Is THWN a copper?
Is THWN a copper? Construction. Type THHN or THWN or MTW are copper conductors that are soft annealed copper, insulated with a tough, heat and moisture resistant, lead-free polyvinyl chloride (PVC) over which a nylon (polyamide) or UL listed equivalent jacket is applied. What is THWN copper wire? What is THWN Cable. THWN is a […]