Air conditioning on solar

Almot wrote:

JiminDenver wrote:
The Air conditioner is a Frigidaire unit that uses 446w/ 3.9a @120v. I fired it all up and was noticing that I the solar was no where near the 50a max it is capable of and the battery stayed in float.

Leaving aside the reason to run a 5000 BTU air conditioner at all :), these numbers puzzle me.

This unit alone - sans any other devices - requires 45A@12V, considering losses, and assuming it is already running, no LRC. The solar was anywhere near 50A, so I presume it was 30-40. So you drew net current 5-10A from the battery - this is "net out", i.e. nothing comes IN - and it stayed on Float? How big is your battery bank?

The inverter bank is a Duracell 8-D starting battery. I keep a DVM on it while running the inverter and the voltage never drop.

This is the AC in question. It is the lowest draw window shaker I can find, the none energy start unit take 515w. It cost a extra $100 to save those extra watts hoping to run it off the panels.

I didn't do it to go look at what I can do, I did it to be able to cool the trailer on the rare occasion that we need it at altitude. We could fire up the generator and run the roof air, but that would mean we would have to take it with us. This will do it without the noise and smell.