hhsting
Senior Member
- Location
- Glen bunie, md, us
- Occupation
- Junior plan reviewer
Following questions can also go under Grounding and Bonding or NEC forum but wrote it here because has new AC PV disco
Attached sketch shows incoming serice conductors from utility 4#3/0 going into existing trough. The 4#3/0 service conductors get tapped to existing 100A serivce disco #1, existing 100A service disco #2 and new 150A AC PV Disco.
Their is existing #4 GEC conductor from neutral bar of Service Disco #1 to neutral bar of Service Disco #2 which then goes to cold water pipe and ground rods. With addition of new AC 150A PV Disco #6 GEC is connected to #4 GEC as shown sketch. PV Disco has main bonding jumper. Please PV disco being service disco is not the discussion here. It has main bonding jumper and under NEC 2014.
Following Questions:
1. Being PV disco I was wondering does the install need to comply with NEC 2014 Article 250.64(D)?
2. Does the grounding and bonding shown sketch comply with NEC 2014 Article 250.64(D)?
3. Does the connection of new #6 GEC from PV disco to #4 GEC need to change to comply per NEC 2014 Article 250.64(D)? If yes then how so?
4. Nec 2014 Article 250.64(D) says to comply with 250.64(D)(1), 250.64(D)(2), or 250.64(D)(3). Does word OR mean can have combination of D(1), D(2) or D(3) or just one of the three?
AHJ is under NEC 2014 please only NEC 2014 nothing else.
Attached sketch shows incoming serice conductors from utility 4#3/0 going into existing trough. The 4#3/0 service conductors get tapped to existing 100A serivce disco #1, existing 100A service disco #2 and new 150A AC PV Disco.
Their is existing #4 GEC conductor from neutral bar of Service Disco #1 to neutral bar of Service Disco #2 which then goes to cold water pipe and ground rods. With addition of new AC 150A PV Disco #6 GEC is connected to #4 GEC as shown sketch. PV Disco has main bonding jumper. Please PV disco being service disco is not the discussion here. It has main bonding jumper and under NEC 2014.
Following Questions:
1. Being PV disco I was wondering does the install need to comply with NEC 2014 Article 250.64(D)?
2. Does the grounding and bonding shown sketch comply with NEC 2014 Article 250.64(D)?
3. Does the connection of new #6 GEC from PV disco to #4 GEC need to change to comply per NEC 2014 Article 250.64(D)? If yes then how so?
4. Nec 2014 Article 250.64(D) says to comply with 250.64(D)(1), 250.64(D)(2), or 250.64(D)(3). Does word OR mean can have combination of D(1), D(2) or D(3) or just one of the three?
AHJ is under NEC 2014 please only NEC 2014 nothing else.