Seachoice 63028 Tinned Copper Marine Wire, 4 AWG, Black, 100'
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Seachoice 63028 tinned copper marine wire (4 AWG), black, 100' roll—built for corrosion-resistant, flexible wiring in harsh marine environments.
Key Features
- Long-lasting and rugged—exceeds UL 1426, ABYC and USCG standards
- Premium vinyl insulation rated for 600 volts and temperatures of 105°C dry / 75°C wet
- Ultra-flexible Type 3 tinned copper stranding helps resist corrosion and electrolysis while standing up to vibration and repeated flexing
- Stays flexible in extreme cold down to -40°F / -40°C
- Resists salt water and common contaminants including battery acid, oil, gasoline, heat, abrasion, and UV radiation
Product Compatibility
- Marine DC power and battery wiring
- General marine electrical wiring where tinned copper corrosion resistance is preferred
- Bilge/engine-adjacent wiring and other vibration-prone cable runs
Product Details
- Wire type: Tinned copper marine wire
- Size: 4 AWG
- Color: Black
- Length: 100'
- Seachoice part/SKU: 63028
- Variant SKU: 50-63028
- Insulation rating: 600 volts
- Temperature rating: 105°C dry / 75°C wet
- Conductor construction: Ultra-flexible (Type 3) tinned copper stranding
- Standards/ratings called out: UL 1426, ABYC, USCG
Parts Desk Insights
Best Use Case: Choose this wire for tinned-copper marine wiring runs where corrosion resistance and flexibility matter—especially in battery and other vibration-prone areas.
Common Issues: If you’re not getting a solid crimp or connection, re-check that the terminal/heat-shrink is matched to 4 AWG and that the conductor is fully prepped for clean contact (especially important with insulated/bonded terminals and soldered joints). Route with strain relief to reduce repeated flexing at the connection point.
Related Products & Accessories
Browse related Wire, Cable & Connectors to complete the installation.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.