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  • Using a Growatt MIN series inverter with LG Prime battery

    Hopefully this post will help anyone else considering this combination. First, if you want to use this combination for partial home backup, make sure you get a Growatt V2 inverter. The V3 inverter which is all most sellers have will only do whole home backup and you must use their pricey SYN...
  • Change over switch - enclosure question

    I want to use a manual changeover switch to change between inverter/generator/Tesla. Something like this: It is very inexpensive and I can get a matching enclosure for it, but it is plastic. Would that be against code? I hope to use flexible metal conduit for the wiring to and from the...
  • What is Active Power setting on Growatt inverter

    I just got my Growatt MIN11400TL-XH-US connected and running. There is a setting, "Active Power %" I don't know the meaning of, or the best setting to use. The value can be anything between 0 and 100%. Also, what could "Memory Enable" mean? .
  • Surge supression

    Haven't seen this posted elsewhere. The inverter I ordered (Growatt MIN11400) says it has class 2 DC surge protection. My solar panels will be about 100 feet from the inverter on the roof of a barn. Should I add another supressor such as the Midnite Solar? Midnite Solar says to install their...
  • AC Disconnect Installation Details

    I am ready to install my AC disconnect. It has to be accessible to POCO personnel, so to me, that means outside. Here is a photo of where I plan to put it. I chose that location for ease of installation and because the line side connections are on the top of the switch. Is that spot in...
  • Use Main Panel as Critical Loads Panel?

    Is there anything wrong (i.e. against any code) with feeding the output of a grid tie inverter (Growatt MIN144000TL) back to the main service panel through a "generator" circuit breaker and a manual* transfer switch? The circuit breaker would be interlocked with the main breaker of course. The...
  • Main Service Panel Clearance Question

    I am trying to figure out the best place to locate my solar inverter and not violate any codes. Here is the setup: The sprinkler control box is 15 inches from the main panel and the left wall is 28.5 inches from the other side of the panel. The clearance around the panel has to be 30 inches...
  • Panel layout with large trees to east and west

    My system has been up and running for about 2 months now and is generating per spec, even a little above when in full sun. I have an 11.4kw Growatt inverter that sometimes puts out close to 12kw (according to Solar Assistant, anyway). I've read in other posts that too much shade can put stress...
  • Adding a second set of current transformers to compensate for second inverter

    I have an 11.4kw hybrid solar system that is working fine. I just added a secondary system at the barn (more solar panels with individual micro inverters) but the extra production has messed up the current sensing for the hybrid inverter. As you can see below, the CT was located between the...
  • AC coupling - Maximum distance between inverters?

    I searched this site and couldn't find an answer to this question. I also looked at some inverter installation manuals. My solar array and grid tie inverter would be about 300 feet away from the inverter and batteries in the garage (house). This works best for my situation due to lots of...
  • Disadvantages of AC coupling - poor battery charging?

    I've read or seen on Youtube that with AC coupling, the battery charging is one of the drawbacks. That is that you don't get well controlled charging because of the way AC coupling works. Is that indeed a fact, and are there ways around it, perhaps by linking the inverters with a Cat5 cable...
  • Inverter repair (Growatt) without schematic

    I am trying to repair a Growatt MIN11400TL-XH-US. I haven't been able to find a schematic for it, but I do have this generic block diagram, courtesy of RCinFL. I found several damaged IGBT's in the PWM output section, again with thanks to RCinFL who helped with the diagnosis. However...
  • WTB: Growatt MIN series inverter needed for parts

    I have an MIN 11400TL-XH-US inverter that I want to repair. It needs an integrated circuit from another inverter. Prefer version 2. I'm located near Houston.
  • Getting AFCI faults (Growatt)

    I have a Growatt MIN 11400, although this question may apply to any inverter with ACFI. Now that all my panels are installed in their permanent location, I rearranged the string wiring layout. I have 4 strings. The next day I got an AFCI fault, then again the following day. What would be a...
  • Ramp rate settings, according to Growatt

    I reached out to Growatt on the best settings for ramp rate (Growatt 11400 MIN series inverter). It comes from the factory at 15 percent, but I changed mine to 40. Now I may change it back to 15. Here is their response, if you can understand it, your Chinglish is better than mine. First of...
  • Export power limitation setting, according to Growatt

    I asked Growatt about the Export Power Limitation setting. Here is my question and their answer: Question: 1. There is a setting called export limitation power ratio (under system configuration). Now that my system has been approved by my utility, I played with it and I see that changing the...
  • Enphase IQ8 night-time power consumption

    I just bought some used IQ8M's. With 8 panels and inverters connected in one string, the night time current draw is .56 amps on one leg. This was measured with a Fluke clamp-on ammeter. They function normally during the day. Is this typical? It seems like a lot of wasted power. I have not...
  • Growatt MIN series (Shine Tools app) inverter setting for zero export

    There are a few other posts on this topic, but nothing specific to my question. There is a confusing setting on the Shine tools app for the Growatt MIN series inverter. I need to prevent export to the grid until my installation is approved. The setting in question is Export Limitation Power...
  • Looking for a schematic for Growatt MIN series of inverters for repair

    Something shorted or tripped inside my inverter when connecting the Growatt MIN114000TL-XH-US inverter to an LG RESU battery. Now when I power on the inverter it gives a fault that the PV voltage is too high (even though it isn't). I'm not too optimistic that getting a replacement or repair...
  • Adding Enphase micro inverters to Hybrid system

    Is there any problem in having two independent grid tie inverters on the same grid? I currently have a hybrid inverter system (Growatt Min 11.4K plus LG battery) which is working fine. But I need more production to help offset the difference in cost of solar buyback plans. I got a great...
  • Supply side tap

    I'd like to use what may be considered a line side tap installation for my grid tie inverter to avoid having to de-rate my main service panel breaker. I have two questions. 1. Since there is a disconnect between the meter and where I would connect the grid tie inverter, is this still...
  • AC disconnect location

    I found a similar post about this, but it doesn't quite answer my question. I'm in Texas, but I've read that California requires the AC disconnect to be located near the inverter. But I've also read that it is best to have the disconnect outside for easier access to first responders, etc...
  • Ground wire necessary from remote solar array to house?

    I've searched the forums and couldn't find an answer to this question. My system will have the solar array about 100 feet from the house. I've read that it is wise to ground the solar panel frames to earth with a grounding bar (to protect from lightning mostly) so that's what I will do. But...
  • String layout

    There are several discussions here about laying out panel strings, but not related to my question. I have a Growatt MIN inverter with 4 separate MPPT inputs. All thing being equal (sun exposure, wire length, etc) is there any benefit to having all strings the same number of panels? Right now...
  • Metal roof panel mounting - Custom design questions

    I have an R panel metal roof on my barn with a pitch of 18 degrees where I want to mount my 40 360W panels. I want to be able to adjust the pitch a few times a year and so I am planning to design my own framework. I was planning to use treated lumber, but I read in another post that it...

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