It is the opinion of a couple of project managers in my office that the 90 degree C column can never be used. This opinion is based on previous experience with local inspectors. Reading the code, I'm not so sure about this opinion.
If the equipment, terminations, conductors and conduit are all listed and rated at 90 degree C, I don't see any issures with using the 90 degree C column for sizing my conductor amapacity.
Does anyone have any experiences (pro or con) with using the 90 degreed C column of 310.16?
If the equipment, terminations, conductors and conduit are all listed and rated at 90 degree C, I don't see any issures with using the 90 degree C column for sizing my conductor amapacity.
Does anyone have any experiences (pro or con) with using the 90 degreed C column of 310.16?