Quote Originally Posted by rca987 View Post
One thing i've never figured out, was the difference between #1 and #2 copper. Anyone care to explain? I always get #2 copper at the yard.
#1 Copper - stripped wire strands there are bigger than a number two pencil lead.
#2 Copper - does not meet criteria for #1 Copper. Is free of any alloy such as soldering.
Light Copper - miscellaneous Copper scrap.