First just want to say I hope everyone had a great Thanksgiving. It was a quiet one for us this year.
This section has been changed and some of the requirements have been deleted. We only have to worry about raceways on roofs when they are installed less than 7/8” above the roof other wise no adjustments required. This was a concern for years about having raceways installed above roofs and the derating of the conductors in the raceway. We will only need to adjust the ampacity of a conductor when it is installed less than 7/8” above the roof. Looking at the photo below none of these conduit runs would need ampacity adjustments.
Can’t see the whole picture just click on it.
Till next time be safe work safe and don’t forget your masks your customers will appreciate it.
Jake