Shore Power for Boats: Reliable Dock-Side Electrical Supply
When your boat is tied up, shore power is your gateway to keeping everything running—battery chargers, air conditioning, galley appliances, electronics and more—without engine noise or drain on your DC system. Choosing components built for marine demands ensures safe, reliable operation in saltwater, wet docks and high-use environments.
What Shore Power Includes & Why Quality Matters
Shore power setups generally include:
- A power pedestal at the dock (commonly 30 A or 50 A in North America).
- A shore power cordset (molded plug, heavy-duty cable, locking ring)
- A matching inlet or receptacle on your boat
- Optional adapters, extension cords, breakers or safety equipment
Because you’re dealing with high currents, AC power, and harsh environments, the quality of components matters. Products built for marine use resist corrosion, seal against moisture, and handle the demands of dockside service.
Top Features to Look For
When selecting shore power gear, check for:
- Correct Ampere Rating & Plug Configuration: Many boats require 30 A or 50 A. Matching plug/inlet style is critical.
- Heavy-Duty Cable Construction: Thick gauge copper, molded ends, watertight seals.
- Locking or Threaded Rings: To prevent accidental disconnection or corrosion at the plug interface.
- Safety Indicators & Ground Fault Protection: Some cordsets have LED indicators or built-in protections.
- Marine-Rated Materials: UV-stable outer jackets, saltwater-resistant contacts, sealed collar systems.
- Compatibility & Certification: Ensure plugs/inlets match your boat and meet marine standards.
When to Upgrade or Replace Shore Power Components
Replace or upgrade if you notice:
- Cable jacket damage, discoloration or softness
- Plug or inlet that is loose, corroded, overheated or difficult to engage
- Your boat’s shore power needs have increased (e.g., moving from 30 A to 50 A)
- You lack safety features like locking rings, LED indicators or better cable construction
Upgrading early prevents electrical faults, reduces risk of shore-side issues and improves reliability when tied up.
Shop High-Quality Shore Power Products
Browse our selection of marine shore power cordsets, inlets, adapters and accessories. Filter by amp rating (30 A vs 50 A), cable length, plug type and gear brand. If you’re unsure what your boat needs, we’re here to help you match the right components.
Frequently Asked Questions About Marine Shore Power
How do I know if my boat needs a 30 A or 50 A shore power cordset?
Check your boat’s existing inlet or cordset plug—most 30 A use NEMA L5-30 whereas 50 A use SS2 or equivalent. Also review your electrical panel and loads: higher draw boats often upgrade to 50 A for more capacity.
What happens if I use a generic extension cord or adapter not rated for marine use?
Using non-marine rated gear risks corrosion, overheating, poor connection, water intrusion and possibly electrical fault or fire. Marine-specific products are built to handle those conditions.
Can I install my own shore power inlet or cordset?
If you’re comfortable with marine wiring, correctly grounding, matching plug ratings and following your boat’s wiring convention, then yes. Otherwise, a qualified marine electrician can ensure safe installation.
Why do shore power cordsets cost so much more than standard extension cords?
Marine-rated cordsets use thicker copper, molded marine plugs, sealing rings, UV/salt-resistant jackets and safety features. The environment demands higher standards—and that cost reflects it.