In response to being asked about this inverter, below is some of the original Ebay listing.
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The ONE NATION Ultimate 300 Watt Wind & Solar Grid Tie Inverter
All units tested and certified for G83/1 in the UK
RRP £ 100
14V-28V DC / 220V/50Hz AC
Features :
1. The ON300W grid tie inverter is designed for the small solar pv panel & wind energy markets. Suitable for family renewable energy systems.
2. This inverter can be used with solar panels and wind turbines to feed power directly in to the domestic mains grid.
3. Easy to install, just needing solar panel/s or wind turbine, this grid tie inverter, then plugs directly in to any mains socket and feeds power into the domestic mains.
Please note : This inverter only has grid tie inverter function and does not have the traditional inverter function, please do not connect batteries for a 12v dc source. Any further questions, please e-mail : info@onruk.com
1. Ease of use
The ON300GTI can be simply plugged in to any mains socket in the home. The inverter IC (integrated control) monitors the volume, frequency and phase of the mains power on the national grid, then produces a pure sine wave to match the prevailing grid power, when power from the Renewable Energy Generator is sufficient to export on to the grid, the Inverter's uses current controlled Pulse Width Modulation (PWM), to control output power exported to the grid. The inverter will only export power when there is mains supply present (according to G83/1).
2. Why use the ON300GTI ?
When solar panel/s or wind turbines are used through this grid tie inverter, the homes electricity meter counter will reduce in the accumulation of chargeable kilowatt hours (when using other electric appliances), if not stop or even reverse (when no appliances in use).
3. Unique Properties of the ON300WGTI
Traditional grid tie inverters have renewable energy generators connected to them in series, so if one solar panel/turbine doesn't work or is inefficient, the whole system can be effected, but the ON300WGTI, can be used in parallel, such that, with each inverter having its own maximum power point tracker (MPPT), every renewable energy generator / solar panel functions at its maximum potential.
4. Anti-islanding protection
ONWGTI has 3 green led's. When the export function is normal, the 3 lights are lit, but if there are no dc sources (as for example during the night, when no sunshine or on a rainy day), the red led will light and the inverter stops working. In these circumstances, the inverter switches off the connection to the grid and grid power cannot be fed back into the inverter.
Brand
ONE NATION
Model No. ONW300GTI
Continuous Output Power 300W
Output Wave Form PURE SINE WAVE
DC Input Voltage DC 14 Volt – 28Volt
AC Output Voltage AC 190v-250v
Frequency 50Hz
Efficiency 90%
No Load current Usage 0.7A
Distortion 2 %
Temperature Protection 55 Deg.C ± 5
Net Weight 2.0 kg
Assembled and tested in UK
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It looks like any of the other Chinese inverters on Ebay pages, but this one isn't listed at the moment or I would post up a link.