Are you positive the 2000 watt model can run 120VAC? All listings for 2000W version are shown for 180-260VAC, whereas 1000W is listed for 100-140VAC. Folks running the 2000 Watt model run 2 CTs in series or parallel, it would seem.
I just checked my G2 manual and where the first 3 ‘connecting methods’ show 3 different ways of connecting a SUN-2000G2 for 240V output, the 4th method showing split phase output states ‘Using two SUN-1000G2 inverters to connect with US split-phase AC grid (good solution).
So it looks like you are correct that the 2000W G2GTIL does not support 110/120V output (and don’t you love how they use a combined manual for two fundamentally different products
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Go to "Solar Grid Tie Inverter with Limiter USA Users" Facebook group for plenty of posts about GTIL failures.
Not a Facebook guy, but thanks.
Some guys have been running them for well over a year. Others get a few months. One way to hedge reliability issues is to get the 3 or 4 year extended warranty on a GTIL purchased from Amazon, or get the Square Trade warranty on GTILs from eBay. For the price, I really don't expect something reliable or well-built. If it costs $275 here, the actual parts value in the inverter has to be very low. As long as no one expects several years of service, I don't think one would be disappointed.
I’ve got a 4kW Microinverter-based grid-tied system as well. I have dual-Microinverters from NEP (Japanese Company) that cost me a little over $200 each and they have run reliably for over 5 years now.
Those microinverters only put out 600W rather than 1000W but my point is that low-power inverters can/must deliver good reliability and lifetime for low $100s of cost.
Whether these early-generation GTILs from China can deliver NEP-like levels of quality and lifetime is unlikely, but those products will materialize eventually.
My plan has been to set up a small 1kW GTIL system to learn and gain experience before investing in a larger 4kW DC-coupled system in 2-3 years (tied to getting an EV).
If these little 1000W GTILs conk out by then, no biggie and either there will be higher-quality GTILs in the marketplace by then or I’ll fall back to a split-phase hybrid inverter (many now ready for prime-time, but at much higher cost).
The cost savings from not having to do any AC rewiring with these GTILs is a major advantage (‘plugs in like a toaster oven’).
The manual is quite clear on the different ways to wire up these GTILs and many/most of the YouTube videos I have seen have involved splicing together 2 CT sensors in an attempt to avoid 240VAC export with a single GTIL inverter. They are not designed to do that and so any Facebook ‘failures’ associated with that bushwhacked wiring/configuration I would take with a large grain of salt…
For simplicity, I would love to get a 2000 watt model that would sync with 120VAC. Running off a battery would be a plus.
Two 1000W 120V GTILs can be paralleled to deliver 2000W of generation capability.
So 4 1000W GTILs can be configured in a 2x2 configuration to offset a full 4kW of 240V AC consumption or up to 2kW of consumption on either leg.
My fridges consume half our annual power and never consume more than 600W after startup surge, so I’d really get no benefit from higher output levels.
When the electric oven is heating, that burns 1.5kW per leg and my pair of 1kW GTILs max out at ~850W each meaning they are only compensating 57% of consumption and the remaining 43% is being drawn from the grid, but that is only during the short time the element is being fired (low duty cycle after reaching target temp) and only for ~1 hour a couple times a week.
120V support is critical for the US market and from my perspective, it’s far more important to support battery-powered operation (and hopefully for less of an efficiency hit) than it is to support increased output levels.
If they crap out on me in less than two years, that will be my biggest complaint, but until that happens, it is how loud these little GTILs are that is my biggest gripe…