What Is A PV Combiner Box | Enphase IQ Combiner 4
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- Опубліковано 15 лис 2023
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Understanding the basic components of a grid-tied solar system will help you when selecting the right system for your home and monitoring/maintaining your system during the multiple decades of operation. I will provide an overview of a PV combiner box using an Enphase IQ Comber 4 which was recently installed on my home as part of an 11.3 kW system.
Original video showing Micro Inverter setup - • Plugging Solar Panels ...
DISCLAIMER: This video and description contain affiliate links, which means that if you click on one of the product links, I’ll receive a small commission.
So awesome to see our work on your channel! Looks clean and I’m happy you’re happy with your install!
Yeah buddy, thanks for the help Julian 👍
Solar is Fun! I got portable panels, a solar generator and my big 10.3kw roof top system.
What brand did you go with for your solar generator?
@@everydaysolar All Powers for both(Panels and generator). I wouldn't recommend them. My 1st generator stopped charging from all sources in less than 3 months. Its a 300wh one. They sent me a new one. The panels were rated at 140w, was getting max of 50kw on the clearest, brightest sunny day in Summer. They also sent me a new one. That was a good deal for me as I now have 2 panels and connected them via parallel , which I learned how to do from YOUR videos..
Ran into this seeking info since my IQ Combiner 3 PCB failed. They sent me a replacement. But solar company wants $250 just to show up. Nice info.
Thanks for getting me started with my system. I would recommend that you don't poke around and electric panel with a pencil, the graphite center is a conductor. I would like you around to see more of your videos.
Thanks for the feedback and appreciate the concern 👍
Good info.
Thanks for the continued support 👍
Thanks for the detailed info, very helpful!
Regarding the line losses of the AC power coming from the mircoinverters into the combiner box - is there less line losses over these wires because of the fact that this is AC and not DC power, like with a DC power optimizers approach sending DC power over these lines to a string inverter approach, or are these line losses exactly the same regardless if they are sending AC or DC power down from the roof along the same length and type of wires?
Line loss is proportional to the current running through the wires and independent of whether that is AC or DC. With this in mind usually micro inverters (switching to AC) will help to keep your wire gauge lower as the current will be much lower.
Enphase tells you how many micro inverters you can string together, but others don’t. I’m specifically looking at Aptos, and I can’t find anywhere where they say what the maximum number of inverters you can string together is. Am I missing something? Could I just string together 30 Aptos micro inverters and skip the combiner box? Thanks
I can't seem to get this question answered. In a seven K system I am thinking of buying they are using 18 400 watt panels with Enphase 8+ micro inverts and because I want to add a large EG4 PowerPro WallMount AllWeather Lithium Battery | 48V 280Ah | 14.3kWh LiFePO4. They are telling me that they can hook this battery up to my system included in the the cost. This will be a grid tie system so any chance you can tell me how one would connect a DC battery to this Enphase system and make it work. Thanks for any help you can off because I don't want to sign a contract and then not get my battery connected. Thanks again.
Thanks for the info. One question, is the combiner box responsible for detecting any reduction in power in the case of partial shading and/or panel failure? or is that the job of a regulator further down the line?
Good question, when it comes to minimizing the impact of shading on 1 or 2 panels across your entire array that would be handled at the micro inverter. This is one of the benefits of micro inverters even though string inverters often leverage "power optimizers" to do something similar.
The micros communicate with the envoy which is inside the combiner box and then the envoy talks to your wifi. You can see it all in the enlighten app
I live in the Philippines'. The grid has no zero lead. Just 2 127V leads making 240V. How do I connect a combiner box with 2 fases.
What is the best way to upgrade a Solar edge system I’m not outputting enough and need about ten more panels
In that case I would probably stick with a string inverter. What size Solar Edge do you have now? Might also look how you are feeding power into your main panel. If you are going into a breaker on your bus bar you might be already at the max breaker size for the size of panel. You have to follow the "120% rule" called out by NEC. In a standard 200 Amp breaker that would be 40 Amps. Little hard to know all the different factors to consider and you could jump over to our Everyday Solar Facebook Group if you want to dive deeper.
quick question I have a 200 amp meter combo panel that has 4 spaces, that are all full but 1. Can I run a 200amp sub panel off of that? I'm trying to run another 100 amp sub to a shop off of the 200 amp sub(welding shop) is this possible.
Thanks for the videos.
You just have 1 open space? So can’t even fit a double pull 240V breaker ( 2 spaces)?
@@everydaysolar could i transfer the other breaker to a sub panel next to it with more space
That's a huge price on that install.😮
So the input is already from an external inverter. So 3 externals?
Nope, we are using Ephase iQ8M micro inverters. So the output from each of the micro inverters in 240V in series consisting of 9 on 2 of the circuits and 10 on the 3rd circuit for a total on 28 panels/micro inverters. Hope that makes sense 👍
@@everydaysolar is that more efficient than larger inverters?
@@everydaysolar "the micro inverters in 240V in series ", Please correct me if I am wrong. The IQ8M are in series, but the 240V from those MicroInverter are in parallel (to keep voltage at 240V). Each string produce 240V, combined in the combiner box. I assume you have a 120 / 240V "split phase" residential feed thus only 1 phase. (the usual residential feed in the USA, unless you have 3 phases.) Thus at 3:10 you have 2 lines (L1-red, L2-black, N- white). Not 2 phases.
Ground is green
240 V between the L1 and L2.
120 V between L1 and N. or L2 and N (the IQ-Gateway board is connected to 120V)
Does the system have the ability to program to " zero export"?
Yep, if you have IQ7 or IQ8 Enphase micro-inverters and IQ Gateway you can set power export limits.