HVAC Disconnect

[Michael J. Merino]

I am not able to identify the 2 orange conductors in the A/C disconnect box. Anybody know why they would be there? The condenser is about 10 years old.

[Michael J. Merino]

Anyone?

[sparksnmore]

Probably low voltage stat wires.

[Charley L. Bottger]

yes they would be the low voltage from the Stat to the compressor contactor and not allowed to be in the same conduit with the 220 volt in most areas

[Jeff Merritt]

Stat wires not allowed to run in conduit in IL.

[Robert Meier]

It's a common misconception that LV Class 2 conductors can be run with power conductors in the same raceway if their insulation value is rated for the highest voltage within the raceway. Looks like those are 600 volt insulated condcutors. The NEC prohibits them in the same raceway because those control wires are rated as a Class 2 circuit which must be run separately.

This installation does not fit any of the permissions listed in this (B) through (I):

2008 NEC-

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).