but I didn't see one that go into...
  • Post in thread: EG4 18KPV MPPT Input and Output per leg

    Yeah, 15 panels barely made it within the voltage at -1°C for 600V open-circuit voltage (Voc): 37.07 Voltage Uoc (temp coef) of 0.28/°C Standard test condition of 25°C expected lowest temperature of -1°C (so 26°C change) so 26*0.28/100 * 37.07= 2.70 V change so each panel would have 39.77V 15...
  • Post in thread: need estimated cost of going from grid tie to hybrid

    I got a quote from contractor , $65k for a 16.94kw pv system with 20kWh battery. They messed up the inverter in the quote since the include inverter is rated for 7kw input while my system is 16.95kw) Assuming they are going to SolarEdge SE10000H-US when I ask them for correction. Panels: 44...
  • Post in thread: powerpro cable sizing

    thank you, I will research into how to match the resistance then.

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