Do you have a scrap yard near by?
If so this is where I get almost all my new wire.
Over the last year or 2 I have collected hundreds of feet of 4ga wire, bought for about 1/4 the price of MSRP.
I can see great application for the flir when building new equipment.
Here is my 240VAC powered solar panel in a box. It mimics the output voltage of a "12 volt solar panel" for charging a battery via solar charge controller.
I was running it hard testing to find any deficiencies. Found running the 25 amp bridge rectifier at anything over 12 amps made it get a little hotter than what I would like to see and at the full 25 amps it was really cooking at over 250'F.
Then found the fuse holder was cooking at 330'F at 25 amps.
So I went with different fuse holder, double the existing bridge rectifier and heat sink setup.