- Location
- Illinois
- Occupation
- retired electrician
The table that now appears in B.310.15(B)(2)(11) was moved there because the CMP could not define or argee to the meaning of "with load diversity".Better question would be how did the NEC justify changing the table?
Massachessetes still uses the original NEC derating table, when the NEC made the derating more restrictive MA said no, we are not doing that.
You can still find the table MA uses in the annex B of the NEC.
Take a look at Table B.31O.15(B)(2)(11) Adjustment Factors for More Than Three Current-Carrying Conductors in a Raceway or Cable with Load Diversity