Hubbell HBL61CM53 50A 125V 50' Marine Shore Power Cordset - Extended Reach Single-Phase Power Solution
Dedicated 50A Single-Phase Power for Mid-Size Vessels
Power your mid-size recreational vessel with this purpose-built 50A 125V shore power cordset. Engineered specifically for boats requiring high-amperage single-phase power, this 50-foot cordset delivers reliable 6,250 watts of clean 120V power for comprehensive electrical systems without the complexity of split-phase configurations.
⚡ Pure 50A 125V Power
Dedicated single-phase 125V service optimized for boats without 240V appliance requirements
? Extended 50-Foot Reach
Extended length accommodates challenging slip configurations and distant power pedestals
? Simplified Connection
2-pole 3-wire design eliminates confusion and ensures proper single-phase connections
50A 125V Single-Phase System Advantages
This cordset is designed specifically for marine electrical systems that operate exclusively on 125V single-phase power, offering distinct benefits:
? Simplified Electrical Design
Perfect for boats with straightforward electrical systems that don't require 240V appliances. Eliminates the complexity and potential wiring errors associated with split-phase systems.
? Optimal for Standard Marine Loads
Ideal for boats with standard 120V equipment including lighting, outlets, electronics, refrigeration, and moderate air conditioning systems up to 6,250 watts total.
? Universal 125V Compatibility
Ensures compatibility with marinas that provide dedicated 50A 125V service, preventing connection issues and electrical mismatches common with split-phase adapters.
⚖️ Cost-Effective Solution
More economical than 125/250V systems for vessels that don't require 240V capability, both in initial cost and ongoing maintenance requirements.
Single-Phase Power Specifications
Electrical Configuration
Construction Details
2-Pole 3-Wire Configuration
This cordset uses a simplified wiring configuration optimized for single-phase 125V applications:
Wire Configuration Details
Hot (Line)
Color: Black
Function: 125V power conductor
Rating: 50A maximum
Neutral
Color: White
Function: Current return path
Rating: 50A maximum
Equipment Ground
Color: Green
Function: Safety grounding conductor
Purpose: Electrical fault protection
Single-Phase Power Distribution
In this configuration, all 125V loads connect between the hot (L1) and neutral (N) conductors, with the equipment grounding conductor (G) providing safety protection. This simple configuration eliminates the potential for wiring errors common in split-phase systems.
Ideal Vessel Applications
This 50A 125V cordset is specifically designed for vessels that operate efficiently on single-phase power:
⛵ 40-50 Foot Cruising Sailboats
- Comprehensive lighting and electronics systems
- Refrigeration and galley appliances (120V only)
- Moderate air conditioning (up to ~5 tons total)
- Battery charging and inverter systems
- Watermaker and marine sanitation devices
? Mid-Size Motor Yachts
- Guest cabin amenities and lighting
- Electronics and navigation systems
- Galley appliances without electric stoves
- Fresh water pumps and pressure systems
- Engine room equipment and ventilation
? Sport Fishing Boats
- Electronics packages (fishfinders, GPS, radar)
- Outrigger and electric fishing equipment
- Refrigeration for catch storage
- Cabin comfort systems
- Wash-down pumps and deck equipment
?️ Trawlers and Displacement Cruisers
- Long-range cruising electrical systems
- Efficient LED lighting throughout
- Communication and safety equipment
- Moderate HVAC systems
- Workbench and maintenance equipment
50A 125V Power Capacity Analysis
Available Power: 6,250 Watts at 125V
This cordset can support substantial electrical loads while maintaining voltage stability over the 50-foot length:
Typical Load Distribution Example
Load Management Considerations
- Demand Diversity: Not all equipment operates simultaneously, allowing for higher installed capacity
- Load Shedding: Automatic systems can prioritize critical loads during peak demand
- Voltage Monitoring: Important to maintain proper voltage levels for sensitive electronics
- Circuit Protection: Proper branch circuit protection prevents overloads
Marina Power Pedestal Compatibility
Understanding marina power configurations ensures proper connections and safe operation:
✅ Compatible: 50A 125V Pedestals
This cordset is designed for marinas providing dedicated 50A 125V service. The NEMA L5-50 style connector ensures proper connection to appropriately configured pedestals.
- Direct connection with no adapters required
- Proper voltage and current matching
- Eliminates potential wiring errors
- Optimal power transfer efficiency
⚠️ Incompatible: 50A 125/250V Pedestals
This cordset cannot connect directly to 50A 125/250V pedestals due to different plug configurations. This incompatibility is intentional for safety:
- Prevents dangerous voltage mismatches
- Protects equipment from improper wiring
- Requires proper adapters if connection needed
- Maintains electrical code compliance
When Adapters Are Required
If your marina only provides 50A 125/250V pedestals, you'll need a proper marine-grade adapter to safely connect this cordset. Always use UL-listed marine adapters and verify proper wiring before connection.
Installation & Connection Best Practices
Proper Connection Sequence
-
Pre-Connection Inspection
- Verify cordset condition and connector integrity
- Check marina pedestal for proper 50A 125V configuration
- Ensure all vessel electrical loads are OFF
-
Vessel Connection First
- Connect cordset to vessel inlet first
- Twist-lock connector clockwise until secure
- Verify metallic sealing ring creates watertight seal
-
Shore Connection
- Route cable safely to avoid trip hazards
- Connect to shore power pedestal
- Lock connector securely in place
-
Power-Up Procedure
- Turn ON shore power breaker at pedestal
- Turn ON vessel main breaker
- Test ELCI/GFCI function if equipped
- Gradually energize individual circuits
Maintenance & Service Life Optimization
Regular Maintenance Schedule
Before Each Use
- Visual inspection of entire cable length for damage
- Check connectors for corrosion or overheating signs
- Verify twist-lock mechanisms operate smoothly
- Clean connector contacts if necessary
Monthly (Active Use)
- Thorough cleaning of connectors with marine electrical cleaner
- Inspect cable jacket for cuts, abrasion, or UV damage
- Test electrical continuity with multimeter
- Check for proper strain relief at both ends
Seasonal
- Professional electrical testing including insulation resistance
- Detailed inspection of internal wire conditions
- Connector disassembly and cleaning if needed
- Replace any worn or damaged components
Proper Storage Practices
- Coiling: Use large-diameter loops to prevent conductor stress
- Environment: Store in dry, ventilated areas away from chemicals
- Protection: Cover connectors to prevent corrosion during storage
- Position: Avoid crushing weight or sharp contact points
Frequently Asked Questions
Why choose 50A 125V over 50A 125/250V?
Can I connect this to a 50A 125/250V pedestal?
What size boat is this cordset appropriate for?
How does the 50-foot length affect power delivery?
What does IP56 rating mean for marine use?
Do I need special electrical panels for this cordset?
Cost-Effective Marine Power Solution
Economic Benefits of Single-Phase Systems
? Lower Initial Cost
50A 125V systems cost less than equivalent 125/250V systems in both equipment and installation
? Simplified Installation
Fewer wires and simpler connections reduce installation time and potential errors
?️ Reduced Maintenance
Simpler systems require less maintenance and troubleshooting over their service life
⚡ Energy Efficiency
Single-phase systems can be more efficient for vessels without large 240V loads
Long-Term Value Proposition
For vessels with appropriate electrical loads, this 50A 125V system provides excellent long-term value through reliable operation, lower maintenance requirements, and compatibility with a wide range of marina facilities offering dedicated single-phase service.
Marine Electrical Standards Compliance
System Design Recommendation
Professional Consultation: For optimal performance and safety, consult with qualified marine electricians familiar with single-phase vs. split-phase system design. Proper load analysis ensures this cordset meets your vessel's specific power requirements.
Hubbell Marine Excellence: With over a century of electrical innovation, Hubbell continues to provide marine professionals and serious recreational boaters with reliable, safe, and cost-effective shore power solutions. This 50A 125V cordset exemplifies Hubbell's commitment to marine electrical safety and performance.