Can Cat5 Cables Power Small LEDs?

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SUMMARY

This discussion centers on the feasibility of using Cat5 cables to power small LED lights through Power over Ethernet (PoE). Users confirm that while PoE can technically supply power, the current and voltage limitations of Cat5 cables may restrict their effectiveness, especially over longer distances. Specifically, powering a modest LED bulb, which can draw 10 watts (2 amps at 5 volts), may exceed the capacity of the cable. Participants suggest considering traditional power lines for more reliable illumination solutions.

PREREQUISITES
  • Understanding of Power over Ethernet (PoE) technology
  • Familiarity with Cat5 cable specifications
  • Basic knowledge of LED lighting requirements
  • Awareness of electrical current and voltage principles
NEXT STEPS
  • Research the specifications of Cat5 cables for power transmission
  • Explore PoE standards and their limitations
  • Investigate alternative wiring solutions for powering lights in remote locations
  • Learn about LED power consumption and efficiency
USEFUL FOR

This discussion is beneficial for DIY enthusiasts, electricians, and anyone interested in using Ethernet cabling for low-power lighting solutions in sheds or similar environments.

dwaring28720
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Ok so I've been trying to power a few small lights in my shed and I've read on a few sites about PoE (power over ethernet). i just wondered or has anyone had experience with it? what kind of current/voltage is the cable capable of etc I am guessing its not just as simple of wiring 2 of the 8 wires to a bulb :) and pluggin the other end to a hub.

before anyone asks why use ethernet cable ... I've got lots of it.

thanks for any and all information.
 
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No experience with ethernet power, but you can drive both incandescent as well as LED lights with the POTS phone cabling, so ethernet cabling should be fine for small lights. Illumination of a shed is a different issue, even a modest LED bulb will draw 10 watts, so 2 amps at 5 volts, not much per se but probably more than ethernet cable will handle over a longish distance such as might be required to reach your shed.
Why not just string a regular power line, they sell for a couple of dimes per foot?
 

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