SPEC 43624 600V CU EPR TRIADS CPE STOS Instrumentation

Type TC-ER Instrumentation Cable 600 Volt Tinned Copper Conductors EPR Insulated Singles Shielded Triads with Overall Shield STOS. CPE Jacket Heat, Moisture, Oil and Sunlight Resistant. Rated for -30°C to 90°C

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Southwire’s Instrumentation Cables Type TC-ER per UL 1277 are suitable for installations as outlined in NEC Article 336 for process control and instrumentation, control circuits for operation and interconnection of protective and signaling devices and for general use in manufacturing, industrial and commercial distribution systems. Cables are constructed with 7-strand tinned copper conductors insulated with Ethylene Propylene Rubber EPR. The triad conductors are colored black, white, red and alpha-numeric printed. Each pair has an aluminum polyester foil with 100% coverage and a tinned drain wire. The overall assembly is covered with an aluminum polyester foil with 100% coverage and a tinned drain wire. The cable is suited for use in cable trays, raceways, conduit, aerial (when supported with a messenger) and direct burial. The cable is rated for -30°C to 90°C wet or dry and rated for Class I Div II hazardous locations, sun and oil resistant. The jacket is black Chlorinated Polyeth- ylene CPE with a rip cord for easy removal


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Standards & References

  • ASTM B33: Standard Specification for Tin-Coated Soft or Annealed Copper Wire
  • UL 44: Thermoset-Insulated Wires and Cables
  • UL 1277: Electrical Power and Control Tray Cables
  • UL 1685: Vertical-Tray Fire Propagation and Smoke Release Test (1/0 and Larger)
  • ICEA S-73-532: Standard for Control, Thermocouple Extension and Instrumentation Cables
  • IEEE 1202: FT4 Flame Test (70,000) BTU/hr Vertical Tray Test
  • EPA 40 CFR, Part 26, Subpart C: heavy metals per Table 1, TCLP method


  • Conductor: Class B stranded tinned copper per ASTM B3 and B33
  • Insulation: Flame-retardant Ethylene Propylene Rubber EPR Black/White/Red alpha-numeric print alternate and inverted. 1-ONE, 2-TWO.
  • Drain Wire: Tinned copper
  • Twisted Shielded Triads: 100% coverage aluminum/polyester foil shield with an individual drain wire shown in step 3
  • Binder: Mylar binder
  • Overall Drain Wire: Tinned Copper
  • Overall Shielded: 100% coverage aluminum/polyester foil shield with a drain wire as shown in step 6
  • Rip Cord: Rip cord under jacket for ease of removal
  • Jacket: Black sunlight, oil and moisture resistant thermoplastic Chlorinated Polyethylene CPE jacket


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