Doubling up neutral and ground grandfather?

[ritelec]

Hello all,
When doubling up the neutral and ground in panels years ago, it was acceptable.

Or at least I passed many inspections doing so. (70's 80's)

I was wondering why home inspectors make this neutral/ground in one hole a violation.
Wouldn't it be grandfathered in.

I received an answer that it was always a violation that the panel was listed and labeled. If so why didn't inspectors or anyone pick up on it. Did they list and say separate holes for neutrals? I don't think todays panels even say separate holes for neutrals.

Thank you

 

[Sierrasparky]

Just because it passed an inspection does not mean it was code compliant and therefore not really grandfathered.

Some panels allow two conductors under a screw. It must say so on the factory sticker though.

 

[don_resqcapt19]

I don't think a neutral in the same terminal with another neutral or with a grounding conductor was ever acceptable per the listing and the manufacturer's instructions. Part of the substantiation for the rule in 408.41 was that the installers were not following the requirements of the instructions or the listing.

 

[ritelec]

Thank you