20ft UL-Certified 18AWG DC Extension Cable (2.1mm x 5.5mm) Male-to-Female - Heavy Duty, Black | HDCX20T
Heavy-Duty 20ft DC Power Extension Cable — 18 AWG UL2464 | Part: HDCX20T
When standard cable lengths fall short, the HDCX20T delivers an extra-long 20-foot reach without sacrificing power quality. Built with an 18 AWG pure copper core and UL 2464-certified flame-retardant jacketing, this cable is engineered for commercial LED installations, CCTV runs, and professional AV setups where distance matters and voltage drop cannot be tolerated.
Technical Specifications
- Part Number: HDCX20T
- Connector Type: 2.1mm (ID) x 5.5mm (OD) — standard barrel connector
- Wire Gauge: 18 AWG (higher current capacity vs. standard 22AWG/24AWG)
- Cable Length: 20 feet (6.1 meters)
- Connectors: 1x Female Jack (input) + 1x Male Plug (output), molded strain relief
- Jacket: UL 2464 component rated — flame retardant, industrial grade
- Color: Black
- Conductor: Pure copper (not CCA)
Common Use Cases & Compatible Devices
- LED light strips and LED signage requiring longer cable runs (12V, 24V systems)
- CCTV and IP security cameras mounted far from power sources
- Commercial and retail display lighting across wide areas
- Audio mixing boards, recording equipment, and rack-mount gear
- Routers, modems, and networking hardware
- DVRs, NVRs, and external hard drives
- Sensors, actuators, and industrial control systems
- Marine, automotive, and RV DC power extensions
Why 18 AWG for a 20-Foot Run?
Voltage drop increases with cable length. At 20 feet, using an undersized 22AWG or 24AWG cable can cause noticeable performance issues in sensitive electronics. The HDCX20T's 18 AWG construction maintains stable voltage delivery across the full 20-foot length, making it the correct choice for longer DC power runs.
Frequently Asked Questions
Q: What is the maximum current this cable supports?
A: The 18 AWG copper conductors support up to approximately 5A at 12V for a 20-foot run. Always verify against your power supply's rated output and acceptable voltage drop.
Q: Is this cable center positive or center negative?
A: The 2.1mm x 5.5mm barrel connector passes through whatever polarity your power supply outputs. Polarity is not fixed by the cable itself.
Q: Will this work with my 12V or 24V power supply?
A: Yes. Compatible with any DC power supply using a 2.1mm x 5.5mm barrel connector, regardless of voltage (within the cable's rated current limits).
Q: How does this compare to the 12ft HDCX12T?
A: Same 18 AWG construction and UL 2464 jacket — just 8 feet longer. Choose the HDCX20T when your power supply cannot be located close to the device.
Q: Is this available for bulk or OEM orders?
A: Yes — we maintain high inventory for OEM and commercial projects. Contact us for volume pricing.
