Different voltages in 16/4 awg wire

[oakbarn]

Is it ok to have both a 24 vdc and a 5 vdc running side by side 16/4 awg wire? The wire will run from two seperate Power supplys to terminal blocks, The 24 vdc is power for valves and the 5 vdc is used for digital inputs (floats) signal.

I tried finding the answer with a google search and found lots about mixing AC and DC but nothing about different DC voltages.

 

[doug293cz]

This is fine. Multiple voltages in a cable or wire bundle is quite common. No problem unless the currents are higher than the wire gauge is rated for, or voltages are higher than the insulation is rated for.

Brew on

 

[PCABrewing]

Is it ok to have both a 24 vdc and a 5 vdc running side by side 16/4 awg wire? The wire will run from two seperate Power supplys to terminal blocks, The 24 vdc is power for valves and the 5 vdc is used for digital inputs (floats) signal.

I tried finding the answer with a google search and found lots about mixing AC and DC but nothing about different DC voltages.

Consider using twisted-pair cable.
The digital inputs may be affected by the inductive nature of the valves.

 

[oakbarn]

I will try it an see if an issue at at all I may run a seperate wire just in case.

 

[Drinking Sensibly]

DC doesn't usually cause signal problems, AC does.

I'm not exactly sure what your use case is but possibly some ideas here...
https://forum.arduino.cc/t/data-over-power/176988

 

[day_trippr]

In fact purely DC signals run over parallel wires could likely travel an infinite distance without cross-talk.
But, if there's a switched inductive load on one of those "DC" wires, there can be voltage spikes on one that can induce noise in the other.
Generally we do indeed use twisted pairs and with some separation from pair to pair to avoid such issues...

Cheers!

 

[oakbarn]

DC doesn't usually cause signal problems, AC does.

I'm not exactly sure what your use case is but possibly some ideas here...
https://forum.arduino.cc/t/data-over-power/176988

It is a 24 vdc power to a digital output of an audrino ( through a relay) land to a digital 5 vdc input in an audrino mega