What makes the Hubbell CS50EXT5 suitable for marine use?

It's built with corrosion-resistant yellow STOW cable, 105°C rated for heat, and watertight pin-and-sleeve connectors. UL-listed and ABYC-compliant, it handles saltwater, UV, and flexing better than standard cords.

Can I use the CS50EXT5 with boats having isolation transformers?

Yes, its 4-pole, 5-wire 120/208V design pairs perfectly with isolation transformer setups, providing balanced power without neutral issues.

How does the 5-wire configuration differ from 4-wire?

The extra wire supports full neutral and ground for 120/208V three-phase, offering better protection and compatibility for advanced marine electrical systems.

Is this extension cord rated for continuous 100A use?

Absolutely—#2 AWG STOW cable and robust terminations handle full 100A loads without overheating, thanks to factory-controlled manufacturing.

How should I maintain the CS50EXT5 for longevity?

Rinse with fresh water after saltwater exposure, coil loosely, and store dry. Inspect connections seasonally; its materials resist degradation for years of service.

Will this cord work with my existing Hubbell shore power cable?

Designed for it—mates directly with Hubbell 100A cable sets like CS754 or CS100IT5, extending reach without adapters.

What's the cable length and visibility features?

50 feet (15.2m) of high-visibility yellow jacket for safety on deck, with enough reach for most dock configurations.

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home > Hubbell CS50EXT5 100A 50' 5 Wire 120/208V Extension Cord > Hubbell CS50EXT5 100A 50' 5 Wire 120/208V Extension Cord

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Hubbell CS50EXT5 100A 50' 5 Wire 120/208V Extension CordWhy the Hubbell CS50EXT5 Stands Out for Marine Shore Power Boat owners know the frustration of reaching a dock only to find your shore power cable falls short. Enter the Hubbell CS50EXT5a rugged 50 foot extension cord engineered specifically for high demand marine environments. This 100A, 120 208V powerhouse uses 4 pole, 5 wire STOW cable in 2 AWG thickness, rated for 105C operation. Its bright yellow jacket isn't just for visibility; it's a corrosion

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Why the Hubbell CS50EXT5 Stands Out for Marine Shore Power

Boat owners know the frustration of reaching a dock only to find your shore power cable falls short. Enter the Hubbell CS50EXT5—a rugged 50-foot extension cord engineered specifically for high-demand marine environments. This 100A, 120/208V powerhouse uses 4-pole, 5-wire STOW cable in 2 AWG thickness, rated for 105°C operation. Its bright yellow jacket isn't just for visibility; it's a corrosion-resistant shield built to withstand saltwater spray, UV exposure, and constant flexing from tidal movements.

Unlike generic cords that overheat or fail under load, this extension mates seamlessly with your existing Hubbell shore power setup, delivering full 100A capacity without voltage drop. Picture docking your yacht at a busy marina: no more repositioning or risky adapters. It's factory-assembled for flawless terminations, UL-listed, and ABYC-compliant, ensuring every connection is as reliable as the day it's made.

Real-World Benefits for Serious Boaters

Unmatched Durability: Specially compounded STOW cable resists oil, abrasion, and chemicals common in marinas. High-visibility yellow makes it easy to spot on deck, reducing trip hazards.
Full-Power Performance: Handles 100A continuously, perfect for running air conditioning, heavy appliances, or multiple circuits on larger vessels. The 5-wire design supports balanced 120/208V three-phase power, ideal for boats with isolation transformers.
Quality You Can Trust: Each unit undergoes 100% inspection and testing. Hubbell pioneered 100A pin-and-sleeve standards alongside the National Electric Code and ABYC—no compromises on safety or compliance.
Versatile Extension: At 50 feet, it bridges the gap from pedestal to boat without excess length that tangles or drags. Pairs perfectly with Hubbell's 75- or 100-foot main cables for total flexibility.
Easy Handling: Lightweight yet stout construction means one person can deploy it quickly, even in rough conditions.

I've seen lesser cords melt under summer loads or crack after one season—the CS50EXT5 laughs that off, thanks to its superior materials and construction.

Pro Tips for Maximizing Your CS50EXT5

Coil it loosely after use to prevent kinks—store on a ventilated reel away from direct sun. Before connecting, inspect pins for corrosion (a quick wipe with a marine contact cleaner works wonders). Always match your boat's power config: this 5-wire model shines for 120/208V systems with neutral, avoiding ground faults that plague mismatched setups.

For multi-boat slips or floating docks, its length hits the sweet spot. And remember, proper strain relief at both ends prevents wiggling connections that lead to arcing—Hubbell's watertight seals handle the rest.

Safety first: Never exceed 100A draw, and use GFCI-protected pedestals. This cord's design minimizes resistance, keeping connections cool even on hot days.

Technical Edge That Sets It Apart

Hubbell doesn't cut corners. The #2 AWG conductors ensure minimal voltage drop over 50 feet, maintaining power quality for sensitive electronics. 105°C rating means it outperforms standard 90°C cords in engine rooms or tight bilge runs. Corrosion-resistant contacts stay bright, reducing resistance buildup over time.

Compared to 4-wire options (like the CS50EXT4 sibling), the extra ground/neutral wire provides superior fault protection for modern vessels—essential if you're upgrading from older 50A systems.

Frequently Asked Questions

50' yellow, corrosion resistant extension cord, 105°; C rated, 2 AWG, 4 pole 5 wire STOW cable. For mating with existing shore power cable set.

Hubbell Marine was the first to offer 100 amp marine grade devices that are considered second to none.

Hubbell developed the standard for 100 amp Pin and Sleeve devices with the National Electric Code and the American Boat and Yacht Council.

Only Hubbell offers 3, 4 and 5 wire 100 amp cable sets for your shore power requirements.

Cable sets manufactured in factory controlled conditions using specially compounded cable to accommodate a full 100 amp.

Features and Benefits.

Factory assembled. Reliable and consistent terminations.
100 Amp pin and Rugged, watertight, sleeve devices. UL listed, AB02029 YC compliant, corrosion resistant.
UL Listed cable. High visibility yellow, STOW cable, 105° C rated, and UL listed.
Breadth of line. Available in 75, 100, and 125 ft. lengths with and without a neutral.
Fifty foot extension cords also available.
100% inspection. Each cable set is tested to ensure quality performance.

CS75IT4
Yellow 75 ft. (22.8m) corrosion resistant shore power cable set, 105° C rated, #2 AWG, 2 pole 3 wire (no neutral), STOW cable with 3 pole 4 wire, 100A 125/250V plug and connector body for use with boats with isolation transformer on board.

CS100IT4
Same as CS75IT4 except 100 ft. (30.4m) in length.

CS754
Yellow 75 ft. (22.8m) corrosion resistant shore power cable set, 105° C rated, #2 AWG, 3 pole 4 wire STOW cable.

CS1004
Same as CS754 except 100 ft. (30.4m) in length.

CS50EXT4
Yellow 50 ft. (15.2m) corrosion resistant extension cord, 105° C rated, #2 AWG, 3 pole 4 wire STOW cable. For mating with existing shore power cable set.

CS75IT5
Yellow 75 ft. (22.8m) corrosion resistant shore power cable set, 105° C rated, #2 AWG, 3 pole 4 wire (no neutral), STOW cable with 4 pole 5 wire, 100A 120/208V plug and connector body for use with boats with isolation transformer on board.

CS100IT5
Same as CS75IT5 except 100 ft. (30.4m) in length.

CS50EXT5
Yellow 50 ft. (15.2m) corrosion resistant extension cord, 105° C rated, #2 AWG, 4 pole 5 wire STOW cable. For mating with existing shore power cable set.

Note: These cables are built to order and ship via common carrier truck lines. Please allow 3-4 weeks delivery.

SKU: NVN-1002589
MPN: CS50EXT5
UPC: 783585502700

Hubbell CS50EXT5 100A 50' 5 Wire 120/208V Extension Cord

Name: Hubbell CS50EXT5 100A 50' 5 Wire 120/208V Extension Cord
Brand: www.midwoodautocraft.com
SKU: 12430859276
Price: 2269.99 USD
Availability: InStock
Rating: 4.5157 (351 reviews)