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Black 4 ft IEC C20 to C21 power extension cord with SJT jacket

Cable Leader

Cable Leader 4ft IEC C20 to C21 12 AWG 20A 250V Black Power Extension Cord

SKU CH-KMQQ-5BY3Z

A 4 ft heavy-duty 12 AWG extension adds reach between a C20 source and a C21 device at 20 A / 250 V

  • ColorBlack
  • Length4 ft.

Length 4ft

  • Extends C20/C21 power reach with male-to-female IEC 60320 connectors
  • Heavy-duty 12 AWG copper handles 20A at 250V for server loads
  • SJT jacket rated 105°C and 300V withstands data-center conditions
  • UL Listed and CSA certified (file E210037) with RoHS compliance
  • Black jacket enables quick circuit identification in rack environments

IEC C20 to C21 extension for rack power

This 4 ft cord adds reach between a rack PDU, UPS or server and your existing C20/C21 power cable. It uses a male C20 plug on one end and a female C21 socket on the other, so no adapter is required. The heavy duty 12 AWG construction supports 20A at 250V for server and data-centre loads. It is built for IT professionals managing rack-mounted equipment.

Thermals, noise and power draw

The SJT-jacketed 3-conductor copper cable is rated for 105C and 300V, handling continuous 20A current without overheating in normal rack environments. As a passive cable assembly it generates no audible noise and adds no active power draw to the circuit. The grounded design maintains safe operation under full load. UL and CSA certifications confirm compliance with electrical safety standards.

Bundled accessories and software impact

No software, drivers or additional accessories are included with this power extension cord. The black SJT jacket allows colour-coding of circuits and phases across the rack for easier cable management. UL Listed and CSA certified (file E210037) with RoHS compliance provides regulatory assurance for deployment. The Cable Leader lifetime warranty covers replacement if the cord ever fails.

Highlights

  • Extends C20/C21 power reach with male-to-female IEC 60320 connectors
  • Heavy-duty 12 AWG copper handles 20A at 250V for server loads
  • SJT jacket rated 105°C and 300V withstands data-center conditions
  • UL Listed and CSA certified (file E210037) with RoHS compliance
  • Black jacket enables quick circuit identification in rack environments

Specifications

ColorBlack
Length4 ft.

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Questions about this item

How do I plug the male C20 and female C21 ends into my rack PDU and server?

Insert the male C20 plug into the PDU or UPS outlet; push the female C21 socket onto the server or switch inlet until both lock with an audible click — the step people miss is verifying the latch engages on both sides.

What maintenance or replacement will this 12 AWG SJT cord need later?

No scheduled maintenance; inspect the jacket and pins during rack audits — replace the cord if the SJT insulation shows cuts, the 105C rating label becomes illegible, or the UL/CSA file E210037 marking wears off.

What limit appears first when this 20A 250V extension runs continuously at full load?

The 20A / 250V rating of the C20/C21 connectors and 12 AWG conductors is the governing limit; sustained current above 20A will trip upstream breakers before the 300V SJT jacket reaches its 105C thermal ceiling.

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