Description

Key Features

50 Feet of Reach

The extra length helps you get power where you need it without moving generators, tools, or equipment closer to the work area.

Heavy-Duty Extension Cord

This 10/3 SJTW extension cord uses a 300-volt vinyl jacket built for indoor and outdoor use, so it holds up better in rougher jobsite conditions than lighter household cords.

Lighted Receptacle

The clear illuminated receptacle shows when power is live at the end of the cord, which saves time when you’re checking connections in a dim garage, basement, or outdoor setup.

Overview

The Voltec 50 Ft. 10/3 SJTW UG Extension Cord YL/BK, Model 05-00350, is a heavy-duty power extension cord built for users who need dependable reach and better durability than a light household cord can offer. This is a 10/3 extension cord designed for delivering power to tools, equipment, and jobsite accessories indoors or outdoors. With a 50-foot length, 125-volt rating, 15-amp capacity, and 1,875-watt maximum load, it is aimed at contractors, maintenance crews, and serious DIY users who need a cord that can handle regular work instead of occasional garage duty.

What matters here is the balance of reach, wire size, and durability. A 50-foot cord gives you useful working distance without being so long that it becomes a hassle to move around the site. The 10/3 construction makes this a more substantial cord for heavier-duty use, and the SJTW jacket is rated for indoor and outdoor conditions. In plain terms, that means it is built to deal with weather, abrasion, and the kind of dragging, coiling, and repositioning that happens on real jobs.

Voltec uses a heavy-duty 300-volt vinyl jacket on this cord, which is one of the details that actually matters in use. The jacket protects the conductors from wear and helps the cord hold up when it is run across concrete, dirt, shop floors, or outdoor work areas. The yellow and black color scheme also makes it easier to spot on the ground, which is useful when you’re working around materials, ladders, and other cords and want to avoid a trip hazard or accidental unplugging.

One of the most practical features on this Voltec extension cord is the clear lighted receptacle. When the end of the cord is energized, the receptacle lights up to show power is present. That saves you from tracing a line back to the source when a tool will not start, and it helps you confirm at a glance that the cord is live before you plug in a saw, charger, fan, or light. It is a simple feature, but on the job it cuts down on guesswork.

The connection style is straightforward and useful: NEMA 5-15P on the plug end and NEMA 5-15R on the receptacle end. That means this cord is built around standard 125-volt, 15-amp plug compatibility, so it works with a wide range of common portable tools, chargers, jobsite lighting, and shop equipment that use a standard household-style plug. It is UL Listed as well, which gives buyers a clear safety and compliance benchmark.

At 12 pounds, this is not a throwaway cord, and that is the point. The extra weight comes with a heavier-duty build that is better suited to repeated use and more demanding conditions. If you are powering small household electronics, this is more cord than you need. If you are running tools, setting up temporary power outdoors, or need a tougher cord for regular use, this Voltec extension cord makes more sense because it is built for that workload.

The best fit for this cord is anyone who needs a reliable 50-foot outdoor extension cord for jobsite power, garage work, workshop tasks, or general contractor use. It is especially useful for users who want visible power indication at the receptacle, need indoor and outdoor flexibility, and prefer a heavier jacketed cord that is less likely to get chewed up by normal use.

Power Where You Need It

This cord is built for the simple problem every shop and jobsite runs into: the outlet is never exactly where the work is. The 50-foot length gives you room to set up tools, lighting, and equipment without constantly relocating your power source.

• 10/3 SJTW cord construction for heavier-duty power delivery
• Rated for 125 volts, 15 amps, and up to 1,875 watts
• Indoor and outdoor rated for more flexible use
• Clear lighted receptacle shows when the cord end is live

Key Specifications

Cord Type	10/3 SJTW
Length	50 ft
Voltage	125 V
Current Rating	15 A
Wattage	1,875 W
Jacket Material	Vinyl
Color	Yellow / Black
Weight	12 lbs

Compatibility

Plug Configuration

Uses a NEMA 5-15P plug and NEMA 5-15R receptacle for standard 125-volt, 15-amp connections.

Tool and Equipment Use

Suitable for portable tools, chargers, jobsite lights, and other equipment that use a standard 125-volt grounded plug within the cord’s 15-amp and 1,875-watt rating.

Built For

Construction General Contracting Maintenance Work Garage and Shop Use Indoor Power Distribution Outdoor Power Distribution DIY / Hobbyist

Warranty & Support

Lifetime warranty against manufacturer’s defects.

Tool Nut’s Take

Tool Nut’s Take

Voltec 50 Ft. 10/3 SJTW UG Extension Cord YL/BK Gets the Basics Right

This is the kind of extension cord you buy when you’re tired of babying cheap cords and just want one that handles regular work without drama.

• Who it’s for: Contractors, maintenance crews, and homeowners who need a 50-foot heavy-duty extension cord for tools, lighting, and outdoor work.
• Why it stands out: The 10/3 build, indoor/outdoor SJTW jacket, and lighted receptacle make it more practical than a basic utility cord.
• Worth knowing: At 12 pounds, it is not a featherweight cord, but that extra heft comes with a tougher build and better jobsite durability.

Common Questions

• Is this cord rated for outdoor use? Yes. It is rated for indoor and outdoor use.
• What is the maximum electrical rating? This extension cord is rated for 125 volts, 15 amps, and 1,875 watts.
• Does the receptacle show when power is live? Yes. The receptacle is clear and lighted to indicate that power is being supplied to the end of the cord.
• Is this cord safety listed? Yes. It is UL Listed.