UL 508A Frequently Asked Questions

Q. With regard to Article 409 and ampacity of conductors, which NEC table should be utilized for determining the ampacity. Can table 310.17 be used since the wire would be in a ventilated trough?

A. 409.20 provides direction on the sizing and ampacity of the conductors.

Category: Code

Keywords: article 409, ampacity, conductors, ventilated trough