Cable Clamps

What Are Marine Cable Clamps and Why Do They Matter?

Cable clamps are among the most unassuming yet essential components in any boat or RV electrical system. Their job is straightforward: hold wiring securely in place, preventing cables from chafing against surfaces, vibrating loose, or interfering with other onboard equipment. In a marine or RV environment, poorly managed wiring isn't just an inconvenience — it can be a genuine safety hazard. Vibration, moisture, UV exposure, and the constant flexing that comes with life underway all conspire to degrade unsecured cables over time.

The American Boat and Yacht Council (ABYC) recommends that conductors be supported throughout their length or secured at least every 18 inches. That makes selecting the right cable clamp not just a matter of tidiness, but of meeting recognized safety standards. Whether you're routing a chartplotter power lead through a bulkhead, running sensor cables on an RV roof, or tidying up an engine compartment wiring harness, the right clamp protects your investment and keeps your electrical system reliable.

What to Look for When Shopping Cable Clamps

• Material: Nylon clamps are lightweight, corrosion-proof, and resist oils, acids, and fuel — ideal for most marine interiors. Stainless steel options offer additional strength for exterior or high-vibration mounting points.
• Size: Match the clamp's inner diameter to the cable bundle you're securing. Many brands offer assorted kits covering a range of common wire gauges.
• Waterproofing: For cables penetrating a deck, hull, or bulkhead, look for clamps and seals with IP-rated waterproofing to prevent ingress.
• UV Resistance: Any clamp used on deck or an RV exterior should be UV-stabilized to prevent brittleness over time.
• ABYC Compliance: Choose products explicitly rated to meet ABYC and NMMA standards to ensure your installation passes survey and insurance requirements.

Top Brands in Marine & RV Cable Clamps

Perko is one of the most recognized names in marine hardware, offering both plastic and stainless steel cable clamps suited for interior and exterior boat applications. Their clamps are designed to withstand harsh marine environments, making them a go-to choice for boaters who need dependable, corrosion-resistant hardware.

Scanstrut takes cable management to the next level with their signature "Cable Clam" deck seal systems. Engineered for watertight cable penetrations, Scanstrut's products carry IP-rated certifications and are built from impact-resistant materials — eliminating the need for messy sealants while delivering a clean, professional finish. They are widely regarded as a global leader in marine cable seal technology.

Sea-Dog Line is a trusted marine hardware brand known for offering practical, durable solutions for everyday boating needs, including a range of clamps and cable management hardware built to handle the rigors of saltwater use.

Ancor has been the benchmark for marine-grade electrical components for over 40 years. Their extensive cable clamp lineup — from nylon cushion clamps to stainless steel options — is engineered to meet UL, ABYC, NMMA, and USCG standards, making them a natural complement to Ancor's own Marine Grade® wiring systems.

Pacer Performance rounds out the selection with a broad assortment of cable clamps well-suited for both marine and automotive/RV wiring applications, giving builders and installers flexible options across a wide range of project types.