SW low amp battery charging/AC/grid [RE-wrenches]

[Bob-O Schultze, Electron Connection]

<x-flowed>Yo Jay,
I see your problem, but it seems like a lot of expense to go to in 
wire and trenching for such a small return. Also, I make it a 10.6V 
or 8.8% wire drop with 5 amps @ 120vac and #4 CU wire. Not good.
If you must do this, run 240vac over from the grid and step on it at 
the inverter with a transformer. That way you could get 10A @ 120vac 
into the inverter at a little under 5% loss. High, but acceptable.
Consider using 4/0,4/0,2/0 AL URD. You'll probably find it to be not 
much more money than three runs of #4 CU USE. Even closer if you're 
thinking #4 THHN and PVC conduit. Jeeez, the 1000' of trench is 
probably the most expense anyway. With the URD, you could get about 
12A at 240vac over there and feel pretty OK about the voltage drop. Mo 
betta. In ANY case, I'd fuse or CB the run at the grid connection, of 
course, and consider a small value fuse at the inverter input to 
limit the current to an acceptable voltage drop level. Better to blow 
a fuse than feed thru way low voltage, no?
Good Luck, Bob-O

>Here is my question.  I have a customer who is 1000' from the grid, they
>already have a SW4048 with batteries no panels, and a genset.  Instead of
>running the propane genset I am planning on running it off the grid with a 5
>amp charge using like #4-6 wire.
>
>Has anyone done this?? I see no problems with just setting the max charge and
>max AC1 input to 5 amps, then the inverter will support this when it exceeds
>the 5 amps, and keep the batteries floated.  Or I can do time of day and set
>that for the night.
>
>Thanks,
>
>jay
>
>Jay Peltz
>Peltz Power

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