I've read the NEC requirement to reduce the ampacity of a NM (i.e. romex) electrical cable when encased in spray foam insulation (because a NM wire heating up due to a significant current draw cannot dissipate the genereated heat quickly enough due to the spray foam insulation, and it may cause a short or a fire).
But I'm not clear on whether the requirement for ampacity reduction is the same for Type AC cable. Can anyone clarify what the code says?
Thanks
Theodore2.
But I'm not clear on whether the requirement for ampacity reduction is the same for Type AC cable. Can anyone clarify what the code says?
Thanks
Theodore2.