24 VAC

[dougjl]

I have a question about running some control wiring. I will have an 120 VAC cable tray and a 24 VDC cable tray running between my controller and field devices. I have one field device that will require 24 VAC. Should I run this cabling in the low voltage DC tray or the 120 VAC tray? I am not sure where this voltage should sit and if the AC nature of it would adversely affect the DC wiring.

What do ya'll think?

Thanks,
Doug

 

[buzzp]

I don't know what the code says, but if the 24VAC is low power (assume so since controls) then running it in with DC will not hurt a thing. The issue with running AC with DC (at least in my opinion) is the potential for EMI problems. EMI is not a problem if it all wires in the raceway are low current carrying and are not hooked to fast switching devices.