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Black 50ft DC extension cable with 5.5x2.1mm barrel connectors, 20AWG copper wire

JacobsParts Inc.

JacobsParts Inc. DCEXT-E 50ft 5.5x2.1mm DC Extension Cable

SKU CH-4009-3GP9C

A 50ft 20 AWG copper cable extends 5.5x2.1mm DC power connections up to 3 amps at 5-24V for LED strips, CCTV, cameras and other barrel-connector devices

  • Length50ft.
  • ColorBlack
  • SpecificationsWire: 20 AWG copper
  • Weight0.7
  • Extends power reach by 50 ft / 15.25 m
  • 20 AWG copper wire carries up to 3 A at 5-24 V DC
  • 5 x 2.1 mm barrel male-to-female connectors fit common devices
  • Black 0.7 lb cable suits LED strips, CCTV, cameras, DVRs, drives, audio gear
  • Simple plug-in extension adds length without extra adapters

50ft DC Extension Cable

This 50ft DC power extension cable uses a 5.5mm x 2.1mm barrel connector pair to bridge the gap between a power supply and a device. It is built for users who need to place equipment such as LED strip lights, CCTV cameras, DVRs, or audio gear farther from the mains outlet than the stock lead allows. The 20 AWG copper conductors carry up to 3 amps across a 5-24V DC range. It suits installers and hobbyists running low-voltage power over long indoor runs.

Voltage Drop and Ampacity Limits

At 50 feet, the 20 AWG copper wire introduces measurable resistance that causes voltage to sag under load. The cable is rated for a maximum of 3 amps, so devices drawing near that limit will see a larger drop than lighter loads. Running 24V instead of 5V reduces the percentage loss, but the absolute drop in volts remains the same for a given current. Users must verify that the voltage arriving at the device still meets its minimum operating threshold, otherwise the equipment may malfunction or shut down.

Plug-and-Play Barrel Fit

Installation is a simple male-to-female barrel connection that requires no tools or soldering. The most common issue is a loose or intermittent connection caused by mismatched barrel dimensions; the 5.5mm outer and 2.1mm inner pins must match both the supply and device jacks exactly. Polarity is not marked on the cable, so the installer must confirm centre-positive wiring before powering sensitive gear. Weight is .7 and the jacket is black for discreet routing.

Highlights

  • Extends power reach by 50 ft / 15.25 m
  • 20 AWG copper wire carries up to 3 A at 5-24 V DC
  • 5 x 2.1 mm barrel male-to-female connectors fit common devices
  • Black 0.7 lb cable suits LED strips, CCTV, cameras, DVRs, drives, audio gear
  • Simple plug-in extension adds length without extra adapters

Specifications

Brandjacobsparts
ModelDCEXT-E
Length50ft.
ColorBlack
SpecificationsWire: 20 AWG copper
Weight0.7

Questions about this item

Should I pick a shorter or longer cable for my 5.5x2.1mm device?

The 50ft length adds 15.25 metres of reach; choose it when the power supply must sit far from the device, otherwise a shorter run reduces voltage drop on the 20 AWG copper wire.

What does the 3-amp rating mean once the cable is installed?

It sets the maximum continuous current the 20 AWG copper conductors can carry safely across the full 50ft run at 5-24V DC.

Does the 5.5x2.1mm barrel interface limit the voltage or current I can use?

The male and female 5.5x2.1mm barrels are rated for up to 24V DC and 3 amps, so neither the connector nor the 20 AWG wire will exceed those limits in normal use.

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