Copper cable lugs are designed to make safe, low-resistance electrical connections, but when the time comes to reuse them after being removed, industrial best practice is unequivocal: copper cable lugs are usually single-use only. When a copper cable lug is crimped onto a cable, the metal will deform to grip the conductor tightly. Taking away the lug usually deforms its structure so t... https://www.pioneerpowers.com/copper-cable-lugs.php