What is the minimum size EMT needed for a combination of six 1 AWG, eight 2 AWG, and four 1/0 AWG THW conductors?

To determine the minimum size EMT (Electrical Metallic Tubing) required for a combination of conductors, we need to calculate the total cross-sectional area of the conductors and then refer to the NEC (National Electrical Code) guidelines for conduit fill.

1. Calculate the cross-sectional area of each type of conductor:

• 1 AWG THW conductor has a cross-sectional area of approximately 0.1257 square inches.

• 2 AWG THW conductor has a cross-sectional area of approximately 0.0785 square inches.

• 1/0 AWG THW conductor has a cross-sectional area of approximately 0.1671 square inches.

2. Multiply the number of each conductor by its respective cross-sectional area:

• For six 1 AWG conductors: ( 6 \times 0.1257 ) = 0.7542 square inches.

• For eight 2 AWG conductors: ( 8 \times 0.0785 ) = 0.628 square inches.

• For four 1/0 AWG conductors: ( 4 \times 0.1671 ) = 0.6684 square