comfun1
New Member
I could not get any 4-2 wg to connect my air handler to my breaker box so I bought 4 copper and 8 copper single strand. Can I bundle these together and run them through the attic like romex or do they have to run in conduit?
Do I need conduit?
- Thread starter comfun1
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Jim Port
Electrical Contractor
Individual conductors like you bought need to be installed in a complete conduit system from the panel to the unit or junction box. You just cannot run conduit part way and slide the conductors through.
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comfun1
New Member
According to my calculations two 4's and an 8 can run in 3/4" conduit and be within the 40% fill rule. Am I right?
Jim Port
Electrical Contractor
What type of conduit?
comfun1
New Member
PVC plastic conduit
hj
Master Plumber
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My book says 1".
comfun1
New Member
There are two 4's and an 8. I looked at a chart and it said 1" for three 4's, so I calculated it for two 4's and an 8 and got 3/4". Was your chart for two 4's and an 8, or three 4's?
Jim Port
Electrical Contractor
Table C9 only allows 1 #4 in a 3/4, and 3 #4s in a 1", based on THHN
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#4 wire for an air handler?
Must be heat strips.
Just get the right cable.
Must be heat strips.
Just get the right cable.
comfun1
New Member
You're right. Heat strips it is. I have decided to run them in a 3/4" smurf pipe and see what the inspector says
Furd
Engineer
I guess that's okay as long as you don't mind doing it over. One-inch conduit is the correct size.
Jim Port
Electrical Contractor
But those red tags add a splash of color.
