It would appear the committee is trying to stop the use of MC and Greenfield as HVAC condenser whips.
In commercial work they have long been considered unacceptable.
Yet you see them all over town, hereabouts, powering up HVAC condensers -- pad mounted -- residential.
With this rule change, Sealtite or PVC coated MC becomes required.
Since I can't point to any fire risk issues, it would appear to be a code change motivated by the NEMA players.
