NEC 2020 (section 230, single family) requires Emergency Disconnect on outside of structure (grandfather)

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CrazyWabbit

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On existing buildings built before NEC 2020 was adopted, what type of changes would require this need to be retrofitted, or would i be grandfathered and not required to comply?

My house was built in 2003 and i have 320 amp service. If I am changing out one of my two 200 amp (40 circuit) service panels inside the garage for a 200 amp, 80 circuit; would i have to then comply 230.85 and add an emergency disconnect???
 
So NEC doesn't provide direction for making changes to older/existing installations?
for example, i have a 240 volt outlet in my garage that plugs into new panel, existing circuit. does it now have to have ground fault protection since I'm removing and adding the circuit to a new panel? wasn't required before!
so i was thinking, perhaps i would need to bring everything up to current code fro the panel and all existing circuits connected. so add gfci to laundry circuit, etc... and perhaps not have to fix everything up stream like the requirement for a emergency disconnect...
 
The only thing in the code, to my knowledge, is if replacing a receptacle in an area that requires either GFCI or AFCI protection, then a GFCI or AFCI receptacle is required. Also, if extending a circuit more than 6' in an area that requires AFCI then you have to add the AFCI. It doesn't address anything about adding a disconnect. There may be local amendments that require it but not in the NEC. In my experience, things like the disconnect are grandfathered in.
 
Usually when you add something new, that new item needs to meet the current adopted rules. Add a 240 circuit to a garage and it probably needs to be gfci. But existing ones probably not even if you change the panel. Emergency disconnect doesnt currently exist, so you need to know what triggers that installation. Typically a service change would require that (up or down in amps). Also note that sometimes if you alter enough of something, like a room add on, the whole room may need to be brought up to code.

So the best answer is check with your AHJ what triggers the disconnect rule. The new panel will need to meet the latest panel and grounding rules.
 
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