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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

  • Product 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.

How it compares

Measured against everything we stock in Wire, Cable & Wiring Supplies, at today’s prices. Recalculated every night.

Price $27.99
Typical for this category: the median of 1,610 items is $25.99.

Specifications

Product
Brand namePOMONA
Product 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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