OCPD enclosures can no longer can be mounted flat on the roof under the 2020 NEC

[tortuga]

That's one reason the NEC is not a FEDERAL LAW

myspark you state your a retired EE, in California surely your familiar with
OSHA CFR, Title 29, which includes Part 1910 Subpart S, and Part 1926 Subpart K for electrical safety no?
While there is no blanket federal law, its a little misleading to neglect to mention OSHA.
I have encountered OSHA inspectors using a copy of the NEC citing safety concerns in workplaces.
These resulted in fines of many thousands to the owners.
But we're off topic.

 

[RumRunner]

myspark you state your a retired EE, in California surely your familiar with

OSHA CFR, Title 29, which includes Part 1910 Subpart S, and Part 1926 Subpart K for electrical safety no?
While there is no blanket federal law, its a little misleading to neglect to mention OSHA.
I have encountered OSHA inspectors using a copy of the NEC citing safety concerns in workplaces.
These resulted in fines of many thousands to the owners.
But we're off topic.

Check this one out and be informed.

This is not out of topic based on the relevant responses.

Learn where the NEC is enforced. | NFPA

Discover which edition of the NFPA 70, National Electrical Code® (NEC® ) is enforced in your state.

www.nfpa.org