I have waited the week but cant any longer I must now order my parts so I can make my inverter run direct off panels, I have to get my parts ordered, no one sent me even one picture of there unit (if they had ones?) so I could be sure it was the right model. It looks like I will conclude everyone is good for power, so I will worry about myself and modify my unit accordingly.

I have tried to stay away from kijiji, but its not been easy. I have failed at trying....I picked up another unit, I didn't want to but if you remember on page 3 I got a 5000 watt unit last June, mod sign, high freq unit. Well I have been using that unit hard now, with a range of everything from industrial tools to even roughly 1990 era transformer driven compact florescent (who remembers them), and of course its been running my whole house just fine the last 6 months.. I think its been about 6 months. I have driven this unit into overload on purpose to see what it would do, and I am impressed. So when a used one came up on Kijiji with make a offer for a price, I made a offer and to my surprise it was accepted, I headed in that same day to pick it up before someone else could offer more... Anyway I am now the owner of two of these. This one is a little scratched up but that's fine by me dosnt effect performance, the price was right, or I should say way better than new.

One of the impressive features I have found using this unit is that The cooling fan never really comes on, My fridge, freezer, a couple lap tops running ( I don't watch tv ) maybe 10 or more LED lights running, music playing (little boom box), a ceiling fan, A pressure pump cycling on and the inverter runs dead nuts silent. The fan motor wont come on until the draw is over a steady 49-50 amps from the batteries so that would be 12.5 volts x 50 (amps) = 625 watts. So you need to be pulling north of 600 watts to get the fan to spool up. That is really nice as it basically never runs. When I was in this unit I noticed that the boost section had power divided (dissipated ) over 40 FETS, That's a huge number!
Looking at the surface area of the case that the fets mount to, considering the number of them, I estimate that if the fan motor failed I am certain you could run this unit continuous at 1500 watts, maybe as much as 2000+ watts. I bet I could unplug the fan motor and in the way I use the unit I bet it will run just fine even with me burning the odd welding rod, I think I am going to do just that and test it out. I had expected I would have switched back to a sign wave unit by now but this one is so good, better than some sign waves, that I have just been in no rush to do so....

I did what I said, I unhooked the cooling fan on the above unit and have been using it that way for over a week now...no problems at all...im not leaving it that way, I will hook it back up, I just did it for a test and it passed, I know when I start welding with it, the fan will be needed then, but for all my ordinary house needs including the toaster, and microwave, washing machine, dish washer...it ran just fine, I kept my eye on the case temperature both by feel and with a IR gun, and in my judgement while the case temp would rise (especially defrosting something with the microwave on full power) it was only a few degrees, not a big deal.
I seen inside this unit thermal sensors mounted on the fets, so if the internal temperature ever did rise to much the unit would shut down to protect itself. So its a reasonable conclusion that since it didn't shut down during normal household use without the fan, I can keep on running this unit just fine if the fan ever failed.....

I was in the big city and decided I needed to up grade my inverter fuse as it was sized for a much smaller inverter than I am now using. So I picked up a 300 amp fuse insert.

So now I am good for just shy of 4000 watts (12.5x300= 3750) of available continuous power from my system (Sun out, and batteries charged and willing of course)

Since I started using this inverter I have done all my welding with it, even some big projects, the generator sits idle now....

While picking up this part I asked for a price quote on batteries......I was shocked, prices have gone up a lot, so if you have not bought in a while expect sticker shock!