Is it okay to add more solar panels than your inverter is rated to handle?

[tiloalo]

Thanks for the explanation.
In Germany, you're limited to 600w for DIY installation, but it makes sense to put many more panels to increase production.
However there is lots of contradicting opinion online.

[michaelagnew]

you've just answered a question ive agonized over.... thanks very much

[peterstrous]

Thanks Finn, the limitation on panels on an inverter indeed is not controlled by power size. However, you array will need to be within the voltage limites of the inverter. Otherwise you can blow up your inverter!

[wajinshu]

Thank you. That's why the installer says to me that my 8 kW inverter can handle 9k watts of panel.

[charlest]

The question now is does the same logic apply to MPPT charges? Can they only pull what they are rated for?

[mikaellind]

Hello finn. Thanks for good videos. About oversize, is it ok. to also oversize the voltage in to your inverter not only the Wattage. My inverter is rated for max 500v but all my panels in series are 624v ?

[FaisalDilbagh]

Great information provided. I have 5KVA MKS Plus MPPT 80A inverter, will this inverter support over-sizing?

[jaihind]

What if the inverter VOC is breached when I add more panels i.e.if i intend to add 595 W IN 535 STRING.
Should we not keep an eye on Voc of inverter

[lebogangmogashoa]

This is great information. I have a 2.4kW inverter with six 330w panels and I was wondering if I could add more panels. I suppose the only limitations would be VOC and current (considering the panels are connected in parallel at the moment)

[davinderkamboj]

Hi Finn....This was question for which i was looking answer for so long, Thanks alot.

[samalj]

Hi Finn. Great video, i've subscribed for a while now, always top end stuff!

Do you have, or know of, a video talking about running more than 1 inverter at the same time? For example, running 2 10 kW three phase inverters, and some kind of joined monitoring of them. Not hybrid inverters.

[njm]

Hi, thank you for your explanation. Could you please tell me if the same could work for a MPPT cc. For exemple; can i wire one mppt cc of 40amps imput on 60 amps out from sollar array? Of course, respecting the CC voltage input. Thank you in advance, greetings from Italy. NJM.

[leviahamefula]

this singular video made me subscribe.

i have a question by the way.... does an oversized panel help reduce the direct load off of the batteries? Especially when you are running the inverter while charging it with solar.

my theory is this.

lets say i have a 1kw array, and my inverter load uses 500w. assuming my batteries are all charged up by say 11am while the inverter is still on load, does the system reach an equilibrium where the excess energy is used to carry the load?

[petermartin]

Hi, love your work, should a 6.6 kw panel array with a 5 kw inverter on a sunny cool day with panels facing 335 degrees true on a 22 degree tilt with no shadowing should the system be expected to produce 5 kw or slightly more say between 10 am to 2 pm in August in NSW ?

[Martin-fkog]

How many panel can i put a string series?

[zodiacfml]

How do you wire for oversizing? Common sense would say never go past the voltage ratings of the inverter but if I check the spec sheet of panels, there is no fixed voltage or current and they rise at the same time.

[russellmoore]

I had a 5kW system (28 x 180w Suntech panels) installed in 2010, with a Fronius IG40 inverter, after about 10 years the inverter died so I have bought an SMA Sunny 5kW inverter, I would like to add say an extra 1.6kW of panels, but everyone has said I can't do that with new panels as they must match the old panels. Is there any way I can add extra panels?

[MartinVanMan]

Hi Finn, thanks for the great video.
Since panel prices are going down it would completely make sense to take 8 kW panels on a 5 kW inverter if ýou have the roof space and your energy provider has a 5 kW inverter limit on a single phase.

As long as you limit the maximum voltage (often 550 V or 600 V) at the input side of the inverter this should be no problem, right?

Or do I miss something essential?

[CyborgVampireBell]

What I'm wondering can you over size a charge controller ; like a 40 amp cc receiving 45.8 amps?

[myparadiseonbantayanisland]

How about your charge controller, can you over power that?