I have some leftover #4 URD aluminum wire from running electric out to my shop from house. Would this wire work as the wire for grounding to the frame of aluminum trailer for DC and for AC?
I also have some copper 8/3 NM-B leftover from when I built my house 20 years ago. Would that wire work if the aluminum URD doesn't? Just trying to use what I already have to save a few bucks for other fun stuff for the build.
Thanks,
Harry