Originally Posted by Swoop
MsNomer, I know that you decided how to anchor your inverter long ago, but for anyone else asking the question . . . here is what I did. My 2000W inverter is just long enough to sit on top of the the ~3/16" horizontal rods at the front and back of the seat base. I made a couple of clamp plates (see picture) to secure it from the bottom. The fact that it is off the floor should help with cooling and cleanliness. It seems sturdy and it was a reasonably quick attachment method.
I discovered when I opened the box that my CNBOU inverter came with cables that appear to be under-sized for a 2000W inverter. Each cable is comprised of two small (6 AWG?) cables (so, roughly equivalent to a single 3 AWG cable). From what I have read each red wire should really be fused separately, but they are not. (Hopefully, this is not an indication of low-quality parts or poor design inside the inverter . . . we'll see . . . .) I'm half-way through the installation, but I'm going to stop and get some heavier-gauge cables and a fuse. I've been going in circles for hours looking at various sources online, but I think I have settled on 1/0 cable 24" long with a 325A fuse. That should keep the voltage drop to ~2% or less.
The inverter should have a max current of about (2000 watts)/(12 volts)(0.9 efficiency) = 185 amps.
BlueSea has a nice calculator for estimating the wire size: http://circuitwizard.bluesea.com/
Putting in 185 amps, 4 ft total wire length, 2% voltage drop, and 90C insulation on the wire, the calculator comes up with 0 AWG.
In the "Explain Results", it says the 4 AWG would be OK for the voltage drop, but 0 AWG is required for ampacity (wire overheating).
So, the 1/0 wire should be fine if you go that way.
Lowes is an easy local source for this kind of wire -- they sell it off spools and cut it to the length you want -- the price per ft is high, but you only end up buying as much as you need. Its stranded, but still hard to bend in these heavy wire gages. Some people like to use welding cable as the finer strands make it easier to bend.
The positive side wire that goes to the battery should have a fuse that is located as close to the battery as possible.