Ancor Round Instrument Cable - 20/3 AWG - Red/Black/Bare - 500'

The Ancor Round Instrument Cable – 20/3 AWG in Red/Black/Bare is a 500-foot marine-grade wiring solution designed for gauges, instruments, and low-voltage electrical systems on vessels of all sizes. Built to exceed UL 1426, ABYC, and US Coast Guard Charter boat standards (CFR Title 46), this cable delivers the reliability that offshore anglers and weekend boaters depend on when running navigation, fuel level, temperature, and amp-hour monitoring systems.

The 20/3 AWG three-conductor configuration supports dual-function and single-function instruments with full redundancy. Premium vinyl insulation is rated 600V at 105°C dry and 75°C wet, maintaining flexibility in extreme cold down to –40°F while resisting saltwater corrosion, battery acid, fuel, oil, heat, abrasion, and UV exposure. The bare copper conductor reduces resistance and ensures clean grounds in damp engine compartments. At 500 feet, this bulk spool eliminates mid-season repair delays and provides sufficient length for larger vessels, distributed systems, or inventory stock.

Serious boaters running custom gauge packages, upgrading aging wiring, or retrofitting aftermarket electronics choose Ancor cable for its proven longevity in salt-spray and engine-room environments. This cable is ideal for those who prioritize Coast Guard compliance, avoid midseason electrical failures, and expect wiring to outlast the boat. The generous bulk length accommodates retrofit routing, future expansion, and emergency repairs without additional orders. Weekend fishermen upgrading basic instrument clusters to full monitoring systems also benefit from the cable's standardized marine rating and compatibility with OEM and aftermarket marine instruments.