Different voltages in 16/4 awg wire

Homebrew Talk - Beer, Wine, Mead, & Cider Brewing Discussion Forum

Help Support Homebrew Talk - Beer, Wine, Mead, & Cider Brewing Discussion Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

oakbarn

Supporting Member
HBT Supporter
Joined
Jun 23, 2011
Messages
2,146
Reaction score
492
Location
Bartonville
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.
 
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 :mug:
 
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.
 
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!
 
Back
Top