SER&UF in same conduit

[curt swartz]

Uh, oh. You might want to reconsider if you're talking about sprinkler-system cable.

"Southwire Sprinkler System Wire is suitable for direct burial on applications up to 30 volts"

From: https://images.homedepot-static.com/catalog/pdfImages/02/028a5a27-5b71-4482-8d8d-b4f1aa1e6738.pdf

I agree! As far as I know all manufactures of multi conductor irrigation control wire state 30 volts max. Generac controls circuits are 240 volts.

 

[tom baker]

You can (unless the controls are Class2 only) but you're saying that you're being told that it's a violation but no one knows what code section is being violated.

Question..
UF is a Chapeter 3 wiring method. Is seperation still required if its a class 2 system?

 

[Dsg319]

I believe that's what was chosen for control wires.

Would you still have to de-rate the feeder conductors? Are the control wires still considered CCC’s?

 

[electrofelon]

Question..
UF is a Chapeter 3 wiring method. Is seperation still required if its a class 2 system?

I would say no separation required, they could be in the same raceway.

725.136 Separation from Electric Light, Power, Class 1,
Non–Power-Limited Fire Alarm Circuit Conductors,
and Medium-Power Network-Powered Broadband
Communications Cables.
(A) General. Cables and conductors of Class 2 and Class 3
circuits shall not be placed in any cable, cable tray, compartment,
enclosure, manhole, outlet box, device box, raceway,
or similar fitting with conductors of electric light,
power, Class 1, non–power-limited fire alarm circuits, and
medium-power network-powered broadband communications
circuits unless permitted by 725.136(B) through (I).

I am sure there will be some debate about this.

 

[petersonra]

I would say no separation required, they could be in the same raceway.

725.136 Separation from Electric Light, Power, Class 1,
Non–Power-Limited Fire Alarm Circuit Conductors,
and Medium-Power Network-Powered Broadband
Communications Cables.
(A) General. Cables and conductors of Class 2 and Class 3
circuits shall not be placed in any cable, cable tray, compartment,
enclosure, manhole, outlet box, device box, raceway,
or similar fitting with conductors of electric light,
power, Class 1, non–power-limited fire alarm circuits, and
medium-power network-powered broadband communications
circuits unless permitted by 725.136(B) through (I).

I am sure there will be some debate about this.

I think someone mentioned the controls were 240 V. That would make them Class 1 conductors.

 

[Dsg319]

Would you still have to de-rate the feeder conductors? Are the control wires still considered CCC’s?

Disregard... done some digging.

 

[Strombea]

I think someone mentioned the controls were 240 V. That would make them Class 1 conductors.

I don't know how they determine 120 or 240 because nothing in the control system is actually using 240 volts. The wires are 120 to neutral. But maybe it's a "potential" thing. But if only one phase was there it would magically be considers 120v?
I would consider them 120v wires because you actually could have a 208v wire to neutral on a delta high leg so I'm assuming the potential to neutral is enough for classification