About this product

The Blue Sea Systems CableCap is a PVC stud insulator for covering a single exposed termination stud on boat electrical equipment. It is made for stud-type connectors on alternators, starters, windlasses, and other high-amperage termination points where an uncovered live post can be a problem in tight electrical spaces.

This CableCap range covers multiple stud and cable sizes, with red and black versions available for installations that use color separation around DC positive and negative circuits. Across the family, the listed cable sizes run from 18 AWG through 4/0 AWG, so the correct variant should be matched to the terminal, cable size, and stud diameter being protected.

Key Features

• Insulates a single stud-type connector on alternators, starters, windlasses, and other high-amperage devices.
• PVC construction gives the cap a practical insulating body for marine DC electrical installations.
• Red and black color options support clear visual separation in electrical lockers, battery compartments, and engine spaces.
• Variant range covers cable sizes from 18 AWG to 4/0 AWG, depending on the selected cap.
• Stud size options include 0.47 to 0.13, 0.70 to 0.30, 0.50, and 1.25 to 0.70, allowing the cap to be matched to the termination point rather than forced onto the wrong hardware.
• Useful for reducing accidental contact with exposed high-current studs in crowded marine electrical areas.