Pacer Black 8 AWG Primary Wire - 250 [WUL8BK-250]Black 8 AWG Primary Wire 250' Pacer's marine wire is designed to handle the harshest marine environments. It is manufactured to meet and exceed the most stringent specifications. This 8 AWG marine wire is constructed in the USA to achieve the highest level of quality. Built from Type III class K tinned copper, this wire offers excellent flexibility. The tinned copper also resists corrosion adding to the life of the wire. What about the insulation?