Lon-Str wrote:
Sorry I didn't make myself more clear. The reason for the 1 1/2 conduit is that I already have it. I am running 150' of 10/2 (already have it). Just wanted to know if it was ok to add another 10/2 roll in the same conduit. Thanks. Like I said, I'm a little out of my element here.
#10 at 150 foot isn't going to cut it!
You are going to see a large voltage drop of 9.6V (8%) at 30A for that distance.
Typically the max allowable drop is 3%..
#4 is going to give you 2.16% or about 2.58V drop..
Those numbers are for direct buried, conduit may give slightly different results..
You can use a voltage drop calculator to play with the numbers if you like..
VOLTAGE DROP CALCULATORParameters I used was 120V, 3% drop, 150 ft run, 30A current at end of cable.