Help with Low volt A/C wiring outside

[hazmat]

OK stupid question, but I need some details on how to wire the 24V control lines between house & outside condensor unit.

The unit only has one knockout on it for the "liquid tight" conduit. I know I shouldn't run the 24V with the 220V power lines. I looked quick at my parent's house - didn't see the 24V lines outside the conduit, so I guessed that they are inside it (which doesn't seem right).

A search on google this morning indicates that the 24V lines are run alongside the refridgerant line tucked under the insulation. Is this right? The low volt doesn't need to be run in conduit? There is a "port" on the unit with a weather grommet that looks perfect for inserting the 24V control lines into.

Just wanted to be sure I'm doing it right. I guess I should snoop around the neighborhood a bit...

News flash, peeping tom arrested swears innocence - "I was just trying to figure out how to wire my A/C"

 

[PineRidge]

Codes vary from area to area but we used to tuck the low voltage wires in loom then tape it to the suction line. The grommet at the condenser will indeed accept the loom.

Don't run the low voltage in the liquid tight with the 220, that's an accident looking for a place to happen.

 

[Birdhunter1]

we just run it open to the atmosphere and zip-tied it to the refrigerant lines and then run it through the grommet into the control box.
If it's just an a/c unit (not heat pump) you need an 18-2 wire, wire one wire to each side of the contactor (doesn't matter which wire to which side) and you should be good to go.

 

[hazmat]

Thanks guys! Too bad I won't be done before Wednesday - supposed to be 98 deg + humid (I'm sure the Texan's think that is cool, but we yankees freak out when it is hotter than 95).