Best Conntek Extension Cords in 2026

Suitable for many applications: 3 cores of extension cord make sure provide up to 1625W power. Ideal for string lights, block heater, household and office appliance and any other device that requires extended use.

Thick & Flexible: The soft cord makes itself more easy to keep on the edges of the furniture. The PVC outer jacket is not only wear-resistant and durable, but also resistant to moisture and sun. It be used in the environment of -50~70℃.（Note: Not soaking the cords in water for a long time)

High quality connector: Reinforces and durable connectors protect the prongs against bending or breakage. Long strain relief design allow the cord to bend at a greater angle without breaking (Passed the repeated test by bending), extending the service life and making it safer to use.

RV Power Cord

50 amp RV plug

Power Supply Cord

Plug and Connector: NEMA 5-15

U.S 3 Prong Lighted End Female

Heavy Duty 600 Volt Outdoor Jacket STW 10/3

Plug (Male): NEMA TT-30P (RV 30 Amps, 125 Volts)

Receptacle (Female): NEMA TT-30R (RV 30 Amps, 125 Volts)

Maximum Wattage: 3,750 Watts

Plug and Connector: NEMA 5-15

U.S 3 Prong Lighted End Female

Jacket: SJTW, Hard-service cord & Outdoor Rated with 10 Gauge wire

ALL PURPOSE EXTENSION CORD for Indoor and Outdoor use. Great for gardening, landscaping, or powering any household appliance.

WATER RESISTANT - Flexible vinyl covering protects cords against moisture, abrasion and sunlight.

REINFORCED BLADES protect prongs from bending or breaking. 10 GAUGE 3-wire grounded, 3 foot, 15 amp, 125 volt, 1875 watt, 5-15P/R, UL Listed. Temperature Range: -40°F to +140°F

PRACTICAL GENERATOR EXTENSION CORD ADAPTER: this generator adapter cord converts a 20-amp receptacle to a standard 15-amp grounded receptacle with one quick twist

HEAVY-DUTY GENERATOR CORD ADAPTER: a jacket keeps out the elements and protects the generator extension cord adapter for durability; the molded connectors are also crafted from impact-resistant material to withstand rugged industrial uses

CONTRACTOR GRADE GENERATOR CORD ADAPTER: this generator extension cord adapter is great for heavy-duty industrial applications such as operating circular saw, heater and table saw

Plug (Male): NEMA 5-20P (20 Amps 125 Volts)

Receptacle: NEMA 5-15/20r (t-blade style receptacle allows for much more versatility)

Max rating: 2, 500 watts

Plug (Plug): NEMA TT-30P (RV 30 Amps, 125 Volts)

Receptacle (Female): NEMA TT-30R (RV 30 Amps, 125 Volts)

Maximum Wattage: 3,750 Watts

NEMA L6-30P 30A Locking Plug

Bare wire/Hard wire

Locking Power Cords

NEMA L14-30

30 Amp 125/250 Volt

Rubber Extension Cord

Plug (Male): NEMA 14-50P, 50-Amps, 125/250-Volts

Receptacle (Female): NEMA SS2-50R, 50-Amps, 125/250-Volts, Locking Style

Maximum Wattage: 12,500 Watts

Plug (Male): NEMA 6-20P (20 Amp 250 Volts)

Connector (Female): 6-15/20R (T-Blade Receptacle Accepts 6-15 and 6-20 Plugs)

Cable: STW 12/3 (Extra-Heavy Duty service, while retaining maximum flexibility)

7-Way Trailer Extension Cord

Wire Gauges: (2)10AWG, (1) 12AWG, (4) 14AWG cables

90 degree elbow-style male plug

Suitable for many applications: 14Gauge 3core extension cable to ensure up to 1875W of power. Ideal for string lights, block heater, household and office appliance and any other device that requires extended use.

Flat Plugs: Designed for tight Spaces such as behind furniture, sofas, bookshelves, tables, TV cabinets, beds or anything close to walls that do not allow you to use standard outlet.

Elbow Plug：The elbow design allows two close sockets to be used simultaneously in the same direction.You can take advantage of all the outlets in your home or office

Plug (Male): NEMA 14-30P (30 Amps 125/250 Volts, 4-Prong Dryer)

Connector (Female): NEMA 14-30R (30 Amps 125/250 Volts, 4-Prong Dryer)

Max Rating: 7,500 Watts, Gauge: 10 AWG

Rubber Extension Cord

NEMA 5-20 Extension Cord

20 Amp 125 Volt

Heavy Duty Adapter Cord

Lighted Connector

Stays Flexible In Extreme Temperatures

STW 6AWG/4C stranded wire Extension cord, support max 50 AMP overload, Max Rate 7500 Watt (125V) / 12500 Watt (250V)

Molded with electroplate copper terminal in order to avoid surface oxidation effectively. Heavy-duty for Dock, 100% copper conductor inside.

Marine Locking 4-prongs SS2-50 Plug with locking ring, 125 Voltage/ 250 Voltage.

This premium 13 Amp Extension Cord is UL Listed and meets OSHA Specifications

Cable is rated for tough weather conditions up to 60° Celcius or 140° Fahrenheit

Rated for 13 Amps or 1,625 Watts

NEMA L6-20 20 Amp 250V

Rubber SJOOW 12/3

20A 250V Locking Extension Cord

Hospital grade power cord

Green dot power cord

Medical grade power cord

Hospital Grade NEMA 5-15P

Green Dot Power Cords

Medical 4 Outlets Power Strip

【RATING】 30A, 125/250V, max wattage 7500 watts, 10 feet, STW NEMA 14-30P male plug and NEMA 14-30R female receptacle, for 4 prong dryer outlet.

【MULTIPLE USE】 NEMA 14-30 plug 30 Amp extension cord is suit for Level 2 EV Charging such as Tesla Model 3, Model S, Model X, Model Y, and 30 Amp 4 prong dryer.

【SAFETY DESIGN】 Both ends of cord are molded plug and designed with grip space to safely and easily plug and unplug connector.

Hospital grade power cord

Green dot, straight and clear

Rating 15-ampere and 125 voltage

Hospital Grade Power Cord

SJTW 16/3

13A 125V

Configuration: NEMA 5-15 (Standard 3 Prong)

Cable: 12/3 (Is rated for tough weather conditions up to 60° Celcius or 140° Fahrenheit)

Power Indicator Light on Receptacle

Hospital grade power cord

Green dot, straight and clear

Rating 10-ampere and 125-voltage