Bonding wire maintenance

Bonding wire maintenance is crucial for the longevity and performance of your vessel. Bonding wires connect all metal components in your boat, preventing corrosion and ensuring proper electrical grounding. Regular maintenance of these wires can extend the life of your vessel’s bonding system.

Regular bonding wire maintenance checks

Inspect the bonding wires in your bilge from time to time. If you notice any corrosion or patina build-up, a quick brush with a stainless steel or bronze brush (about the size of a toothbrush) can help remove it. This simple step can significantly extend the life of your bonding system.

Understanding the role of bonding wires

Bonding wires are connected to the anodes (zincs) on the outside of your vessel. These anodes act as sacrificial metals designed to corrode, protecting essential metals on your boat, such as skin fittings, thru-hull valves, struts, and rudders. This protection ensures these components can continue to function effectively in a saltwater environment.

Standards for bonding wire replacement

If you need to replace or repair bonding wires or connections, adhere to the following yacht standards:

  1. Material: Use oil-resistant, insulated, tinned stranded copper wire, or uninsulated copper strip. Avoid using copper braid or copper tubing.
  2. Submerged Applications: For submerged applications, such as outboard motors or outdrives, use manufacturer-approved corrosion-resistant materials like stainless steel cable.
  3. Wire Size: Ensure the wire used is at least #8 AWG.
  4. Fasteners: Do not use self-tapping fasteners for connections.
  5. Connection Cleanliness: Keep all connections clean and free of corrosion.
  6. Colour Coding: Bonding wires are typically green and/or green with a yellow stripe.


For more information, speak to an accredited marine surveyor like Aquamarine Services.

Conclusion

Regular bonding wire maintenance is vital for the health of your vessel. By conducting periodic inspections and adhering to recommended standards for replacement, you can ensure your bonding system remains effective. Proper maintenance not only protects your boat’s metal components but also contributes to the overall safety and performance of your vessel.

Maintaining your vessel’s bonding system is a straightforward yet essential task. Stay vigilant and proactive in your maintenance efforts to enjoy a safer and more durable boating experience.

Contact our friendly and professional team for advice. 

Share this article

Subscribe To Our Newsletter

More to Explore

Caring for Gelcoat
Tips & Advice

Caring for Gelcoat: Club Marine Article

Aquamarine Services Director, Scott Cumming, regularly writes for Club Marine Magazine. This latest article covers caring for gelcoat. Fresh gelcoat on a fibreglass boat not

Book or Contact Us Today