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Black 18 AWG silicone test lead wire on 50 ft roll

Pomona Electronics

Pomona 6733-0 18 AWG Silicone Test Lead Wire 50 ft Black

SKU CH-8NGB-BKQY0

18 AWG silicone-insulated test lead wire on a 50 ft roll, rated 10,000 V and CAT III per IEC 61010-031, with dual-extruded insulation that reveals a white inner layer when worn

  • TypeBuilding Wire
  • Make custom extra-long test leads
  • 50 ft roll lets you cut any length
  • High flexibility from 65-strand tinned copper
  • Double silicone insulation shows white wear layer
  • Rated 600 V CAT III per IEC 61010-031

What the product is

Pomona 6733-0 is an 18 AWG silicone-insulated test lead wire supplied in a 50 ft roll. It is built for technicians and engineers who assemble custom test leads, jumpers or patch cords for electrical measurement and calibration work.

Installation and common issues

The wire fits Pomona do-it-yourself banana plugs and jacks and accepts standard clips such as Mueller Electric types. High strand count and silicone insulation give excellent flexibility, but terminating the fine 65/36 tinned copper strands cleanly requires suitable crimp tools and careful stripping to avoid stray conductors.

Practical limits of the CAT III 600 V rating

The wire is rated for CAT III use per IEC 61010-031 when correctly terminated, with a maximum voltage of 10 000 V and maximum current of 20 A. Operating temperature range spans -58 °F to 302 °F. It is not intended for fixed building wiring, permanent mains installation or applications that exceed the stated voltage, current or temperature limits.

Highlights

  • Make custom extra-long test leads
  • 50 ft roll lets you cut any length
  • High flexibility from 65-strand tinned copper
  • Double silicone insulation shows white wear layer
  • Rated 600 V CAT III per IEC 61010-031

Specifications

BrandPOMONA
TypeBuilding Wire

Questions about this item

How do I confirm the wire is safe to use after I terminate it with plugs?

After termination, verify the white inner insulation layer is not visible at any point; the dual-extruded silicone shows white only if the outer jacket is damaged, so an intact outer layer means the lead meets CAT III IEC 61010-031 safety requirements.

What comes in the package and what must I supply myself?

The box contains a 50 ft (15.2 m) roll of black 18 AWG silicone-insulated wire with 65×36 tinned copper strands; you must purchase banana plugs, clips or other terminations separately to complete the test leads.

Which version of this wire should I choose for high-temperature automotive work?

This single black 18 AWG variant is rated for -58 °F to 302 °F, 10 000 V maximum and 20 A continuous, so it covers high-temperature automotive testing without needing a different capacity or colour.

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