hhsting
Senior Member
- Location
- Glen bunie, md, us
- Occupation
- Junior plan reviewer
We are still in NEC 2014.
Attached sketch shows AC main service disconnect line side 208V three phase gets tapped to solar AC sub panel 208V three phase which has 200A main circuit breaker. The solar AC sub panel has feeder breakers which feed Enphase Q +7 aggregator which then feeds 3 Enphase IQ Series +7 microinverters. DC side of microinverter feeds solar panel.
Solar sub panel, Aggregator, IQ +7 invertor are on roof. Main service disconnect AC is inside building electric room. Their is an EGC running from solar sub panel to Aggregator, invertor then to solar panel.
The main service disconnect has system ground and from their EGC is fed to the AC solar sub panel and their is another grounding electrode in the solar AC sub panel.
My questions are following for those of you who are code expert and has experience in IQ series inverter:
1. According manufacturer Enphase IQ +7 inverters have integrated grounding and double insulation. DC circuit is isolated and insulated from ground. As a result the EGC or GEC is not required. Since EGC or GEC is not required, what methods of bonding metal parts is used from inverter to the solar panel, rack or is this not required for IQ +7?
2. Inverter is on roof so is aggregator which has fuse. If I provide single disconnecting means at aggregator per NEC 2014 Article 690.17 then would I still need to comply per NEC 2014 Article 690.15(A)(B)(C)?
3. Do I need to comply per NEC 2014 Article 690.16?
4. Solar sub panel is on roof remote from main service disconnecting means which is inside building electric room. Do I need to comply per NEC 2014 Article 690.13(A)(E)? Their is exception for 690.13(A) but not for 690.13(E) is confusing.
5. Any one know ENphase IQ +7 inverter is on roof how does it comply per rapid shutdown Nec 2014 Article 690.12? How does one initate rapid shutdown?
6. Grounding as it relates to main service disconnect and sub panel shown attached sketch is it ok code compliant?
Please ignore my ignorance I am not trying to troll here. I really appreciate all your input and consider them really helpful.
Thank you in advance.
Sent from my SM-G935U using Tapatalk
Attached sketch shows AC main service disconnect line side 208V three phase gets tapped to solar AC sub panel 208V three phase which has 200A main circuit breaker. The solar AC sub panel has feeder breakers which feed Enphase Q +7 aggregator which then feeds 3 Enphase IQ Series +7 microinverters. DC side of microinverter feeds solar panel.
Solar sub panel, Aggregator, IQ +7 invertor are on roof. Main service disconnect AC is inside building electric room. Their is an EGC running from solar sub panel to Aggregator, invertor then to solar panel.
The main service disconnect has system ground and from their EGC is fed to the AC solar sub panel and their is another grounding electrode in the solar AC sub panel.
My questions are following for those of you who are code expert and has experience in IQ series inverter:
1. According manufacturer Enphase IQ +7 inverters have integrated grounding and double insulation. DC circuit is isolated and insulated from ground. As a result the EGC or GEC is not required. Since EGC or GEC is not required, what methods of bonding metal parts is used from inverter to the solar panel, rack or is this not required for IQ +7?
2. Inverter is on roof so is aggregator which has fuse. If I provide single disconnecting means at aggregator per NEC 2014 Article 690.17 then would I still need to comply per NEC 2014 Article 690.15(A)(B)(C)?
3. Do I need to comply per NEC 2014 Article 690.16?
4. Solar sub panel is on roof remote from main service disconnecting means which is inside building electric room. Do I need to comply per NEC 2014 Article 690.13(A)(E)? Their is exception for 690.13(A) but not for 690.13(E) is confusing.
5. Any one know ENphase IQ +7 inverter is on roof how does it comply per rapid shutdown Nec 2014 Article 690.12? How does one initate rapid shutdown?
6. Grounding as it relates to main service disconnect and sub panel shown attached sketch is it ok code compliant?
Please ignore my ignorance I am not trying to troll here. I really appreciate all your input and consider them really helpful.
Thank you in advance.
Sent from my SM-G935U using Tapatalk