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Power over Ethernet (PoE) basics and beyond

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257 points voxadam | 2 comments | 16 Oct 25 14:09 UTC | HN request time: 0.001s | source
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brcmthrowaway ◴[22 Oct 25 00:43 UTC] No.45663665[source]▶
1. Why are IEC/Edison cables so thick if Ethernet can carry the equivalent power?

2. How does PoE compare to Powerline Networking?

replies(2): >>45663680 #>>45663710 #
1. otterley ◴[22 Oct 25 00:46 UTC] No.45663680[source]▶
No Ethernet cable that I’m aware of is capable of carrying anywhere near 15A of current. Even type 4 (90W assuming 57V) is 1.5A.
replies(1): >>45669183 #
2. gwbas1c ◴[22 Oct 25 13:52 UTC] No.45669183[source]▶
And don't forget that, with ethernet, every device needs its own run of cable, its own port at the router, ect, ect. Normal power cables support multiple devices.