Unverified87% confidenceDecision RuleTime unknown
PoE供电场景（监控摄像头、AP面板）优先选纯铜Cat6，CCA铜包铝线电阻大发热多，长距离PoE会导致供电不足设备重启
1
Sources
87%
Confidence
Long-term
Relevance
-
First Seen
Sources
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UnverifiedPoE供电（如安防摄像头、AP面板）必须用纯铜网线，CCA线在PoE++（60W以上）下线芯发热明显，可能导致供电不稳甚至线材老化89% similarUnverified无氧铜（OFC）线芯与铜包铝（CCA）线芯：CCA电阻大、发热高、PoE供电易压降，长距离或PoE供电（如摄像头、AP）必须选纯铜78% similarUnverified线缆导体认准无氧铜（OFC）纯铜，避免CCA（铜包铝）——CCA电阻大、PoE供电发热风险高、传输距离缩水，POE供电摄像头/AP场景必须用纯铜线77% similarUnverified标称CCA（铜包铝）的取电线不建议用于逆变器等大电流场景，铜包铝载流量约为纯铜的60%，同标称线径下发热更严重，大功率务必选全铜（无氧铜OFC）72% similarUnverifiedPoE交换机比同规格非PoE贵且发热大，若供电设备（摄像头/AP）本身就在电源附近，用普通交换机+独立电源更省钱、散热更好68% similar
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