3 Conductor 12 Gauge Marine Cable 100ft Spool Email 3 Conductor 12 Gauge Marine Cable Part #: W-12GA-3COND Quantity Price ea. 1 + $160.39 160.39 Back to: Marine Cable Ask a question about this product 3 Conductor 12 Gauge Marine Cable 10ft. Increments 3 Conductor 10 Gauge Marine Cable 10ft. Increments Description 100ft. Of 12 AWG 3 Conductor Marine Grade Boat Cable. Meets UL 1426 and BC-5W2. Rated for up to 600 volts. Temperature rating of 105°C.