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IronBox Electric - Heavy-Duty 5-15P to C13 Power Cord - 3 Prong 15A 125V 14/3 SJT PC Cable - Cord for Computer, Monitor, Subwoofer, Amplifier - Cable for Power Supply - (Yellow 3 Foot)
Iron Box

IronBox Electric

Bottom line: The IronBox Electric: 14-gauge 14/3 SJT conductors, heavier than typical 18-gauge stock PC cords; main trade-off: 3-foot length won't reach outlets far from the desk or rack.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ 14-gauge 14/3 SJT conductors, heavier than typical 18-gauge stock PC cords
  • ✓ Rated 15A at 125V, enough headroom for gaming PSUs and power amplifiers
  • ✓ UL Listed 5-15P to C13 build
  • ✓ C13 end fits the standard C14 inlet on PC PSUs, monitors, amps and subwoofers
  • ✓ Yellow jacket makes it easy to trace in a crowded cable bundle

Cons

  • ✗ 3-foot length won't reach outlets far from the desk or rack
  • ✗ 125V NEMA 5-15P plug is for North American outlets only
  • ✗ C13 end won't fit C20 inlets on high-draw servers or UPS units
  • ✗ Thick 14-gauge jacket is stiffer to route than thin 18-gauge cords

Manufacturer description

The IronBox Electric heavy-duty power cord connects a standard NEMA 5-15P three-prong wall plug to an IEC C13 connector. That C13 end fits the C14 inlet found on most desktop PC power supplies, monitors, subwoofers, amplifiers, projectors and speakers. The cord is 3 feet long, yellow, and rated for 15A at 125V, so it can power North American desktop setups and audio racks. The cable is 14/3 SJT: three 14-gauge conductors inside a thermoplastic jacket. Stock cords that ship with PCs and monitors are usually thinner 18-gauge wire, and the 14-gauge conductors give this one more headroom for…

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SpecPicks Verdict

SpecPicks scored IronBox Electric using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies & cables category. Iron Box's power supplies & cables lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power supplies & cables of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Will this cord fit my desktop PC power supply?

Most likely. Most desktop ATX and older AT power supplies use an IEC C14 inlet, and this cord's C13 connector plugs into it. The other end is a standard 3-prong NEMA 5-15P wall plug.

What is the wire gauge and amperage rating?

It is 14/3 SJT cable, meaning three 14-gauge conductors in a thermoplastic jacket, rated for 15A at 125V.

Can I use it with a subwoofer or amplifier?

Yes, if the device has a C14 inlet. The listing names subwoofers, amplifiers, monitors, TVs, projectors and speakers as compatible devices.

How long is the cord and what color is it?

This version is 3 feet long with a yellow jacket. Check the product listing for other lengths and colors.

Is this power cord UL Listed, and does it have a warranty?

The manufacturer states the cord is UL Listed. Check the product listing for current warranty terms from Iron Box.

Key Features

  • ROBUST CONSTRUCTION, VERSATILE USAGE: Experience the durability of a heavy-duty 5-15P to C13 Power Cord, featuring a 3-prong, 15A, 125V design suitable for computers, monitors, subwoofers, amplifiers, and more. The UL Listed cable ensures reliable power supply.
  • SEAMLESS COMPATIBILITY: This power cord is compatible with a variety of devices, including computers, TVs, projectors, desktops, and speakers. The 5-15P plug to C13 connection provides versatile compatibility, making it an ideal solution for both home and office setups.
  • DURABLE DESIGN FOR LONG-LASTING PERFORMANCE: Invest in a power cord built for longevity. The robust construction ensures durability, providing a reliable and lasting solution for your power needs. Count on this power cord to withstand daily wear and tear.
  • RELIABLE CONNECTIVITY FOR CRITICAL APPLICATIONS: The 3-prong, 15A, 125V power cable ensures a stable and secure connection, crucial for computers, monitors, and amplifiers. The high-quality conductor and SJT cable construction guarantee a reliable power supply.
  • ENHANCED SAFETY FEATURES : This power cord is UL Listed, meeting rigorous industry standards for safety. The built-in features ensure protection against electrical hazards. Invest in peace of mind with a power cord designed with your safety as a top priority.

Full Specifications

BrandIron Box
ColorYellow
Gauge14
Voltage125 volts
Wattage1875 watts
Amperage15 A
Plug TypeType B
Unit Count1 Count
Item Length36 inches
Plug FormatType B
Model NumberIBX-2822
CompatibilityPC
Input Current15 A
Mfr Part NumberIBX-2822
Connector GenderMale-to-Female
Number of Outlets1
Case Material TypePolycarbonate
Number Of Conductors3
Power Cord Prong Count3
Full listing titleIronBox Electric - Heavy-Duty 5-15P to C13 Power Cord - 3 Prong 15A 125V 14/3 SJT PC Cable - Cord for Computer, Monitor, Subwoofer, Amplifier - Cable for Power Supply - (Yellow 3 Foot)

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IronBox Electric - Heavy-Duty 5-15P to C13 Power Cord - 3 Prong 15A 125V 14/3 SJT PC Cable - Cord for Computer, Monitor, Subwoofer, Amplifier - Cable for Power Supply - (Yellow 3 Foot) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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IronBox Electric - Heavy-Duty 5-15P to C13 Power Cord - 3 Prong 15A 125V 14/3 SJT PC Cable - Cord for Computer, Monitor, Subwoofer, Amplifier - Cable for Power Supply - (Yellow 3 Foot)
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