CAB-AC-16A-SG-AR=: Why Is This Cisco Power Cable Critical for High-Current Deployments?



​Technical Specifications and Design Features​

The ​​CAB-AC-16A-SG-AR=​​ is a ​​Cisco-certified 16A AC power cable​​ engineered for high-power networking and data center equipment. Built with ​​14AWG copper conductors​​ and a ​​grounded 3-prong plug​​, it supports ​​250V/16A power delivery​​, adhering to ​​IEC 60320 C19/C20 standards​​. The ​​heat-resistant PVC jacket​​ ensures durability in environments up to ​​70°C​​, while its ​​Singapore/Argentina (SG-AR) plug configuration​​ addresses regional power infrastructure requirements.


​Key Use Cases and Compatibility​

  • ​High-Power Cisco Devices:​​ Ideal for ​​Cisco Nexus 9500/9300 Series switches​​, ASR 9000 routers, and UCS blade servers demanding ​​16A+ power input​​.
  • ​Redundant Power Systems:​​ Integrates seamlessly with ​​dual/quad PSU setups​​ to maintain uptime during grid instability.
  • ​Global Deployments:​​ Compatible with ​​200-240V power grids​​ common in Southeast Asia and South America, provided local outlets match the plug type.

​CAB-AC-16A-SG-AR= vs. Standard Power Cables​

​Factor​ ​CAB-AC-16A-SG-AR=​ ​Generic 16A Cables​
​Cisco Validation​ Full hardware certification No vendor assurance
​Current Capacity​ Stable 16A at 250V Often derated above 12A
​Safety Compliance​ IEC/UL/CE certified Limited or regional-only

​Addressing Common User Concerns​

​Q: Can this cable support 110V power sources?​
​A:​​ While technically possible, Cisco recommends using it only with ​​200-240V systems​​ to avoid inefficiencies and potential overheating.

​Q: Is it backward-compatible with 10A Cisco devices?​
​A:​​ Yes, but ensure the device’s power supply unit (PSU) accepts a ​​C19/C20 connector​​—common in high-end chassis.

​Q: What’s the maximum cable length without voltage drop?​
​A:​​ For optimal performance, keep under ​​4 meters​​. Beyond this, voltage drop may exceed 3% at full load.


​Where to Purchase Reliable CAB-AC-16A-SG-AR= Cables​

To avoid counterfeit risks, source this cable exclusively from authorized partners like itmall.sale. Third-party alternatives often lack the ​​14AWG copper gauge​​ or fail Cisco’s rigorous EMI/RFI shielding tests.


​Lessons from Field Deployments​

The ​​CAB-AC-16A-SG-AR=​​ is non-negotiable for powering mission-critical Cisco hardware in regions with 240V infrastructure. However, its regional plug design limits flexibility—teams operating across multiple countries should stock locale-specific variants. In one project, using uncertified cables caused intermittent PSU failures in Nexus 9508 switches, costing hours of troubleshooting. Always prioritize certified cables for high-current loads; the upfront cost pales against downtime risks.

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