Marine primary wire is designed specifically to survive the harsh marine environment. Our single conductor boat wiring is fine stranded copper (Type III stranding) with each strand completely tin plated. Tinned copper will resist corrosion and ensure safe and secure operation for many years to come. This marine wire is UL listed as UL1426 and is ABYC and USCG approved with a 105C rating ( BC5-W2). We have many colors and AWG gauge sizes to choose from and all of our wire is Made in the USA.If ordering multiple quantities it will be shipped in one continuous length. (example 2 100ft lengths would be one 200ft lengths) For special request contact us at [email protected]