CONDUIT FILL - SAME SIZE AND TYPE OF CONDUCTORS
Code rule 12-910 (5)
When dealing with a conduit fill question, first determine if you have all the same size and type of conductors, if so use the appropriate TABLE 6A - 6K. The example below will guide you through this type of conduit fill question.
- Use Tables 6A-6K when you have a question that asks for the maximum number of conductors of one size/type in trade sizes of conduit or tubing.
What is the maximum amount of # 2 AWG 600V RW90 XLPE with jacket conductors you can fit into a 129 (5’) Rigid conduit?
- The conductors are of the same size/type so we use one of the TABLES 6A-6K.
- Go to TABLES 6A-6K and find the appropriate table for the question , 600V RW90 XLPE with jacket. In this example we find that TABLE 6C is the right one to use.
- In TABLE 6C Find the size of conductor (size, AWG or kcmil, left column), which is #2 AWG in our example.
- Now move across TABLE 6C until you hit the the column of the size of conduit/tubing in the question which is 129 (5') conduit trade size.
- NOW, You have arrived at the number 50, this is the maximum number of conductors of this size and type that can fit in a 129 (5’) conduit or tubing.
~ Electrical Exam Prep Canada