690.46 and EGC Sizing

philn

Member
Location
California
Occupation
Product Manager
Why was 690.46, which references 250.120(C), removed in NEC 2020? We've seen instances where plans are approved with #8 EGCs at the array. Are AHJs simply not enforcing 250.120(C), or do they consider EGC at the array under rooftop panels to be sufficiently protected?
 

coop3339

Senior Member
Location
NJ
I would think they consider the grounding conductors along with the string conductors under the modules protected from physical damage.
 

jaggedben

Senior Member
Location
Northern California
Occupation
Solar and Energy Storage Installer
Yay, it's gone.

I can't find any reference to why in the 2020 revision info.

Out of a couple dozen jurisdictions I've worked in, only two or three enforced it for residential rooftop arrays.
 
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