Cat 5 Ampacity: Difference between revisions
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From Stefan H | =From Stefan H= | ||
Under the following assumptions up to 3A should be fine. | Under the following assumptions up to 3A should be fine. | ||
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Also: https://en.wikipedia.org/wiki/American_wire_gauge | Also: https://en.wikipedia.org/wiki/American_wire_gauge | ||
=Charts= | |||
*This chart suggests about 1.8A for 8 core wire - [http://www.engineeringtoolbox.com/wire-gauges-d_419.html]. Useful chart in terms of differentiating between the number of cores, but does not consider free air vs enclosed | |||
=Notes= | =Notes= | ||
Change on CEB controller: using RJ45 for power-over-cat5. That is a great standard for easy connection, as 8 leads are rated for a total of 16 amps enclosed, and 28 Amps open. So a good product ecology standard for all electrical signal/power transmission in CNC and controls applications. The relevance is the cost and easy connection in prototyping. | Change on CEB controller: using RJ45 for power-over-cat5. That is a great standard for easy connection, as 8 leads are rated for a total of 16 amps enclosed, and 28 Amps open. So a good product ecology standard for all electrical signal/power transmission in CNC and controls applications. The relevance is the cost and easy connection in prototyping. | ||
Revision as of 14:03, 10 February 2017
http://www.sumidacrossing.org/LayoutElectricity/MRRWire/WireAmpacity/ - says AWG 24 carries 3.5A open and 2A enclosed.
From Stefan H
Under the following assumptions up to 3A should be fine.
- 26AWG cat5/6 cable
- using two leads
- cable is relatively short
- normal ambient temps
- stepper control (at most use 75% of configured drive current)
Also: https://en.wikipedia.org/wiki/American_wire_gauge
Charts
- This chart suggests about 1.8A for 8 core wire - [1]. Useful chart in terms of differentiating between the number of cores, but does not consider free air vs enclosed
Notes
Change on CEB controller: using RJ45 for power-over-cat5. That is a great standard for easy connection, as 8 leads are rated for a total of 16 amps enclosed, and 28 Amps open. So a good product ecology standard for all electrical signal/power transmission in CNC and controls applications. The relevance is the cost and easy connection in prototyping.
We could potentially even consider power over cat 5 for scalable power supplies - such as 8 cat 5 wires get you to a 200A welder - which would be the first use I hear of power electronics over cat 5. I think it's worthwhile because cat 5 is ubiquitously available. Phone burial feeder cable can also be used with Cat 5 ends, no?cc
Sourcing
- Cat6, 23 gauge, 19 cents per foot, 300v rating. [2]