Article 310.

Massachusetts version of NEC Table 310.15(C)(1).
Click to Enlarge
Massachusetts version of NEC Table 310.15(C)(1).

MA amendments.

310.12. Delete the second paragraph.

310.15(C)(1). Delete the fourth itemized adjustment provision (d) covering AC and MC cable.

310.15(C)(1). Revise Table 310.15(C)(1) to read as in the image.

Informational Note: Overheating may occur where continuous, fully loaded conductor diversity is less than 50 percent and the number of current-carrying conductors exceeds nine. See 310.15(C).

Click here to see the Massachusetts amendments to the 2023 NEC®.

Did You Like This? Let Us Know With A Like! Thanks!

Article 310.

Below is a Real Question from our Electrical Continuing Education Courses for Electrical License Renewal:

Which of the following is true regarding NEC Table 310.15(C)(1) as amended in Massachusetts?

A: The adjustment factor for 20 current carrying conductors is 50%.
B: The adjustment factor for 20 current carrying conductors is 70%.
C: The adjustment factor for 10 current carrying conductors is 80%.
D: The adjustment factor for 10 current carrying conductors is 60%.
Please register or sign in for electrical continuing education courses.

If you were already signed in, your session probably expired, please sign back in.