HMWPE Cathodic Protection Wire – UL List

Cathodic protection wire is a stranded copper conductor insulated with a black high molecular weight polyethylene (HMWPE) compound that provides excellent abrasion, crush, chemical, oil and moisture resistance. Designed for use in cathodic systems to protect against galvanic and electrolytic corrosion of underground or submerged metallic objects. These cables are designed to provide protection by acting as a DC feeder cable to electrically charged metallic structures. The negative potential applied to these structures offsets the natural effects of electrolysis and corrosion which would otherwise occur. Specifically applied to underground pipelines, dams and lock gates, fresh or salt water steel piles, tanks, condensers, and ship hulls.


  1. ASTM B-1, B-3, B-8, B-33, B-l72,and B-173 for soft drawn annealed copper conductors
  2. ASTM 0-1248, NEMA WC-5, ICEA S-61-402 for High Molecular Weight Polyethylene (HMWPE).
  3. Ul83, Ul1581 and Ul2556.

CONDUCTORS: The single copper conductors shall be solid or stranded annealed or hard uncoated copper per Ul83 and ASTM requirements.

INSULATION: The conductor shall be insulated with black, sunlight resistant polyethylene complying with the physical and electrical properties per ASTM 0-1248, Type I, Class A, Cat 5, and Grades E4E5. Types II, III, and IV are available on request. The insulation shall be concentrically applied and the minimum at any point shall not be less than 90% of the specified average thickness. Rated at 75 Deg C, 600 volts.

IDENTIFICATION: The wire shall be identified by surface marking indicating the manufacturer and AWG size. UL listed products will be identified and surface printed in accordance with the UL requirements.

PACKAGING: Wire can be cut to any length by request.

TESTING: The wire shall be tested in accordance with UL1581 and 2556 to meet the requirements of UL and ASTM standards. All wire will be spark tested at 7500 VAC unless otherwise specified.

#14 7 .110 .29 38 2.624
#12 7 .110 .31 48 1.65
#10 7 .110 .34 62 1.038
#8 7 .110 .37 87 .653
#6 7 .110 .40 122 .411
#4 7 .110 .45 175 .258
#2 7 .110 .51 260 .162

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