RiverCityElectric
Member
- Location
- Minnesota
- Occupation
- Electrician
Hello and Thanks in advance. This is my first time posting and using this forum so I may be asking something that has been asked a thousand times. Anyway, I'm a contractor getting back into the business after a few years away. I bought Mike's comprehensive program and am trying to get re-educated.....The 2020 NEC is hoot I gotta say.
So, my question is....What do I do with this new "Emergency Disconnect" rule in 230.85? Mainly in an existing service change out? Do we bond the Neutral to the enclosure at this new "Emergency Disconnect" as well as at the newly changed out panel in the house? Bonded in two places? Rather than making it a 4 wire feeder panel? Putting it another way, let's say I have a house with an existing 100 panel which needs changing. It's a three wire from the meter to the panel. I don't need to change the "service conductors" because they are #4THHN coming into the panel now. To comply with 230.85, can I install a 100A rated Disconnect on the outside of the house, leaving the existing three wire "service conductors"? And then bond the Neutrals and grounds back together in the newly installed panel inside? Plus, bond the Neutral and the enclosure in my new "Emergency Disconnect? Or do I need to make the "Emergency Disconnect" the Service and make the panel inside a 4 wire feeder? Then what do I do with the GEC? Does that need to be relocated to the new "Emergency Disconnect"? Or, can that stay bonded to the panel inside?
Sorry for the long, drawn out post but again, thanks for the help.
So, my question is....What do I do with this new "Emergency Disconnect" rule in 230.85? Mainly in an existing service change out? Do we bond the Neutral to the enclosure at this new "Emergency Disconnect" as well as at the newly changed out panel in the house? Bonded in two places? Rather than making it a 4 wire feeder panel? Putting it another way, let's say I have a house with an existing 100 panel which needs changing. It's a three wire from the meter to the panel. I don't need to change the "service conductors" because they are #4THHN coming into the panel now. To comply with 230.85, can I install a 100A rated Disconnect on the outside of the house, leaving the existing three wire "service conductors"? And then bond the Neutrals and grounds back together in the newly installed panel inside? Plus, bond the Neutral and the enclosure in my new "Emergency Disconnect? Or do I need to make the "Emergency Disconnect" the Service and make the panel inside a 4 wire feeder? Then what do I do with the GEC? Does that need to be relocated to the new "Emergency Disconnect"? Or, can that stay bonded to the panel inside?
Sorry for the long, drawn out post but again, thanks for the help.