# Power over Ethernet - 48-24v converters

**URL:** <https://forum.core-electronics.com.au/t/power-over-ethernet-48-24v-converters/3970>\
**Category:** Support\
**Created:** [20 November 2018 02:46 UTC](https://forum.core-electronics.com.au/t/power-over-ethernet-48-24v-converters/3970 "2018-11-20T02:46:50Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Warrick56575](https://avatars.discourse-cdn.com/v4/letter/w/48db29/32.png) [@Warrick56575](https://forum.core-electronics.com.au/u/Warrick56575)\
**Post date:** [20 November 2018 02:46 UTC](https://forum.core-electronics.com.au/t/power-over-ethernet-48-24v-converters/3970/1 "2018-11-20T02:46:50Z")

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Hi guys,

I’m working on a project that is automation for irrigation in a nursery.  
They have no 240v at the points where I need to place solenoids and a raspberry pi.  
I’m thinking of just using power over Ethernet and tapping the 24v (solenoids) and 5v (pi and relays) off that.  
If possible I’d like to run a 12v tap as well for led lights if the cat 6 cable can take the current.

Is there a 48v to 24v converter?

Any ideas are welcome.

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**Author:** ![Stephen](https://yyz2.discourse-cdn.com/flex028/user_avatar/forum.core-electronics.com.au/stephen/32/1599_2.png) [@Stephen](https://forum.core-electronics.com.au/u/Stephen)\
**Post date:** [20 November 2018 04:34 UTC](https://forum.core-electronics.com.au/t/power-over-ethernet-48-24v-converters/3970/2 "2018-11-20T04:34:00Z")

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Hi Warrick,

I’m concerned about how much power you can pull off PoE. I think you can only expect to pull about 1A out of a typical PoE. Here is a link to an extractor:

> **[802.3af PoE Output Data & Power Splitter - 12V 1A](https://core-electronics.com.au/802-3af-poe-output-data-power-splitter-12v-1a.html)**
>
> Power over Ethernet (PoE) splitters can make your project wiring a breeze - and best of all they work to connect any 802.3af-capable router to any Ethernet device, .. read more

You will need to use a PoE specific device because most regulators won’t handle the 48V input.

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<div class="post-metadata">

**Author:** ![Warrick56575](https://avatars.discourse-cdn.com/v4/letter/w/48db29/32.png) [@Warrick56575](https://forum.core-electronics.com.au/u/Warrick56575)\
**Post date:** [20 November 2018 04:46 UTC](https://forum.core-electronics.com.au/t/power-over-ethernet-48-24v-converters/3970/3 "2018-11-20T04:46:43Z")

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Hi Stephen, thanks for that. I’m aware of these splitters and the 5v version too. I was more wondering about the 24v conversion for the solenoids.